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=General Embryolog1Cal Information Service=

1949 (first issue)

GENERAL ISSUE OF THE HUBRECHT LABORATORY

Annual Issue ot the Hubrecht Laboratory

seat ot trie .Institut International d Embryologie

(Embryological section of the l.U.B.S.)

published with financial supports of the International Union of Biological Sciences and the Organization of Pure Scientific Research

(Z.W.O.) in the Netherlands.


==Contents==

a) Introduction p. 5.

b) General list of names and addresses p. 8. (alpabetical order)

c) General list of institutes with composition of scientific staffs p. 37. (geographical order)

d) General list of names with subjects of work in preparation p. 61. (alpabetical order)

e) General list of subjects with names of investigators . p. 111. (arranged according to organ system and systematic groups)

Classification into subjects p.

Descriptive embryology p.

Comparative embryology p.

Experimental developmental morphology p.

Experimental developmental physiology p.

Experimental embryology; development and genetics . . p.

Experimental embryology; development and pathology . . p.

Regeneration P Metamorphosis P


f) Short notes and references to new technical methods ... p.

g) General questions and announcements P


h) Communications of the "Institut International d'Embryo logie" (Embryological section of the I.U.B.S.) P List of members of the "Institut International d'Embryologie" p.



==Introduction==

The foundation of a GENERAL EMBRYOLOGICAL INFORM TION SERVICE was an experiment on a large scale. Success or failure depended not on the activity of one institute alone, but on the general interest, goodwill and active cooperation of all embryologists the world over.

Surveying the progress of our common project at the end of its first year, we can say that it has achieved a real success. In our first issue one can find data on the current investigations of more than 550 workers in the field of Embryology.

The great interest shown in this undertaking must be based on a general desire for better international contact and cooperation with colleagues all over the world. We have had enthusiastic letters from many correspondents. This general establishment of contact may be of very great importance for the progress of Science especially in more isolated countries. The fact that the Hubrecht Laboratory has helped in the fulfilment of such a widespread need is a real pleasure to us. We will not conceal however that this first attempt has not yet achieved complete success. Not every embryologist was reached, since many addresses were unknown to us. With the help of our colleagues we tried to supplement our list of addresses, which indeed grew very quickly in the course of this year. In the second place, we have not yet received information from every institute to which our circulars were sent. We could not, indeed, expect a direct collaboration of every institute in this first year, as the significance of our project may not have appeared immediately to everybody. Propaganda remains, indeed, important 1 )We expect, however, a much better understanding of our enterprise after we have distributed this first issue of the G.E.I.S., in which unfortunately a few institutes must still be marked ,,data not yet received". We hope and expect that we can offer you a complete survey of current embryological work in the issue for the year 1950.

The development of the rather extensive organisation has taken more time than we had hoped when we started this project in the spring of last year. As our list of addresses grew only gradually, circulars could not be sent to many institutes before the summer of this year, so that their data did not arrive until the beginning of the autumn. We cannot therefore offer you this first issue before the beginning of 1950. We hope, however, that the organisation will run more smoothly in its second year. We will try to send you the second issue in the last quarter of 1950.

1 ) The list of cooperating European institutes is more complete than that of Amci institutes. This difference finds its explanation in the tact that we have been to discuss the plans of the Hubrecht Laboratory in personal conversation Bt at\ international and national congresses in Europe. Persona! contact and relationenormously this international work. The number of personal contact-; with Amc; embryologists is, however, still small. We therefore hope that wt will be able lo extend our relations with American colleagues in the near future in order to make our work, which is in the interest o/ all embryologists. more familiar to them.


I will briefly discuss the arangement of chapters b — e and the contents of chapters f — h.

Chapter b gives the alphabetical list of names with addresses. The present collaborators of the G.E.I. S. have been marked with *.

Chapter c contains the list of institutes and has been arranged according to a geographical order, which forms the best supplement to the alphabetical list of chapter b. The institutes have been grouped according to continent, country, district, town and street. Within each of these groups we use an alphabetic arrangement.

Members of the staff have been placed in the left column, embryologists not belonging to the staff in the right column. Three groups of institutes can be distinguished:

a. Those institutes which are mainly concerned with embryology or which have a separate embryological department with a rather extensive staff of embryological workers.

b. Those institutes, in which only a small number of embryologists are working (individual workers).

c. Those institutes, from which we have not yet received information. They are included in order to give as complete a survey as possible of all embryological Institutes. They have been marked "data not yet received".

The size of this issue compelled us to restrict the data concerning the composition of staffs to the embryological workers and directors only.

In chapter d you will find the names of embryologists and the subjects on which they are working. This chapter has given us some trouble especially in those cases, in which forms have not been filled in completely.

The indices at the end of each subject refer to the arrangement in the next chapter.

Chapter e with the classification of data according to subjects has, however, given the greatest trouble, again especially when forms have not been filled in completely 1 ), or when investigations deal with more than one of the main groups distinguished in our general classification. Sometimes it was necessary to divide a subject into two separate ones, and in a few cases it was even impossible to classify an investigation in the right place. We, therefore, urgently request every collaborator to give us complete data!

The order of classification into subjects is of course a more or less arbitrary one. We have tried to develop the most practical system. We classified the investigations according to general group, general subject, special subject and only finally according to systematic group. The arrangement according to subject could be followed out completely in the case of special investigations, but was soon exhausted in the case of general investigations, so that here we soon fell back upon the systematic order (cf. the general rubrics I. 2, II. 2, Ilia. 2 and Illb. 2). This was also the case with investigations on Invertebrates, as the classification into subjects used here, holds good mainly for Vertebrates. Therefore, the systematic arrangement was directly applied within the general subjects for investigations on Invertebrates.


1 ) Incomplete data give rise to wrong classifications and can be classified in main groups only.


The names of cooperating embryologists have been arranged alphabetically.

The enormous variety of subjects did not allow any entirely consistent and adequate classification, so that in several cases an investigation could have been classified under more than one heading. In order to avoid an enormous extention of this issue we tried to classify every investigation under one heading only, which, however, often required a Solomon's judgment. We have, therefore, added supplementary indices, placed behind the corresponding line, which refer to other headings under which the investigation in question can also be placed. The indices before the corresponding line refer to the systematic group.

In the above mentioned chapters b — e we have not translated the text received in order to avoid any change in its character. For the same reason any correction of the text has been restricted as much as possible.

We hope that chapter f will develop into a section in which every embryologist will record new practical technical methods or his own experiences with new technics; in general, data which would not be published otherwise, or which are in danger of being neglected. These annotations can be inserted in the form of references to little known publications, or in the form of very short notes, in which only the essential data are given. The examples may further demonstrate the intended contents of this section.

Chapter g will discuss general questions and projects, which are o5 importance and interest to every embryologist. (Cf. the project of the Central Embryological Library at the Hubrecht Laboratory, and that of the Normal Table of Xenopus laevis).

Chapter h will finally be destined for communications from the "Institut International d'Embryologie".


==General List of Names and Addresses==

(alphabetical order)

ABELOOS, M. Prof. — Lab. de Zool. gen. de la Fac. des Sci. et
Stat, de marine d'Endoume (Marseille), Place Victor Hugo,

Marseille, France.

ABERCROMBIE, M. M.A., B.Sc. — Dep. of Embryol., Univ. Coll.
London, Gower Str., London W.C. 1, England. ADAMS, Miss A. E. Dr, Prof. — Mount Holyoke Coll., S. Hadley,

Mass., U.S.A. ADELMANN, H. B. Dr, Prof. — Dep. of Zool., Cornell Univ.,

Ithaca, N.Y., U.S.A.

AGARWALA, D. — Queen Mary Coll., Univ. of London, Mile
End Rd, London E. 1, England.

ALDEN, R. H. Ph.D., Prof. — Univ. of Tennessee, Coll. of Med.,
Memphis 3, Tenn., U.S.A.

ALOISI, Signorina G. Ph.D. — 1st. di Anat. comp., Via Belmeloro
8, Bologna, Italia. ♦ALTSCHUL, R. M.D., Prof. — Dep. of Anat., Univ. of Saskatchewan, Saskatoon, Canada.

ALVARES GUTIERREZ, Miss. J. B.S. — Dep. de Histol. y Em
briol., Fac. de Med., Montevideo, Uruguay, S. America. 'AMOROSO, E. C. Prof. — Dep. of Embryol., Univ. Coll., Gower

Str., London W.C. 1, England.

AMPRINO, R. M. Prof. — Inst, of human Anat., Corso Massimo
d'Azeglio 52, Torino, Italy. ANCEL, P. Dr, Prof. — Boulevard de Sevastopol 102, Paris, France.

ANDERS, G. Dr Phil. — Zool.-vergl. Anat. Inst, der Univ., Kiinst
lergasse 16, Zurich 6, Schweiz.

'ANDERSON, Miss I. L. B.A., M.A. — Dep. of Biol., Brown Univ., Providence, R.I., U.S.A.

'ANDRES, G. Dr Phil. — Zool. Inst, der Univ., Abt. f. Zoophysiol., Sahlistr. 8, Bern, Schweiz.

'ANNEZ, Ch. — Anat. Inst, der Rijks Univ., Bylokekaai 1, Gent, Belgie.

AREY, L. B. Dr, Prof. — Dep. of Anat., Med. School, North Western Univ., 303, East Chicago Ave, Chicago, 111., U.S.A.
'ARIENS KAPPERS, J. M.D., Prof. — Anat.-Embryol. Lab. der Rijks Univ., Oostersingel 69, Groningen, Holland.

'ARMSTRONG, P. B. B.S., M.D., Prof. — Coll. of Med., Syracuse 10, N.Y., U.S.A.

'ASSENMACHER, I. — Inst. d'Embryol. et de Morphol. exper., Fac. de Med., 97, Allee de la Robertsau, Strasbourg (Bas-Rhin), France.

ATLAS. M. Ph.D., Prof. — Dep. of Biol. Yeshiva Univ., 186th
Str. and Amsterdam Ave, New York 33, N.Y., U.S.A.

AUER, J. M.D., D.M.Sc, Prof. — Dep. of Anat, Fac. of Med.,
Llniv. of Ottawa. Ottawa, Canada. 'AUSTOKER, Mrs J. B.Sc. Hon. — Dep. of Zool., Univ. of the Witwatersrand, Milner Park, Johannesburg, South Africa.

AVEL, M. Dr, Prof. — Lab. d'Anat. comp., Fac. des Sci., 12, Rue

Auguste Conat, Bordeaux, France.

AVIS, F. Prof. — Roscoe B. Jackson Memorial Lab., Box 558, Bar
Harbor, Me, U.S.A.

BACKSTRCM, S. A. A. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, Stockholm, Sweden. BACON, R. L. Prof. — Dep. of Anat., Stanford Univ., Palo Alto,

Cal., U.S.A. •BAERENDS, G. P. Dr, Prof. — Zool. Lab. der Rijks Univ., Reite makersrijge, Groningen, Holland. •BAFFONI, G. Dr — 1st. di Zool., Univ., di Stato, Viale S. Bar tolomeo, Cagliari, Sardegna, Italia. BAKER, H. B. Dr. Prof. — Zool. Lab., Univ. of Pennsylvania,

Philadelphia 4, Pa, U.S.A. •BAKER, R. C. B.A., M.Sc, Ph.D., Prof. — Dep. of Anat., Ohio

State Univ., Columbus 10, Ohio, U.S.A. •BALINSKY, B. I. Dr of Biol, and Sc. — Dep. of Zool., Univ. of the

Witwatersrand, Milner Park, Johannesburg, South Africa. BALTZER, F. Dr, Prof. — Zool. lust., Muldenstr. 8, Bern, Switzerland.

BANGMA, P. — Anat.-Embryol. Lab. der Rijks Univ., Oostersingel
69, Groningen, Holland.

BARBASETTI, M. A. Ph.D., B.Sc. — 1st. di Anat. comp., Via Bel
meloro 8, Bologna, Italia. •BARENTS, J. W. M.Dr — Anat.-Embryol. Lab. der Rijks Univ.,

Janskerkhof 3, Utrecht, Holland.

BARIGOZZI, CI. Dr.Sc, Prof. — 1st. di Genet., Via Celoria 10.
Univ. di Milano, Milano, Italia.

BARKA, T. — Anat. and Biol. Inst, of the Med. Fac. of the Univ..
Debrecen, Hungary. BARTELMEZ, G. W. Dr, Prof. — Hull Anat. Lab., Univ. of Chicago, Chicago 37, 111, U.S.A. BARTH, L. G. Dr, Prof. — Dep. of Zool., Columbia Univ., New York 27 (City), N.Y., U.S.A.

BAST, T. H. Ph.D., Prof. — Dep. of Anat.. Univ. of Wisconsin,
Madison, Wis., U.S.A. •BATTAGLIA, B. D.Sc. — 1st. di Genet., Via Mezzocannone 8, Napoli, Italia.

BATTY, Th. A.B. — Med. Anat., Univ.. of Kansas, Lawrence,
Kan.. U.S.A. 

BAUMANN, J. A. Dr, Prof. — Inst. d'Anat., 20, R. ficole de Med., Geneve, Suisse.

BAX, W. A. Dr — Anat.-Embryol. Lab. der Rijks Univ., Boer
haavekwartier, Wassenaarseweg. Leiden, Holland. •BAXTER, E. W. B.Sc. - Biol. Dep., Guy's Hosp., Med. School.

London, S.E. 1, England. 

BEAN, Mrs E. S. Dr, Prof. — Dahlhousie Univ., 28, Chestnut Str..

St. Halifax, Nova Scotia, U.S.A. 

BEATTY, R. A. M.A. — Genet. Lab., Anim. Breeding, and Genet.

Res. Organ.. Inst, of Anim. Genet., West Mains Rd, King's Buildings, Edinburgh 9, U.K.


BECCARI, N. Dr, Prof. — 1st. di Anat. comp., Via Romana 17,

Firenze, Italia.

BEER, G. R. de F.R.S., P.L.S.; M.A., D.Sc, Prof. — Dep. of Embryol..
Univ. Coll. London, Gower Str., London W.C. 1, England.

BfiLANGER, L. F. B.A., M.D., M.A., Prof. — Dep. of Histol. and
Embryol., School of Med., Univ. of Ottawa, Ottawa, Canada.

BELLAIRS, A. d'A. M.A., M.Sc., M.R.C.S. — Anat. Dep.. London
Hosp. Med. Coll., (Univ. of London), Turner Str., London,

E. 1, England.

BENAZZI, M. Prof. — 1st. di Zool. e Anat. comp. dell'Univ., Via
A. Volta 4, Pisa, Italia.

BENAZZI-LENTATI, Signora G. lib. doc. — 1st. di Zool. e Anat.
comp. dell'Univ., Via A. Volta 4, Pisa, Italia.

BENOIT, J. Dr en Med., Dr es Sc, Prof. — Inst. d'Embryol. et
de Morphol. exper., Fac. de Med., 97, Allee de la Robertsau,

Strasbourg (Bas-Rhin), France.

BER, A. Dr, Prof. — Dep. of Endocr., Fac. of Med., Univ. of Lodz,
Lodz, Nowotki 137, Poland.

BEREK, L. M.D. — Szegedi Tudomanyegyetem Bonctani, Szovet-es
Fejlodestani Intezete, (Inst, of Anat., Hist, and Embr.), Szeged,

Hungary.

BERG, W. E. A.B., M.S., Ph.D., Prof. — Dep. of Zool., Univ. of
California, Berkeley 4, Cal., U.S.A.

BERGERARD, Madame Yv. Agreg. Sc. Nat. — Lab. de Biol, du
P.C.B., Univ. de Paris, 12, Rue Cuvier, Paris (5), France. BERRILL, N. J. Prof. — Dep. of Zool., Mc Gill Univ., Montreal,

Quebec, Canada.

BEZEM, J. }. Ir — Zool. Lab. der Rijks Univ., Janskerkhof 3,
Utrecht, Holland.

BIJTEL, Mej. J. H. Dr of Sc. — Anat. Embryol. Lab. der Rijks
Univ., Oostersingel 69, Groningen, Holland.

BISS, Frau R. — Zool. Inst, der Univ., Abt. f. Zoophysiol., Sahlistr.
8, Bern, Schweiz. BLACHER, L. J. Dr, Prof. — (Address unknown) U.S.S.R.

BLOUNT, R. F. B.S., M.S., Ph.D., Prof. — Dep. of Anat., Med.
Branch, Univ. of Texas, Galveston, Tex., U.S.A. BLUNTSCHLI, H. Dr. Prof. — Anat. Inst., Bern, Schweiz.

BOD, Alex. — Anat.-Embryol. Inst., Med. Fac, Targu-Mures,
Marosvasarhely, Romania.

BOEKE, J. Dr, Prof. — Ramstr. 47, Utrecht, Holland.
BOELL, E. J. B.A., Ph.D., Prof. — Osborn Zool. Lab., Yale Univ.,
New Haven, Conn., U.S.A. ♦BOISSELOT, Mile J. Lie. es Sc. — Lab. d'Embryol., Fac. de Med.,

15, Rue ficole de Med., Paris Vie, France.

BONDE, C. von M.A., Ph.D., B.Sc. — Div. of Fisheries, Beach Rd,
Sea Point, South Africa. ♦BONfi, E. — Lab. d'Embryol., Fac. des Sci., 71, Rue de Namur,

Louvain, Belgique.

BONIN. W. B.A., M.D., Prof. — Dep. d'Histol. et d'Embryol..
Univ. de Montreal, 2900, Boulevard du Mont-Royal, Montreal,

Canada.






Bonn 11 Burn

BONNEVIE, Frau Kr. Dr, Prof. — Zool. Lab. der Univ., Oslo,

Norwegen.

BOOKHOUT. C. G. A.B.. M.A.. Ph.D., Prof. Dep. of Zool.,
Duke Univ., Durham, N.C.. U.S.A.

BOREI, H. Ph.Dr — Wenner-Grens Inst, for exper. Biol., Stockholm, Norrtullsgatan 16, Sweden.
BOTERENBROOD, Mej. E. — Hubrecht Lab., Embryol. Inst.,
Janskerkhof 2, Utrecht, Holland. BOUIN, P. Dr, Prof. — Vendresse, Ardennes, France.

BOUMAN, Mej. M. — Hubrecht Lab., Embryol. Inst., Janskerkhof 2,
Utrecht, Holland. BOUNOURE, L. Dr. Prof. — Univ. de Strasbourg. Strasbourg,

France.

BOUR, J. W. H. — Anat.-Embryol. Lab. der Rijks Univ., Boerhaave
kwartier, Wassenaarseweg, Leiden, Holland.

BOYD, J. D. M.A.. M.Sc, M.D., Prof. — Anat. Dep., London Hosp.
Med. Coll., Univ. of London, Turner Str., London E. 1, England.

BOYDEN, E. A. Ph.D., Med.Sc. Prof. — Inst, of Anat., School of
Med., Univ. of Minnesota, Minneapolis 14, Minn., U.S.A.

BOYER, Ch. C. B.S., M.A., Ph.D.. Prof. — Med. Coll. of Alabama,
Birmingham 5, Ala., U.S.A.

BRACHET, J. L. A. M.D. — Lab. de Morphol. anim., Fac. des Sci.,
Univ. libre. 1850, Chaussee de Wavre, Bruxelles, Ouderghem.

Belgique. BRETSCHER, A. Dr Sc. — Griineckweg 14, Bern, Schweiz. 'BRETSCHNEIDER, L. H. — Zool. Lab. der Rijks Univ., Janskerkhof 3, Utrecht, Holland.

BRIEN, P. Dr, Prof. — Lab. de Zool., Inst. Zool. Torney-Rousseau,
Univ. libre de Bruxelles, 51, Av. F. D. Roosevelt. Bruxellest

Belgique.

BRINI, A. Dr en med. — Lab. d'Embryol. et Teratol. exper. de
l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12, Rue

de l'Univ., Strasbourg, France.

BROERS, C. J. Biol. drs. — Anat.-Embryol. Lab. der Rijks Univ.,
Janskerkhof 3. Utrecht, Holland. ♦BR0NDSTED, H. V. Dr Phil., Prof. — Inst, for Aim. Zool.. Uni versitetsparken 3, Copenhagen, 0, Denmark.

BRUNETTI, G. M. — 1st. Anat. umana, Corso M. d'Azeglio 52,
Torino, Italia. BUCCIANTE, L. Prof. — 1st. d'Istol., Univ. di Padova, Via A.

Gabelli, Padova, Italia. •BUCHER, N. — Zool.-vergl. Anat. Institut der Univ.. Zurich,

Schweiz.

BUCHTOWNA, Miss A. M.Sc. — Zaktad Anat. Porownawczej
Instytut Zool. Uniwersytetu, Ul. Sienkiewicza 21. Wroclaw,

Poland.

BUNO, W. B.S., M.D., Prof. — Dep. de Histol. y Embriol.. Fac. de
Med., Montevideo, Uruguay. S. America. •BURNS. R. K. B.S., Ph.D., Prof. — Dep. of Embryol., Carnegie Inst.

of Washington, Wolfe and Madison Strs, Baltimore 5, Md.

U.S.A.


BURR, H. S. Dr, Prof. — Sterling Hall of Med., Yale Univ., 333, Cedar Str., New Haven 11, Conn., U.S.A.

BUTLER, E. G. Dr, Prof. — Dep. of Biol., Princeton Univ., Princeton, N.J., U.S.A.
CAIRNS, J. M. Ph.D., Prof. — Dep. of Zool., Coll. of Arts and
Sci., Univ. of Texas, Austin 12, Tex., U.S.A. CAMBAR, R. Dr — Lab. d'Anat. comp., Fac. des Sci., 12, Rue Auguste Conat, Bordeaux, France.

CAMPENHOUT, E. van Dr, Prof. — Inst. d'Anat., Univ. de Louvain, 38, Rue des Recollets, Louvain, Belgique.
'CARTER, T. M.A. — Inst, of Anim. Genet., West Mains Rd, King's Buildings, Edinburgh 9, U.K.

'CASE, J. F. Prof. — Dep. of Biol., The John Hopkins Univ., Charles and 34th Strs, Baltimore, Md, U.S.A.

'CASPARI, E. Ph.D., Prof. — Dep. of Genet., Carnegie Inst, of

Washington, Cold Spring Harbor, New York, L.I., N.Y., U.S.A.

CASPERSSON, T. Dr, Prof. — Inst, for Cell Research, Karolinska

Inst., Stockholm, Sweden. CASTIGLIONI, M. C. — 1st. di Genet., Via Celoria 10, Univ. di Milano, Milano, Italia.

CATE, G. ten — Anat.-Embryol. Lab. der Rijks Univ., Mauritskade
61, Amsterdam-O., Holland.

CEI, J. M. Dr Ci. Biol. — Inst, de Zool., Univ. Nac. de Tucuman,
Miguel Lillo 205, Tucuman, Argentien, S. America.

'CELESTINO da COSTA, A. Dr hon. causa: Bordeaux 1923, Toulouse 1929, Prof. — Inst, de Histol. e Embriol., Fac. de Med., Lisboa, Portugal. CHAMBERS, R. Dr, Prof. (Emer.)

a. Marine Biol. Lab., Woods Hole, Mass., U.S.A.

b. Washington Square Coll., New York Univ., Washington Square, New York 3, N.Y., U.S.A.

'CHAMBERS, W. W. B.S., Ph.D., Prof. — Dep. of Anat., School

of Med., Univ. of Pennsylvania, Philadelphia 4, Pa., U.S.A. 'CHANDLER, S. B. A.B., A.M., M.D., Prof. — School of Med.,

West Virginia Univ., Morgantown, W. Va., U.S.A. 'CHANG, C. Y. M.S., Prof. — State Univ. of Iowa, Iowa City,

Iowa, U.S.A. 'CHANMUGAN, P. K. M.Sc, M.R.C.S., L.R.C.P., L.M.S. — Dep.

of Anat., Fac. of Med. (Univ. of Ceylon), Kynsey Rd,

Colombo 8, Ceylon. 'CHASE, H. B. Ph.D.. Prof. — Brown Univ., Providence 12, R.I.,

U.S.A. CHASE, S. W. Dr, Prof. — Western Reserve Univ., 2109, Adel bert Rd, Cleveland, Ohio, U.S.A. 'CHATTERJEE, H. Prof. — Lab. d'Embryol., Fac. de Med., 15,

Rue £cole de Med., Paris Vic, France. CHENEY, R. H. Dr, Prof. — Dep. of Biol., Brooklyn Coll., Bedford

Ave and Ave H., Brooklyn 10, N.Y., U.S.A. 'CHUANG HSIAO-HUI Dr, Prof. — Dep. of Zool., Coll. of Sci.,

Nat. Univ. of Peking, Ching Shan Tung Chieh, Peiping, China,

Asia.



CIGADA, M. Grad. stud. — 1st. di Zool. e Anat. comp., Fac. di
Sci., Via Celoria 10, Milano, Italia.

CITTERIO, P. Grad. stud. — 1st. di Zool. e Anat. comp., Fac. di
Sci., Via Celoria 10, Milano, Italia.

CLANCY, W. Prof. — Biol. Dep., Univ. of Oregon, Eugene, Ore.,
U.S.A. ♦CLAES, M.T. — Lab. d'Embryol., Fac. des Sci., 71, Rue de Namur,

Louvain, Belgique.

CLARK, E. R. A.B., M.D.. Sc.D., Prof. — Dep. of Anat., School of
Med., Univ. of Pennsylvania, Philadelphia 4, Pa, U.S.A. 'CLARK, H. B.A., Ph.D., Prof. — Dep. of Zool., Univ. of Connecticut, Storrs, Conn., U.S.A. CLARK. L. B. Dr, Prof. — Dep. of Biol., Union Coll.. Schenectady,

N.Y., U.S.A. CLARK, S. L. Dr, Prof. — Dep. of Anat., Vanderbilt University.

Nashville, Tenn., U.S.A.

CLAVERT, J. Dr en Med., Dr es Sc. Prof. — Inst. d'Embryol. et
de Morph. exper., Fac. de Med., 97, Allee de la Robertsau, Strasbourg (Bas-Rhin), France. CLEAVE, H. J. van. Dr, Prof. — 318. Natural History Building,

Univ. of Illinois, Urbana, 111., U.S.A. CLEMENT, A. C. Dr, Prof. — Dep. of Biol., Coll. of Charleston, Charleston 10, S.C., U.S.A.

CODDENS, J. G. Med. Dr — Histol. Lab.. Wassenaarseweg,
Leiden, Holland. ♦COHEN. STANLEY. Ph.D., Prof. — Lab. of chem. Embr., Colorado Univ., Med. Center, Denver 7, Col., U.S.A. ♦COLOMBO, G. Dr — 1st. di Zool. e Anat. comp., Via Loredan 6,

Padova, Italia. ♦COLWIN, A. L. Ph.D., Prof. — Dep. of Biol., Queens Coll.,

Pushing, L.I., New York, N.Y., U.S.A. ♦COLWIN, Miss L. H. Ph.D., Prof. — Dep. of Biol., Queens Coll., Pushing, L.I., New York, N.Y., U.S.A. COMANDON, J. Dr, Prof. — Lab. de Bellevue, Centre Nat. de la

R?rherche Sci., 1, Place Arist. Briand, Bellevue, France. CONKLTN. E. G. Dr, Prof. (Emer.) — Princeton Univ., Princeton,

NT. U.S.A.

♦O'CONNOR. R. J. M.D. — Westminster Med. School, Horsferry

Rd London, S.W. 1, England.

COPENHAVER. W. M. Dr. Prof. — Coll. of Phys. and Surg.,

Columbia Univ., 632, West 168th Str., New York City, U.S.A.

♦CORD 7 " 1 "* R. Prof. — Med. Anat., Univ. of Kansas, Lawwrence,

Kan., U.S.A. ♦CORNF^ G. W. D.Sc, A.B.. M.D., Prof. — Dep. of Embryol., Carnegie Inst, of Washington, Wolfe and Madison Strs, ^it'more 5, Md. U.S.A. ♦COSTELLO. D. P. Ph.D.. Prof. — Dep. of Zool., Univ. of North

Carolina. Chapel Hill, N.C.. U.S.A. ♦COTRONEI. G. Dott.. Prof. — 1st. di Anat. comp., Via Borelli 50,

Poma, Italia. ♦CROMPTON, A. W. M.Sc. — Sool. Inst., Stellenbosch, Suid Afrika.

CZAPIK, A. Mag. of Sc. — Zool. Dep. of the Jagellonian Univ.,
St. Anne 6, Krakow, Poland. CZEKANOVSKAJA, O. Dr — Embryol. Lab., Inst, of exper. Med..

Leningrad, U.S.S.R.

DAGG. Ch. P. A.B., Prof. - - Dep. of Zool., Univ. of Calif., Los
Angeles 24, Cal., U.S.A.

DALCQ, A. M. M.D., Prof. — Inst. d'Anat., 97, Rue aux Laines,
Bruxelles, Belgique. 'DALES, R. P. B.Sc. — Queen Mary Coll., Univ. of London, Mile

End Rd, London, E. 1, England. 'DALTON, H. G. Ph.D., Prof. — Dep. of Genet., Carnegie Inst, of

Washington, Cold Spring Harbor, L.I., New York, N.Y., U.S.A.

DAM, L. van. Dr — Anat. -Embryol. Lab., Oostersingel 69, Gro
ningen, Holland.

DAMAS, H. F. C. D.Sc. — Dep. Morphol. des Chordes, Inst. Zool.
Ed. v. Beneden, Quai Ed. v. Beneden 22, Liege, Belgique.

D'ANCONA, U. Prof. — 1st. di Zool. e Anat. comp., Fac. di Sci.,
Via Loredan 6, Padova, Italia.

DANIELLI, Dr — Kristinebergs Zool. Stat., Fiskebackskill, Sweden.
♦DANKMEYER, J. Dr, Prof. — Anat.-Embryol. Lab. der Rijks Univ.,

Boerhaavekwartier, Wassenaarseweg, Leiden, Holland.

DATKOWNA, H. Dr — Inst. comp. Anat., Anny 6, Krakow, Polska.
DA VIES, D. H. M.Sc. — Div. of Fisheries, Beach Rd, Sea Point,
South Africa.

DEKKER, Mej. A. — Anat.-Embryol. Lab. der Rijks Univ., Boerhaavekwartier, Wassenaarseweg, Leiden, Holland.
DELANNEY, L. E. Dr, Prof. — Dep. of Biol., Univ. of Notre Dame,

Notre Dame, Ind., U.S.A.

DELSOL, M. Lic.es Sc. — Lab. de Biol, anim., (P.C.B. Section II),
Fac. des Sci., Univ. de Paris, 12, Rue Cuvier, Paris V«, France. 'DESCLAUX, P. — Lab. d'Embryol., Fac. de Med., 15, Rue ficole de

Med., Paris Vic, France.

DETH, J. H. M. G. van M.Dr — Anat.-Embryol. Lab. der Rijks
Univ., Janskerkhof 3, Utrecht, Holland. DETWILER, S. R. Dr, Prof. — Dep. of Anat., Coll. of Phys. and

Surg., Columbia Univ., 630, West 168th St, New York City 32,

N.Y., U.S.A.

DEUCHAR, E. M. B.A. — Inst, of Anim. Genet., West Mains Rd,
Edinburgh 9, U.K. DEVILLERS, Ch. Dr — Lab. d'Embryol., Coll. de France, Place

Marcelin Berthelot, Paris Ve, France.

DIDING, S. — Lunds Univ. Zool. Inst., Lund, Sweden.
DIETZ, D. Prof. — Roscoe B. Jackson Memorial Lab., Box 558,
Bar Harbor, Me, U.S.A.

DODDS, G. S. B.A., M.A., Ph.D., Prof. — School of Med., West
Virginia Univ., Morgantown, W. Va, U.S.A. HOLLANDER, A. Dr — Lab. d'Anat. et d'Histol., Dep. d'Embryol..

Fac. de Med., Inst. Anat., 31, Rue Lionnois, Nancy, France. DRAGOMIROW, N. Dr, Prof. — Lab. fur Organ, gen., Inst, fur

Evol. Morphol., Akad. der Wissensch. der U.S.S.R., Moskau,

U.S.S.R.



Dre 15 Fila

•DREYER, Miss M. V. — Dep. of Zool., Univ. Coll. O.F.S.. Bloem fontein, South Africa. •DUBOIS, Mile F. Dr es Sc. — Lab. d'Embryol. et Teratol. exper.

de l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol. gen.. 12.

Rue de l'Univ., Strasbourg, France.

DUSHANE, G. Ph. Dr, Prof. — Dep. of Biol.. Stanford Univ., Palo
Alto, Cal.. U.S.A. •EAKIN, R. M. A.B.. Ph.D., Prof. — Dep. of Zool., Univ. of Calif..

Berkeley 4, Cal., U.S.A. •EALES, Miss N. B. D.Sc. — Dep. of Zool., Univ., Reading,

Berkshire, England.

EBERT, J. D. — Dep. of Biol., The John Hopkins Univ., Charles and
34th Strs, Baltimore 18, Md, U.S.A.

EDDS, Jr, M. V. B.A., M.A., Ph.D., Prof. — Dep. of Biol, Brown
Univ., Providence, R.I., U.S.A. •EDWARDS, L. F. B.A.. M.Sc. Ph.D., Prof. — Dep. of Anat., Ohio

State Univ., Columbus 10, Ohio, U.S.A. •EEDEN, G. A. van M.Sc. — Zool. Inst., Univ. of Stellenbosch.

Stellenbosch, South Africa. •ELSHOUT, Mej. A. M. — Anat.-Embryol. Lab. der Rijks Univ.,

Boerhaavekwartier, Wassenaarseweg, Leiden, Holland. EMERSON WARREN, A. Dr, Prof. — Mc Master Univ., Hamilton, Ont., Canada.

ENGLANDER, H. Dr med., et rer. nat. — Inst. f. Entwickl. physiol.,
Kerpenerstr. 13, Kotn-Lindenthal, Deutschland.

ENTZ, B. A. G. Dr Phil. — Magyar Biologiai Kutatointezet, Tihany,
Hungary.

FABER, J. — Hubrecht Lab., Embryol. Inst., 2, Janskerkhof, Utrecht,
Holland. 'FABIAN, G. Dr — Hungarian Biol. Res. Inst., Tihany, Hungary. •FALCONER, D. S. B.Sc, Ph.D. — Inst, of Anim. Genet., West

Mains Rd, Edinburgh 9, U.K. •FANKHAUSER, G. Ph.D., Prof. — Dep. of Biol.. Princeton Univ..

Princeton, N.J., U.S.A. FAURE FREMIET, E. Dr, Prof. — Coll. de France, Place Mar celin Berthelot, Paris V*, France. •FAUTREZ, J. C. M.D., Prof. — Anat. Inst, der Rijks Univ., Byloke kaai 1, Gent, Belgie.

FAUTREZ-FIRLEFYN, Mvr. N. J. P. E. — Anat. Inst, der Rijks
Univ., Bylokekaai 1, Gent, Belgie. •FEKETE, E. Dr., Prof. — Roscoe B. Jackson Memorial Lab., Box

558, Bar Harbor, Me, U.S.A. FELL, Miss H. Dr — Strangeways Research Lab.. Cambridge,

England. •FEREMUTSCH, K. Dr Med. — Hirnanat. Inst, der Psychiatr.

Univ.klinik, Waldau, Bern, Schweiz. •FERNALD, R. L. Ph.D., Prof. — Dep. of Zool., Univ. of

Washington, Seatlle 5, Wash., U.S.A. •FERREIRA, W. A. B.S. — Dep. de Histol. y Embriol.. Fac. de Med..

Montevideo, Uruguay, S. America. FILATOW, D. Dr. Prof. — (Address unknown) U.S.S.R.

FILOGAMO, G. — Inst, of human Anat, Corso M. d'Azeglio 52,
Torino, Italy.

FISCHBERG, M. Dr Phil. — Genet. Lab., Anim. Breeding and
Genet. Res. Organ., Inst, of Anim. Genet., West Mains Rd.

Edinburqh 9, U.K.

FISK, A. M.Sc. — St. Mary's Hosp., Med. School, London W. 2.,
England. ♦FITZGERALD, L. R. Ph.D., Prof. — Coll. of Med., Univ. of Tennessee, Fac. of Biol, and Sci., Memphis 3, Tenn., U.S.A.

FLEXNER, L. B. B.S., M.D., Prof. — Dep. of Embryol., Carnegie
Inst, of Washington, Wolfe and Madison Strs, Baltimore 5,

Md, U.S.A.

FLICKINGER, R. A. Ph.D., Prof. — Dep. of Zool., Univ. of
Pennsylvania, Philadelphia 4, Pa, U.S.A.

FLORSCHOTZ, P. F. Drs — Hubrecht Lab., Embryol. Inst., Jans
kerkhof 2, Utrecht, Holland.

FONSECA SACARRAO, G, da Lie. e. Ci. — Museo Bocage da
Fac. d. Ci., Univ. de Lisboa, Portugal.

FORD, P. F.L.S., F.Z.S., B.Sc, Ph.D. — Dep. of Anat. and Embryol., Univ. Coll. London, Gower Str., London W.C. 1,
England.

FRANCHI, C. M. B.S. — Dep. de Histol. y Embriol., Fac. de Med.,
Montevideo, Uruguay, S. America.

FRANKENBERGER, Z. MUDr, Prof. — Embryol. ustav univ. Karlovy, Albertovy 4, Praha II, Czechoslowakia.
FRAPPIER, J. B.A., M.D., Prof. — Dep. d'Histol. et d'Embryol.,
Univ. de Montreal, 2900, Boulevard du Mont-Royal, Montreal,

Canada.

FRASER, A. S. B.Sc, M.Sc. — Inst, of Anim. Genet., West Mains
Rd, Edinburgh 9, U.K. FRASER, Miss E. A. Dr — Dep. of Zool., Univ. Coll., Gower Str.,

London W.C. 1, England.

FREEDMAN. R. M. B.A. — Inst, of Anim. Genet., West Mains
Rd, Edinburgh 9, U.K.

FRICK, H. Dr Med. — Dr Senckenbergisches Anat. Inst., der Univ.
Frankfurt/Main, Ludwig Rehnstr. 14, Frankfurt 'Main stid.,

Deutschland.

FRILLEY, M. Dr es Sc, — Lab. d'Embryol. du Lab. Pasteur de
l'lnst. du Radium, 26, Rue d'Ulm, Paris Ve, France.

FROUD, M. D. B.Sc. — Wye Coll.. Univ. of London, Ashford,
Kent, England.

FUMAGALLI, Z. Dott.Med. — 1st. Anat. della Univ. di Milano,
Via Mangiagalli 3L. Milano, Italia.

GAILLARD, P. J. Dr Med., Prof. — Histol. Lab., Wassenaarseweg,
Boerhaavekwartier, Leiden, Holland.

GALLERA, J. Ph.D. — Anat. Inst, der Univ., Gloriastr. 19, Zurich,
Schweiz.

GALLIEN, L. Dr es Sc. — Lab. de Biol, anim., (P.C.B. Section II),
Fac. des Sci., Univ. de Paris, 12, Rue Cuvier, Paris V*, France.

GARRETT, F. D. Ph.D., Prof. — Dep. of Anat., Ohio State Univ.,
Columbus 10, Ohio. U.S.A.


GAZDA, A. — Zaklad Anat. Porownawczej U.J. im. H. Hoyera, u.
sw. Anny 6, Krakow, Polska. GEIGY, R. Dr, Prof. — Inst. Tropical Suisse, Stappelberg 7, Basel,

Schweiz. GEORGE. W. C. Prof. — Dep. of Anat., Univ. of N.Carol., Chapel

Hill, N.C., U.S.A. GfiRARD, P. Dr. Prof. — Lab. d'Histol., 97, Rue aux Laines, Bruxel les, Belgique.

GHIRETTI, F. Dr Nat.Sc. — Zool. Stat.. Naples, Italy.
♦GILBERT, Miss C. M.Sc. — Univ. of the Witwatersrand, Milner park, Johannesburg, South Africa. GILCHRIST, F. G. Dr, Prof. — Lewis and Clark Coll., Portland,

Ore.. U.S.A.

GILLMAN, J. Prof. — Dep. of Embryol., Carnegie Inst, of
Washington, Wolfe and Madison Strs, Baltimore 5, Md, U.S.A.

GILMARTIN, Miss R. Grad.stud. — Osborn Zool. Lab., Yale Univ.,
New Haven, Conn., U.S.A.

GIROUD, A. Prof. — Lab. d'Embryol., Fac. de Med., 15, Rue ficole
de Med., Paris Vic, France.

GIROUD. P. — Lab. d'Embryol., Fac. de Med., 15, Rue ficole de
Med., Paris Vic, France.

GLOOR, H. Ph.D. — Zool.-vergl. Anat. Inst, der Univ. Zurich.
Kiinstlergasse 16, Zurich 6, Schweiz.

GODET, R. — Lab. de Biol. anim. (P.C.B. section II). Fac. des Sci.,
Univ. de Paris, 12, Rue Cuvier, Paris Vc, France.

GODINA, G. Prof. — Veter. Anat. Inst.. Via Nizza 52, Torino, Italy.
GODLEWSKI, H. G. M.D. — Inst, of Histol. and Embryol., Med.
Acad., Gdansk, Poland. GOLDSMITH, E. D. Dr, Prof. — Dep. of Histol., Coll. of Dentistry, New York Univ., 477, First Ave, New York 16, N.Y.,

U.S.A.

G0M5RY. A. M.D. — Anat. Dep., Univ. of Pecs, Dischka
Gyozo-u., 5, Pecs, Hungary. ♦GONZALEZ MARINO, R. E. B.S. — Dep. de Histol. y Embriol,

Fac. de Med., Montevideo, Uruguay, S. America.

GOODHART. C. B. M.A. — Dep. of Zool., Gonville & Caius Coll.,
Downing Str., Cambridge, England. ♦GOODRICH, H. B. B.S., M.A.. Ph.D.. Prof. — Dep. of Biol.,

Shanklin Lab.. Wesleyan Univ., Middletown, Conn., U.S.A.

GOSZWALD, K. Prof. — Zool. Inst, der Univ. Wiirzburg, Natur
wissensch. Fak., Rontgenring 10, Wiirzburg, Deutschland. GRAHAM, G. L. Prof. — Dep. of anim. and plant Pathol., Rockefeller Inst, for Med. Res., Princeton, N.J., U.S.A. GRAY, P. Prof. — Univ. of Pittsburgh, Pittsburgh, Pa. U.S.A.

GREGG, J. R. Ph.D. — Carlsberg Lab., Copenhagen, Denmark.
♦GROBSTEIN, C. Ph.D., Prof. — National Cancer Inst., Bethesda,

Md, U.S.A. ♦GRODZINSKI, Z. Prof. — Inst, of Comp. Anat., sw. Anny 6.

Krakow, Poland. GROS CLARK, W. E. le Dr, Prof. — Univ. of Oxford, Oxford

England.


GRUENWALD, P. M.D.. Prof. — Dep. of Pathol., Long Island Coll.
of Med.. 335, Henry Str., Brooklyn 2, L.I., New York, N.Y.,

U.S.A. ♦GRUNEBERG, H. Ph.D., M.D., D.Sc. — Dep. of Anat. and Em bryol., Univ. Coll. London, Gower Str.. W.C. 1, London,

England. ♦GUBBINS, J. F. A.B., M.A., Prof. — Dep. of Biol., Gonzaga Univ.,

Spokane II, Wash., U.S.A. ♦GUSTAFSON. T. Fil.lic. — Wenner-Grens Inst, for exper. Biol..

Norrtullsgatan 16, Stockholm, Sweden.

GUY£NOT, E. Dr.Med., Dr.Sc. — Inst, de Zool. et Anat., comp.,
Univ. de Geneve, Rue de Candolle, Geneve, Suisse. ♦GYLLENSTEN. L. J. W. lie. phys. — Hist. Dep.. Karolinska Inst.,

Stockholm, Sweden. ♦HADORN, E. Dr Phil., Prof. — Zool.-vergl. Anat. Inst, der Univ.

Zurich, Ktinstlergasse 16, Zurich 6, Schweiz. ♦HALE, L. J. B.Sc. — Dep. of Biol., The Med. Coll. of St Barthol.

Hospital. Charterhouse, London, E.C. 1, England.

HALL, E. K. M.D., Prof. — Dep. of Anat., School of Med., Univ.
of Louisville, 101, West Chestnut Str., Louisville 2, Ky, U.S.A. HALL, R. E. Prof. — Dep. of Zool., Univ. of Kansas, Lawrence,

Kan.. U.S.A. ♦HALL, T. S. Ph.D.. Prof. — Washington Univ., Lindell and Skinker

Aves, St Louis 5, Miss.. U.S.A. ♦HAMBURGER. V. Ph.D.. Prof. — Washington Univ., Lindell and

Skinker Aves, St Louis 5, Miss., U.S.A. ♦HAMILTON. H. L. Ph.D., Prof. — Dep. of Zool. and Entomol.,

Iowa State Coll., Ames, Iowa, U.S.A. 'HAMILTON, W. J. M.D., D.Sc, Prof. — Anat. Dep., Charing Cross

Hosp., Med. School, 62—65, Chandos Place, London W.C. 2,

England. ♦HAMMOND. W. S. Ph.D.. Prof. — Dep. of Anat., Coll. of Med..

Syracuse Univ., Syracuse, N.Y., U.S.A. ♦HAMPfi. A. Lie. es Sc. — Lab. d'Embryol. et de Teratol. exper. de

l'Univ. et du C.N.R.S.. Inst, de Zool. et de Biol. gen.. 12, Rue

de l'Univ., Strasbourg, France. ♦HARDE. Dr — Zool. Inst, der Westfalischen Landes-Univ.. Robert

Koch Str. 31, Minister, Westf., Deutschland. ♦HARKMARK. W. — Anat. Inst.. Univ. of Oslo, Oslo, Norway. ♦HARRIS, M. A.B., Ph.D., Prof. — Dep. of Zool., Univ. of Calif..

Berkeley 4, Cal.. U.S.A. ♦HARRISON. R. G. Sc.D., L.L.D.. M.D.. Ph.D.. Prof. (Emer.) —

Osborn Zool. Lab.. Yale Univ., New Haven, Conn., U.S.A. HARTMAN, C. G. Dr, Prof. — Ortho Res. Foundation, Dep. of

Phvsiol.. Raritan, N.J.. U.S.A. ♦HARTMAN. J. F. Ph.D., Prof. — Inst, of Anat., School of Med..

Univ. of Minnesota. Minneapolis 14, Minn., U.S.A. ♦HARTWIG. H. Dr Phil. — Inst. f. Entwickl. phvsiol.. Kerpenerstr.

13. Koln-Lindenthal, Deutschland. ♦HARVEY, Mrs E. B. A.B.. M.A., Ph.D., Prof. — Dep. of Biol..

Princeton Univ.. 48. Cleveland Lane. Princeton, N.J., U.S.A..


HARVEY. E. N. Dr. Prof. — Dep. of Biol.. Princeton Univ.. 48.

Cleveland Lane, Princeton, N.J.. U.S.A.

HAY, Mile D. Lie. es Sc. — Lab. d'Embryol. et Teratol. exper. de
l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12. Rue

de l'Univ., Strasbourg, France.

HAYES, E. R. Ph.D., Prof. — Dep. of Anat., Ohio State Univ..
Columbus 10, Ohio, U.S.A. 'HEAYSMAN, Miss J. E. M. B.Sc. — Queen Mary Coll., Mile End

Rd, London, E. 1, England. •HEILBRUNN, L. V. Ph.D., Prof. — Dep. of Zool., Univ. of

Pennsylvania, Philadelphia 4, Pa, U.S.A.

HEIMANN, H. Dr Med. — Hirnanat. Inst, der Psych. Univ. klinik.
Bern, Waldau, Schweiz.

HENKE, K. Dr Phil., Prof. — Mathematisch-Naturwissensch. Fak.,
Zool. Inst, der Univ., Gottingen, Deutschland.

HENLEY, C. Ph.D., Prof. — Dep. of Zool., Univ. of North Carol.,
Chapel Hill, N.C.. U.S.A.

HERLANT-MEEWIS, Mme H. — Lab. de Zool., Inst. Zool.
Torley-Rousseau, Univ. libre de Bruxelles, 51, Av. F. D.

Roosevelt, Bruxelles, Belgique. HERRICK, Ch. J. Dr, Prof. — Univ. of Chicago, 236, Morning Side

Drive, Grand Rapids 6, Mich., U.S.A. 'HERRMANN, H. Dr, Prof. — Lab. of chem. Embryol., Med. Center,

Colorado Univ., Denver 7, Col., U.S.A. •HERTIG, A. T. M.D.. Prof.

a. Boston Lying-in Hospital, 221, Longwood Ave, Boston 15, Mass., U.S.A.

b. Free Hospital for Women, 245, Pond Ave., Brooklyn, Mass.. U.S.A.

HETTIG, R. A. M.D., Prof. — Coll. of Med., Baylor Univ., Houston
5, Tex., U.S.A. 'HEUSER, Ch. H. A.B., M.S., Ph.D., Prof. — Dep. of Embryol., Carnegie Inst, of Washington, Wolfe and Madison Strs, Baltimore

5, Md, U.S.A. HEY, D. Dr — Inland Fisheries Dep., Jonkershcek. Stellenbosch,

S. Africa.

HEYN, C. B. — Anat.-Embryol. Lab. der Rijks Univ., Boerhaave
kwartier, Wassenaarseweg, Leiden, Holland. HIBBARD, H. Dr, Prof. — Oberlin Coll., Oberlin, Ohio, U.S.A.

HILL, J. P. F.R.S.; Prof. (Emer.) — Dep. of Anat. and Embryol.,
Univ. Coll. London, Gower Str., London W.C. 1, England.

Private addr.: ,,Kanimbla", Dollis Ave, Finchley, London N 3,

England. 'FULLER, S. M.D. — Inst, of Histol. and Embryol.. Med. Academy,

Gdansk, Poland. 'HINTZSCHE, E. Dr Med., Prof. — Anat. Inst., Biihlstr. 26, Bern,

Schweiz.

HISLOP, F. M. B.Sc. — Inst, of Animal Genet., West Mains Rd,
Edinburgh 9, U.K. 'HJELMMAN, G. M.D., Prof. — Anat. Inst, of the Univ. of Helsinki,

Helsinki, Finland.


HOADLEY, L. Dr, Prof. — Leveratt House, Harvard Univ., Cambridge, Mass., U.S.A. HOCHSTETTER, F. Dr, Prof. — Pokornygasse 23, Wien XIX/117,

Osterreich.

HOGEWONING, C. H. — Lab. v. Exper. Histol., Wassenaarseweg.
Leiden, Holland.

HOGUE, Miss M. J. A.B., Ph.D., Prof. — Dep. of Anat.. Univ. of
Pennsylvania, School of Med., Philadelphia 4, Pa, U.S.A. HOLMDAHL, E. Dr, Prof. — Anat. Inst., Upps. Univ., Uppsala,

Sweden.

HOLST CHRISTENSEN, P. J. Dr Phil. — Univ. Inst, for aim.
Zool., Univ. parken 3, Copenhagen P, Denmark.

HOLTER, H. Dr Phil. — Carlsberg Lab., Gl. Carlsbergvej 8, Copenhagen, Valby, Denmark.
HOLTFRETER, J. K. F. Ph.D., Prof. — Univ. of Rochester,
Dep. of Biologv, Coll. of Arts and Sci., Rochester 3,

N.Y., U.S.A. HOOKER, D. Prof. — Ladd Lab., Dep. of Anat., Univ. of Pa., School

of Med., Pittsburgh 15, Pa, U.S.A.

HORN, E. C. B.S., A.M., Ph.D., Prof. — Dep. of Zool., Duke Univ.,
Durham, N.C.. U.S.A.

HORST, C. J. v. d. D.Sc, Prof. — Zool. Dep. of the Univ., Milner
Park, Johannesburg, South Africa.

HORSTADIUS, S. Dr, Prof. — Uppsala Univ., Zool. Inst.. Uppsala,
Sweden. HOUSSAY, B. A. Prof. — Inst, de Biol, y Med. Exper., Costarica

4185, Buenos Aires, Argentina, S. America. HUANG, A. C. Dr — Dep. of Zool., Univ. of Shantung, Tsingtao,

China, Asia.

HUBER, W. Dr es Sc. — Lab. d'Embryol. et Teratol. exper. de
l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12, Rue

de l'Univ., Strasbourg, France.

HUBL, H. — Zool. Inst, der Univ. Wiirzburg, Naturwissensch. Fak.,
Rontgenring 10, Wiirzburg, Deutschland.

HUESTIS, R. R. Ph.D., Prof. — Biol. Dep., Univ. of Oregon,
Eugene, Ore., U.S.A.

HUGON de SCOEUX, Mile F. Lie. es Sc. — Lab. de Morphol.
anim., Univ. libre de Bruxelles, 1850, Chaussee de Wavre,

Bruxelles, Belgique.

HUIJBERS, Mej. M. M. Med. doct. — Anat.-Embryol. Lab., Mau
ritskade 61, Amsterdam, Holland.

HULTIN, J. M. T. Fil.lic. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, Stockholm, Sweden.

HUMMEL, Miss K. P. Sc.D., Ph.D., Prof. — Jackson Memorial
Lab., Box 558, Bar Harbor, Me, U.S.A. ♦HUMPHREY, R. R. A.M., Ph.D., Prof. — Dep. of Anat., Univ. of

Buffalo, School of Med., 24, High Str., Buffalo, N.Y., U.S.A. HUXLEY, J. S. Dr, Prof. — Zool. Lab., King's Coll., Strand, London

W.C. 2, England. HYDfiN, H. Dr — Inst, for Cell Res., Karolinska Inst.. Stockholm,

Sweden.

IMMERS, J. Mag. rer. nat. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, Stockholm, Sweden. INCE, Miss F. E. M.Sc. — Dep. of Zool.. Bedford Coll., Regents Park, London, England.

JANSEN, J. Dr Med.. Prof. — Anat. Inst., Univ. of Oslo, Oslo,
Norway.

•JANSSENS. J. — Lab. d'Embryol., Fac. des Sci., 71. Rue de Namur, Louvain, Belgique.

♦JOHNELS, A. G. Phil. Dr — Zootom. Inst., Univ. of Stockholm, Drottninggatan 116. Stockholm, Sweden.

'JOHNSON, M. W. A.B., Ph.D.. Prof. — Dep. of Zool., Duke Univ., Durham, N.C., U.S.A. JOLLY, J. Dr, Prof. — Coll. de France, Place Marcelin Berthelot, Paris Vc, France.

♦JORDAN, H. Ph.B., M.S., M.A., Prof. — Lab. of Histol. and Embryol., Dep. of Anat., Coll. of Med., Univ. of Vermont, Burlington, Vt., U.S.A.

JOST, A. Dr Sc. — Lab. de Biol, du P.C.B., Univ. de Paris, 12, Rue
Cuvier, Paris V«, France. KAELIN, J. Prof. — Inst, de Zool., Fribourg, Suisse.

KALSBEEK, F. Dr Med. — Anat.-Embryol. Lab. der Rijks Univ.,
Bcerhaavekwartier, Wassenaarseweg, Leiden, Holland.

KAMER, J. C. v. d. Dr Sc. — Zool. Lab. der Rijks Univ., Janskerkhof 3, Utrecht, Holland.
♦KAUDEWITZ, F. — Zool. Inst, der Univ., Holderlinstr. 12, Tubingen, Deutschland.

KEMP. Norman E. Ph.D., Prof. — Univ. of Michigan, Ann Arbor,
Mich., U.S.A.

•KERKHOF, Mej. A. M. M.D. — Anat.-Embryol. Lab. der Rijks

Univ., Boerhaavekwartier, Wassenaarseweg, Leiden, Holland.

KERR, Sir J. Graham Dr, Prof. — Dalney Veed, Royston (Herts.),

Barley, England. KINDAHL, Miss M. E. Dr Phil. — Zootom. Inst., Univ. of Stockholm, Drottninggatan 116, Stockholm, Sweden. KING, Miss H. D. Dr, Prof. — Wistar Inst., 36th St. and Woodland Ave., Philadelphia 4, Pa„ U.S.A.

'KLAPPER, Miss CI. E. Ph.D., Prof. — Med. Coll. of Alabama, Birmingham, Ala., U.S.A.

KLOFT, W. Dr rer. nat. — Zool. Inst, der Univ. Wurzburg,
Naturwissensch. Fak., Rontgenring 10, Wurzburg, Deutschland.

KNIEP, Mrs M. A. M.Sc. — Univ. of the Witwatersrand, Milnerpark, Johannesburg, South Africa.
KNOUFF, R. A. Ph.D., Prof. — Dep. of Anat., Ohio State Univ.,
Columbus 10, Ohio, U.S.A. KOLLROS, J. J. Dr. Prof. — Dep. of Zool.. State Univ. of Iowa,

Iowa City, Iowa. U.S.A. KOLTZOFF, N. K. Dr, Prof. — Inst, of Exper. Biol.. Voronzovo Pole, Moscow 67, U.S.S.R.

KONOPACKA. Br. Dr — Inst, of Histol. and Embryol.. Warsaw
Univ., Chalubihskiego 5, Warszawa, Poland.


KOPSCH, E. Dr, Prof. — Anat. Inst., Berlin-Wilmersdorf,

Deutschland.

KORNFELD, W. MUDr — Embryol. ustav, Univ. Karlovy, Praha
II, Albertov 4, Czechoslowakia.

KRABBE. Kn. H. Med. Dr, Prof. — Neurol. Dep. of Kommunehosp.,
Dronnings Tvaergade 6 s , Copenhagen, Denmark.

KRAHELSKA, J. Ph.D. — Inst, of Histol. and Embryol., Med.
Acad.. Gdansk, Poland.

KRAInSKA, M. K. Mag. of Sc. — Histol. and Embryol. Inst..
Univ. of Warszawa, ul. Chalubinskiego 5, Warszawa, Poland.

KREDIET, G. Dr, Prof. — Veter.-Anat. Inst., Biltstr. 172, Utrecht,
Holland.

KREMER, Mej. A. — Hubrecht Lab., Embryol. Inst., Janskerkhof 2.
Utrecht, Holland.

KROMPECHER, St. Dr, Prof. — Anat.-Embryol. Inst., Med. Fac,
Targu-Mures/Marosvasarhely/, Romania.

KROPP, B. N. A.M., Ph.D., Prof. — Queen's Univ., Med. School,
Kingston, Ont., Canada. 'KROTKIEWICZ, T. — Inst, of Histol. and Embryol.. Med. Acad.,

Gdansk, Poland.

KRUGELIS, Miss E. J. Ph.D. — Osborn Zool. Lab.. Yale Univ.,
New Haven, Conn., U.S.A.

KRZANOWSKI, A. Mag. of Sc. — Zool. Dep. of the Jagellonian
Univ., Krakow, St Anne 6, Poland.

KRZYSZTOFOWICZ, A. — Zool. Dep. of the Jagellonian Univ..
Krakow/Cracow/, St Anne 6, Poland.

KOHN. Alfred Dr Phil.h.c, Dr Phil.. Prof. — Zool. Inst, der Univ..
Holderlinstr. 12. Tubingen, Deutschland.

KURKIEWICZ. T. Dr Sc. Prof. — Inst. d'Histol. norm, et
d'Embryol. de l'Univ. Poznan, ul. Swiecickiego 6, Poznan,

Pologne.

KUTSKY, P. B. A.B., Ph.D., Prof. — Dep. of Zool., Univ. of
California, Berkeley 4, Cal., U.S.A.

KUUSI. Miss T. Mag. Phil. — Zool. Lab. of the Univ. of Helsinki.
Dep. of Physiol.. P. Rautatiekatu 13, Helsinki, Finland.

LALLIER. R. A. Lie. es Sc. — Lab. de Morphol. Anim., Univ. Libre
de Bruxelles, 1850, Chaussee de Wavre, Bruxelles, Belgique.

LANDAUER, W. Ph.D., Prof. — Dep. of Genet., Univ. of Connecticut, Storrs, Conn., U.S.A.
LANGEVOORT, H. L. M.Drs — Anat.-Embryol. Lab. der Rijks
Univ., Oostersingel 69, Groningen, Holland.

LANGMAN, J. — Anat.-Embryol. Inst., Mauritskade 61, Amsterdam,
Holland.

LARAMBERGUE, M. de Dr Sc, Prof. — Lab. de Zool.. Fac des
Sci., Poitiers, France.

LATIMER, H. B. Ph.D., Prof. — Univ. of Kansas, Lawrence, Kan..
U.S.A.

LAVELLE, A. B.S., M.S., Prof. — Dep. of Anat.. Univ. of Pennsylvania, School of Med.. Philadelphia 4, Pa, U.S.A.
LEACH. W. J. B.A., M.A., Prof. — Dep. of Anat., Ohio State
Univ., Columbus 10, Ohio, U.S.A.


LEBEDINSKY, N. G. Dr. Prof. — Vergl. Anat. und exper. Zool.

Inst, der Univ., Albeta iela 10, Riga, Lettland.

LEDUC, Miss E. H. Ph.D., Prof. — Arnold Biol. Lab., Brown
Univ., Providence 12, R.I., U.S.A.

LEE, G. M. A.B., Prof. — Med. Anat., Univ. of Kansas, Lawrence,
Kan.. U.S.A.

LEGHISSA, S. PH.D. (nat. So, 1937) — 1st. di Anat. comp.. Via
Belmeloro 8, Bologna, Italia.

LEHMANN, F. E. Dr Phil., Prof. - - Abt. fur Zoophysiol., Zool.
Inst, der Univ., Sahlistr. 8, Bern, Schweiz.

LEHMANN, H. E. M.A„ Ph.D., Prof. — Wilson Zool. Lab., Univ.
of North Carolina, Chapel Hill, N.C., U.S.A.

LELIfiVRE, A. — Lab. d'Embryol., Fac. de Med., 15, Rue ficole de
Med., Paris Vic, France. 'LENDER, Th. Prof. — Lab. d'Embryol. et Teratol. exper. de l'Univ.

et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12, Rue de

l'Univ., Strasbourg, France. + LENNEP, Jhr E. van Drs — Veter.-Anat. Inst., Biltstr. 172, Utrecht,

Holland.

LEPORI, N. G. lib. doc. — 1st. di Zool. e Anat. comp. dell'Univ.,
Via A. Volta 4, Pisa, Italia.

LEVI, G. L. Dr, Prof. (Emer.) — 1st. di Anat. dell'Univ.. Corso M.
D'Azeglio 52, Torino, Italia.

LEVI-MONTALCINI, R. M.D., Prof. — Washington Univ., Lindell and Skinker Aves., St. Louis 5, Mo., U.S.A.
LEWIS, F. Th. A.M., M.D., Prof. — Harvard Med. School, 25.
Shattuck Str., Boston 15, Mass., U.S.A. LEWIS, W. H. Dr, Prof. — Wistar Inst, of Anat. and Biol., Philadelphia 4, Pa, U.S.A.

LI, Miss S. C. B.S. — Dep. of Zool., Coll. of Sci., Nat. Univ. of
Peking, Ching Shan Tung Chieh, Peiping, China, Asia.

LIAO, Y. K. B.S. — Dep. of Zool., Coll. of Sci., Nat. Univ. of Peking,
Ching Shan Tung Chieh, Peiping, China, Asia. LILLIE, R. S. Prof. — Dep. of Physiol., Univ. of Chicago, Chicago,

111., U.S.A.

LINDAHL, P. E. Fil. Dr, Prof. — Inst, of Zoophysiol., Villavagen 9,
Uppsala, Sweden.

LINDBERG, N. O. H. Fil.Dr, Prof. — Wenner-Grens Inst, for
exper. Biol., Norrtullsgatan 16, Stockholm, Sweden.

LINDSTRoM, Th. J. J. V. Fil. lie. — Zootom. Inst., Univ. of
Stockholm, Drottninggatan 116, Stockholm, Sweden.

LINDVALL, S. Engineer. — Wenner-Grens Inst, for exper. Biol..
Norrtullsgatan 16, Stockholm, Sweden. LIOSNER, L. D. Dr — Inst, fur exper. Morphogen., Statsuniv..

Moskau, U.S.S.R. LIPSCHOTZ, A. Dr, Prof. — Dep. de Med. Exper., Avenida Irar razaval 849, Santiago de Chile, S. America. 'LITTLE, C. C. Sc.Dr, Prof. — Jackson Memorial Lab., Box 558.

Bar Harbor, Me, U.S.A.

LIU, J. C. B.S., Ph.D., Prof. — Dep. of Anat., School of Med., Univ.
of Pennsylvania, Philadelphia 4, Pa, U.S.A.


LOPASHOV, G. Dr — Inst, fur Cytol. und Embryol., Voronzovo, Pole 6, Moskau 120. U.S.S.R.

L0VTRUP, S. Mag.Sc. — Carlsberg Lab., Gl. Carlsbergvej 8,
Valby, Copenhagen, Denmark.

LUNDBLAD, Dr — Zool. Stat., Naples, Italy.
LOSCHER, M. Dr — Lab. d'Evolution, 105, Boulevard Raspail, Paris Vie, France.

LUTZ, H. Dr es Sc. — Lab. d'Embryol. et Teratol. exper. de l'llniv.
et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12, Rue de l'Univ., Strasbourg, France.

LUYENDIJK, W. M.D. — Anat.-Embryol. Lab. der Rijks Univ.,
Boerhaavekwartier, Wassenaarseweg, Leiden, Holland.

LYON, M. F. B.A., Ph.D. — Inst, of Anim. Genet., West Mains
Rd, King's Buildings, Edinburgh 9, U.K.

MACS. Miss K. — Zootom. Inst., Drottninggatan 116, Stockholm,
Sweden.

MALAN, M. E. D.Sc. — Zool. Inst., Univ. of Stellenbosch, Stellen
bosch, South Africa. MANGOLD, O. Dr, Prof. — Adresse nicht bekannt, Deutschland.

MANTON, S. M. F.R.S.; M.A., Sc.D. — Kings Coll., Strand,
London W.C. 2., England.

MARCHLEWSKI, J. H. Dr — Inst, of comp. Anat. Jaggelonian
Univ., Krakow, sw. Anny 6, Poland.

MARLIER, G. — Univ. libre de Bruxelles, 51, Av. F. D. Roosevelt,
Bruxelles, Belgique. 'MARTINET, M. — Lab. d'Embryol., Fac. de Med., 15, Rue ficole

de Med., Paris Vie, France.

MASY. — Inst. d'Anat, Univ. de Louvain, 38, Rue des Recollets,
Louvain, Belgique.

MAZANEC, K. MUDr — Embryol. ustav univ. Karlovy, Praha II,
Albertov 4, Czechoslowakia.

McCALLION, D. J. B.A., M.A., Prof. — Dep. of Biol., Acadia Univ.,
Wolfville, Nova Scotia, Canada.

MENNEGA, E. A. — Hubrecht Lab., Embryol. Inst., Janskerkhof 2,
Utrecht, Holland.

MENSCHIK, Z. M.B.. Ch.B.. M.D., Prof. — Dep. of Anat., Fac.
of Med., Univ. of Ottawa, Ottawa, Canada.

METZ, C. B. Ph.D., Prof. — Osborn Zool. Lab., Yale Univ., New
Haven, Conn., U.S.A.

MEYER, de — Inst. d'Anat., Univ. de Louvain, 38, Rue des Recollets,
Louvain, Belgique.

MICHELI, A. — Inst. d'Anat., Ecole de Med., 20, Rue ficole de Med.,
Geneve, Suisse.

MI§TKIEWSKI, C. Dr, Prof. — Inst. d'Histol. norm, et d'Embryol.
de l'Univ. Poznan, ul. Swiedckiego 6, Poznan, Pologne. MIJSBERG, W. A. Dr, Prof. — Anat.-Embryol. Lab. der Rijks Univ.

Utrecht, Janskerkhof 3, Utrecht, Holland.

MILLARD, Mrs N. A. H. Ph.D. — Dep. of Zool., Univ. of Cape
Town, Cape-Town, Rondebosch, South Africa.

MINGANTI, A. Dr — 1st. di Zool., Via Archirafi, Palermo,
Italia.


MOLEN, L. A. v. d. M.D. — Hubrecht Lab., Embryol. Inst..

2, Janskerkhof. Utrecht, Holland.

MOLL. J. Drs Med. — Anat. -Embryol. Lab., Oostersingel 69, Gro
ningen, Holland.

MONN£, L. Phil. Dr. Prof. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, Stockholm, Sweden. ♦MONROY. A. Dr Med., Prof. — Zool. Stat., Naples, Italy. 'MONROY-ODDO, Mrs A. Dr Chem. — Zool. Stat., Naples,

Italy.

MONTALENTI, G. Dr So, Prof. — 1st. di Genet., Via Mezzo
cannone 8, Napoli, Italia.

MOOG. F. Ph.D., Prof. — Washington Univ., Lindell and Skinker
Aves, St. Louis, Mo., U.S.A. 'MOOKERJEE, S. M.Sc. Ph.D. — Inst, of Anim. Genet., West

Mains Rd, King's Buildings, Edinburgh 9, U.K. 'MOORE, A. R. Ph.D.. Prof. — Dep. of Biol., Univ. of Portland,

Portland 3, Ore., U.S.A. MOORE, C. R. Dr, Prof. — Dep. of Zool., Univ. of Chicago,

Chicago, 111., U.S.A. 'MORGAN. Miss M. R. B.Sc. — Dep. of Embryol., Univ. Coll. London, Gower Str., London W.C. 1, England.

MORLON, Mile C. — Lab. d'Embryol., Fac. de Med., 15, Rue ficole
de Med., Paris Vie, France. 'MOSSMAN, H. W. Ph.D., B.S., M.S., Prof. — Dep. of Anat., Univ.

of Wisconsin, Madison, Wis., U.S.A.

MULNARD, J. M.D. — Inst. d'Anat., 97, Rue aux Laines, Bruxelles,
Belgique. ♦MURRAY, P. D. F. D.Sc. M.A., Prof. — Dep. of Zool.. Univ. of

Sydney, Sydney, N.S.W., Australia.

MUSTAKALLIO, M. M.D., Prof. — Dep. of Anat., Helsinki Univ.,
Helsinki, Finland.

NACE, G. W. B.A., M.A., Prof. — Dep. of Zool., Univ. of California, Los Angeles 24, Cal., U.S.A.
NAGY, I. M.D. — Szegedi Tudomanyegyetem Bonctani, Szovet-es
Fejlodestani Intezete, (Inst, of Anat., Hist, and Embryol.),

Szeged, Hungary.

NATER, H. Ph.D., P.D. — Zool.-vergl. Anat. Inst, der Univ.,
Zurich, Schweiz.

NEBEL, L. Phys. — Anat. -Embryol. Inst., Med. Fac, Targu-Mures,
Marosvasarhely, Romania. NEEDHAM, A. E. Dr — Dep. of Zool. and comp. Anat., The Univ.

Museum, Oxford, England. NEEDHAM, J. Dr, Prof. — Cains Coll., Cambridge, England.

NEIGER, M. — Inst. d'Anat.. ficole de Med., 20. Rue ficole de Medicine, Geneve, Suisse.
NELSEN. O. E. Ph.D.. Prof. — Dep. of Zool., Univ. of Pennsylvania. Philadelphia, Pa. U.S.A.
NEWELL, G. E. B.Sc, Ph.D. — Queen Mary Coll., Mile End Rd,
London W. 1., England.

NEWHALL, C. A. A.B., M.D., Prof. — Dep. of Anat., Univ. of
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NEWTH, D. R. B.Sc. — Dep. of Zool., Univ. Coll. London, Gower
Str., London W.C. 1, England. 'NEWTON, B. L. M.D., CM., Prof. — Coll. of Med., Baylor Univ.,

Houston 5, Tex., U.S.A.

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NOEL, Miss Elizabeth, Grad. stud. — Osborn Zool. Lab., Yale Univ.,
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NOVIKOFF, A. B. Ph.D., Prof. — Coll. of Med., Univ. of Vermont, Burlington, Vt, U.S.A.
NOESCH, H. Dr Sc, P.D. — Zool. Anstalt der Univ., Rhein
sprung 9, Basel, Schweiz.

ODE, Mej. E. — Anat.-Embryol. Lab. der Rijks Univ., Boerhaave
kwartier, Wassenaarseweg, Leiden, Holland.

OLIVO, O. M. Med. Dr, Prof. — 1st. di Istol. e Fisiol., Via Bel
meloro 8, Bologna, Italia.

OLSSON, R. — Zootom. Inst., Univ. of Stockholm, Drottninggatan
116, Stockholm, Sweden.

OORDT, P. van — Hubrecht Lab., Embryol. Inst., Janskerkhof 2,
Utrecht, Holland.

OORT, J. — Histol. Lab., Boerhaavekwartier, Leiden, Holland.
OPPENHEIMER, J. M. Dr, Prof. — Dep. of Biol., Bryn Mawr Coll.,

Bryn Mawr, Pa, U.S.A.

ORLANDI, A. Dr — 1st. di Zool. e Anat. comp., Fac. di. Sci., Via
Celoria 10, Milano, Italia.

ORLOWSKI, A. B.Sc. — Dep. of Endocrinol., Fac. of Med., Univ.
of Lodz, Nowotki 137, Lodz, Poland.

ORSKA, Miss J. Ph.D. — Zaklad Anat. Porownawczej Inst. Zool.
Uniw., UI. Sienkiewicza 21, Wroclaw, Poland.

ORTS LLORCA, F. Prof. — Lab. de Anat. y Embriol.. Fac. de Med..
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OSTERTAG, Mile Y. Lie. es Sc. — Lab. d'Embryol. et de Teratol.
exper. de l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen.,

12, Rue de l'Univ., Strasbourg, France.

OVERGAARD, C. Dr Phil. — Inst, for Aim. Zool., Universitetspar
ken 3, Copenhagen (J), Denmark.

PADOA, E. Dr, Prof. — 1st. di Biol, e Zool. gen., Piazza S. Agostino
4, Siena, Italia. PAI, S. Dr, Prof. — Dep. of Biol., Nat. Chekiang Univ., Hangchow,

China, Asia.

PANIJEL, J. — Inst. d'Anat., 97, Rue aux Laines, Bruxelles, Belgique.
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Pasadena 4, Cal., U.S.A.

PAPI, F. Dott. in Sc. — 1st. di Zool. e Anat. comp. dell'Univ., Via
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'PARMENTER. C. L. Ph.D.. Prof. — Dep. of Zool.. Univ. of

Pennsylvania, Philadelphia 4, Pa, U.S.A. 'PASCHMA, M. M.Ph. — Inst. Zool. Uniw.we Wroclawiu, Zaklad

Zool. Ogolnej. ul. Sienkiewicza 21, Wroclaw, Polska

(Poland, 1). 'PASQUINI. P. Ph.D.. Prof. — 1st. di Anat. comp., Via Belmeloro

8, Bologna, Italia. ♦PASTEELS, J. J. M.D.. Agr. E.S., Prof. — Inst. d'Anat., 97, Rue

aux Laines, Bruxelles, Belgique. PATTEN, B. M. Dr, Prof. — Dep. of Anat., Med. School, Univ.

of Michigan, 2500 East Med. Bldg.. Ann Harbor, Mich., U.S.A. 'PEACOCK, A. Dr M.B., M.Sc, M.R.C.S. — Anat. Dep., London

Hosp., Med. Coll., Univ. of London, Turner Str., London E. 1,

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Columbia Univ., New York City, N.Y.. U.S.A. "PEERS. Miss D. J. B.A. — Dep. of Biol, and Entomol., Ontario

Agricult. Coll., Guelph, Ont., Canada. 'PEHRSON, G. T. Dr, Prof. — Zootom. Inst., Univ. of Stockholm.

Drottninggatan 116, Stockholm, Sweden. 'PENNERS, A. Prof. — Zool. Inst, der Univ. Wurzburg, Natur wissensch. Fak., Rontgenring 10, Wurzburg, Deutschland. 'PERITZ, Miss K. — Zool. Inst., Univ. of Stellenbosch, Stellenbosch,

South Africa. 'PERLMANN, H. P. — Wenner-Grens Inst, for exper. Biol., Norr tullsgatan 16, Stockholm, Sweden.

PERRI, T. Dott., Prof. — 1st. di Anat. comp., Via Borelli 50, Roma,
Italia. 'PERRY, J. H. Ph.D., Prof. — Dep. of Anat., Baylor Univ., Coll. of

Med.. 1200 M. D. Anderson Blvd, Texas Med. Center, Houston

5, Tex., U.S.A. 'PESONEN, S. Dr Phil. — Zool. Lab. of the Univ. of Turku. Turku,

Finland. 'PETER, K. Dr. Prof. (Emer.) — Anat. Inst.. Strahlsunderstr. 10.

Greifswald, Deutschland.

Privat Adr.: Birkenstein, Post Fischbachau, Oberbayern,

Deutschland. 'PFLEGER, Mile D. Lie. es Sc. — Lab. d'Embryol. et Teratol. exper.

de 1'Univ. et du C.N.R.S., Inst, de Zool. et de Biol. gen.. 12.

Rue de l'Univ., Strasbourg, France. 'PHILIPS. R. J. S. B.Sc. — Inst, of Anim. Genet.. West Mains Rd.

King's Buildings. Edinburgh 9, U.K. 'PIATT. J. A.B.. M.A.. Ph.D.. Prof. — Dep. of Anat.. Univ. of

Pennsylvania, School of Med., Philadelphia 4, Pa, U.S.A. 'PIEPHO, H. Dr Phil., Prof. — Math.-Naturw. Fak.. Zool. Inst, der

Univ., Gottingen, Deutschland. PINCUS. G. Dr. Prof. — Tufts Coll.. Med. School and Worcester Foundation for Exper. Biol., 222. Maple Ave. Shrewsbury,

Mass.. U.S.A. 'PIOTROWSKA, J. — Inst, of Histol. and Embryol.. Med. Acad..

Gdansk, Poland.

PISANO, A. Doct. en Ci., Prof. — Inst, de Zool., Ci. Biol., Univ.
Nac. de Tucuman, Miguel Lillo 205, Argentien, S. America.

PLANQUE. B. de — Hubrecht Lab. Embryol. Inst., Janskerkhof 2,
Utrecht, Holland.

PLETZEN, R. van M.Sc. — Zool. Inst., Univ. of Stellenbosch,
Stellenbosch, South Africa. POLEZAJEW, L. W. Dr — Inst, of Cytol., Histol. and Embryol. of the Acad, of Sci. of the U.S.S.R., Obrexh Str. 6, Moscow; U.S.S.R. POLICARD, A. Dr, Prof. — Inst. d'Histol., Lyon, France. POLITZER, G. Dr, Prof. — Krishna Lodge, Karol Bagh, Delhi, India.

PORTMANN, A. Dr Phil., Prof. — Zool. Anstalt der Univ., Rhein
sprung 9, Basel, Schweiz.

POSALAKY, Z. — Anat. and Biol. Inst, of the Med. Fac. of the Univ.,
Debrecen, Hungary.

POULSON, D. F. Ph.D., Prof. — Osborn Zool. Lab., Yale Univ.,
New Haven, Conn., U.S.A.

PREDA, V. Med. Dr, Prof. — Inst, de Biol., Strada Mico 3, Cluj,
Roumanie.

PRETO PARVIS, V. Dott. Med., Prof. — 1st. di Anat. umana norm.
dell'Univ. di Milano, Via Mangiagalli 31, Milano, Italia.

PRINS, J. X. B.Sc. — Zool. Inst., Univ. of Stellenbosch, Stellenbosch,
South Africa. PUSEY, H. K. Dr, Prof. — Dep. of Zool. and comp. Anat., Univ. Museum, Oxford, England.

RADECKA, E. M.Ph. — Inst. Zool. Uniw.we Wrocklavviu, Zaklad
Zool. Ogolnej, ul. Sienkiewicza 21, Wroclaw, Polska, (Poland, 1).

RADKOWA, M. Vet. Phys. — Zaklad Hist, i Embriol. Uniw. ul.
Chalubinskiego 6a, Wroclaw, Polska.

RAJKOVITS, Ch. — Anat. Dep., Univ. of Pecs, Dischka Gyozo-u. 5,
Pecs, Hungary.

RAMSEY, Miss E. M. A.B., M.D., Prof. — Dep. of Embryol., Carnegie Inst, of Washington, Wolfe and Madison Strs, Baltimore
5, Md., U.S.A.

RANZI, S. Prof. — 1st. di Zool. et Anat. comp., Fac. di Sci., Via
Celoria 10, Milano, Italia.

RAUNICH, L. Ph.D., M.D. — 1st. di Anat. comp., Via Belmeloro 8,
Bologna, Italia.

RAVEN, Chr. P. F.R.A.; Dr Sc, Prof. — Zool. Lab. der Rijks Univ.,
Janskerkhof 3, Utrecht, Holland.

Hubrecht Lab., Internat. Embryol. Inst., Janskerkhof 2, Utrecht, Holland.

RAWLES, Miss M. E. Ph.Dr, Prof. — Dep. of Biol., The Johns
Hopkins Univ., Charles and 34th Strs, Baltimore 18, Md., U.S.A.

RAYNAUD, A. Dr es Sc. — Lab. d'Embryol. du Lab. Pasteur de
l'lnst. du Radium. 26, Rue d'Ulm, Paris Vc, France.

REEVE, E. C. B.A., Ph.D. — Genet. Lab., Anim. Breeding and
Genet. Res. Organ., Inst, of Anim. Genetics, West Mains Rd, King's Buildings, Edinburgh 9, U.K.

REHM, Frl. M. — Zool. Inst, der Univ., Hdlderlinstr. 12, Tubingen,
Deutschland. •REVERBERI, G. Dr, Prof. — 1st. di Zool., Via Archirafi 18,

Palermo, Italia. •REYER, R. W. Ph.D., Prof. — Osborn Zool. Lab., Yale Univ.,

New Haven, Conn., U.S.A. REYNOLDS, B. D. Prof. — Dep. of Biol., Univ. of Virg., University, Va, U.S.A. 'REYNOLDS, S. R. M. A.B., M.S.. Ph.D., Prof. — Dep. of Em bryol., Carnegie Inst, of Washington, Wolfe and Madison

Strs, Baltimore 5, Md, U.S.A. ♦RHODES, S. Prof. — Zool. Dep.. Duke Univ., Durham, N.C., U.S.A. •RISLER, H. Dr rer. nat. — Zool. Inst, der Univ., Hdlderlinstr. 12,

Tubingen, Deutschland. •RISLEY, P. L. A.B., M.S., Ph.D., Prof. — Dep. of Biol., Univ. of

Oregon, Eugene, Ore., U.S.A. •RIZZOLI, C. M.D. — 1st. di Istol. e Fisiol. gen., Via Belmeloro 8,

Bologna, Italia. •ROBERTSON, F. W. B.Sc, Ph.D. — Genet. Lab., Anim. Breeding

and Genet. Res. Organ., Inst, of Anim. Genet., West Mains

Rd, King's Buildings, Edinburgh 9, U.K. •ROBERTSON, G. G. Ph.D., Prof. — Baylor Univ. Coll. of Med.,

Dep. of Anat., 1200 M. D. Anderson Blvd. Texas Med. Center,

Houston 5, Tex., U.S.A. •ROETHELI, A. — Abt. f. Zoophysiol. des Zool. Inst, der Univ., Phi losoph. Fak. II, Sahlistr. 8, Bern, Schweiz. •ROOFE, P. G. Ph.D., Prof. — Univ. of Kansas, Lawrence, Kan.,

U.S.A. ROSE, S. M. Dr, Prof. — Dep. of Zool., Smith Coll., Northamton,

Mass., U.S.A. •ROSENBAUM, R. M. B.S., M.S.. Prof. — Biol. Lab., Harvard Univ.,

Cambridge 38, Mass., U.S.A. ROSIN, S. Dr — Zool. Inst., Muldenstrasse 8, Bern, Schweiz. ROSTAND, P. J. — Lab. devolution des fitres organises, 105, Boulevard Raspail, Paris Vie, France. •ROTMANN, E. Dr phil. nat., Prof. — Inst", fur Entw. physiol.,

KerDenerstr. 13, Koln-Lindenthal, Deutschland. •RUDNICK, Miss D. Ph.D., Prof. — Osborn Zool. Lab., Yale

Univ., New Haven, Conn., U.S.A. RUGH, R. Dr, Prof. — Coll. of Phys. and Surg., Columbia Univ.,

New York City, N.Y., U.S.A. ♦RUNNER, M. N. Ph.D., Prof. — Roscoe B. Jackson Memorial Lab.,

Box 558, Bar Harbor, Me, U.S.A. •RUNNSTROM, J. A. M. Ph.Dr, Med. Dr., Prof. — Wenner-Grens

Inst, for exper. Biol.. Norrtullsgatan 16, Stockholm 23, Sweden. •RUSSELL, Miss E. S. A.B., M.A., Ph.D., Prof. — Roscoe B. Jackson

Memorial Lab., Box 558, Bar Harbor, Me, U.S.A. RUUD, G. Prof. — Zool. Lab. der Univ., Oslo, Norwegen. •SALZGEBER, Mile B. Lie. es Sc. — Lab. d'Embryol. et Teratol.

exper. de 1'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen.,

12, Rue de l'Univ., Strasbourg, France.


SANDISON, Miss E. E. B.Sc. — Dep. of Zool., Univ. of Cape
Town, Cape Town, South Africa.

SARA\ M. Dr Sc. — 1st. di Genet., Via Mezzocannone 8, Napoli,
Italia. SAUNDERS. Prof. — Dep. of Zool., Marquette Univ., Milwaukee

3, Wis., U.S.A.

SAVAY, Gy. M.D. — Szegedi Tudomanyegyetem Bonctani, Szovet
es Fejlodestani Intezete, (Inst, of Anat., Hist, and Embr.),

Szeged, Hungarv.

SAWIN, P. B. Sc.D.', Prof. — Roscoe B. Jackson Memorial Lab.,
Box 558, Bar Harbor, Me, U.S.A.

SCHECHTMAN, A. M. A.B., Ph.D., Prof. — Dep. of Zool., Univ.
of California, Los Angeles 24, Cal., U.S.A.

SCHENK, R. Dr Med. — Anat. Inst, der Univ., Gloriastr. 19,
Zurich, Schweiz.

SCHJEIDE, O. A. A.B., M.A., cand. Ph.D. — Dep. of Zool., Univ.
of California, Los Angeles 24, Cal., U.S.A. SCHMIDT, G. A. Dr, Prof. — Inst. f. exp. Biol., Moscow, U.S.S.R.

SCHMIRLER, H. — Zool. Inst, der Univ. Wurzburg, Naturwissen
sch. Fak., Rontgenring 10, Wurzburg, Deutschland. SCHOTTE, O. E. Dr, Prof. — Dep. of Biol., Amherst Coll., Amherst,

Mass., U.S.A.

SCHREIBER, B. Prof. — 1st. di Zool. e Anat. comp., Fac. di Sci.,
Via Celoria 10, Milano, Italia.

SCHUE, Mile M. Lie. es Sc. — Lab. d'Embryol. et Teratol. exper.
de l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12,

Rue de l'Univ., Strasbourg, France. ♦SCHWINCK, Frl. I. — Zool. Inst, der Univ., Holderlinstr. 12, Tubingen, Deutschland.

SEDRA, S. N. B.Sc, M.Sc. — Present address: Dep. of Zool.,
Sheffield Univ., Sheffield, England.

(On Mission from: Dep. of Zool., Farouk I Univ., Moharram

Bey, Alexandria, Egypt.)

SEMBRAT, K. Ph.D., Prof. — Inst. Zool. Uniw. we Wroclawiu,
Zaklad Zool. Ogolnej, ul. Sienkiewicza 21, Wroclaw, Polska.

SEMBRATOWA, Z. M.D., Prof. — Zaklad Hist, i Embriol. Uni
wers., ul. Chalubihskiego 6a, Wroclaw, Polska (Poland). 'SENSENIG, E. C. B.A., M.S., Ph.D., Prof. — Schools of Med. and

Dent., Med. Center of the Univ. of Alabama, 620, South 20th

Str., Birmingham 5, Ala., U.S.A.

SHANER, R. F. Ph.D., Prof. — Dep. of Anat, Univ. of Alberta,
Med. School, Edmonton, Alberta, Canada. 'SHAPIRO, H. B.S., A.M., Ph.D., Prof. — Marine Biol. Lab.. Woods

Hole, Mass., U.S.A. •SHAVER, J. R. A.B., A.M. — Lab. de Morphol. anim., Univ. libre

de Bruxelles, 1850, Chaussee de Wavre, Bruxelles, Belgique. ♦SHELLHAMER, R. H. B.A., M.A., Prof. — Dep. of Anat., Ohio

State Univ., Columbus 10, Ohio, U.S.A.

SHEN, S. C. M.D., Ph.D., Prof. — Osborn Zool. Lab., Yale Univ.,
New Haven, Conn., U.S.A.

Biol. Dep., Nat. Tsinghwa Univ., Peking, China, Asia. (?)


SIEKERT, R. G. B.S., M.S., M.B., M.D., Prof. — Dep. of Anat..

Univ. of Pennsylvania, School of Med., Philadelphia 4, Pa,

U.S.A. 'SILBERBAUER, Mrs B. I. B.Sc. — Dep. of Zool., Univ. of Cape

Town, Cape Town, South Africa. ♦SINCLAIR, }. G. B.S.. M.S., Ph.D., Prof. — Dep. of Anat., Med.

Branch, Univ. of Texas, Galveston, Tex., U.S.A.

SINGER, J. B.A. — Dep. of Aanat. and Embryol., Univ. Coll., Gower
Str., London W.C. 1, England. 'SINGER, M. A.M., Ph.D., Prof. — Dep. of Anat., Harvard Med.

School, 25, Shattuck Str., Boston 15, Mass., U.S.A.

SINHA, T. P. B.S., M.S., M.D., Prof. — Dep. of Anat., Univ. of
Pennsylvania, School of Med., Philadelphia 4, Pa, U.S.A. 'SIPPEL, Th. Grad.stud. — Osborn Zool. Lab., Yale Univ., New

Haven, Conn., U.S.A. 'SLOTWlNSKI, J. Dr, Prof. — Inst. d'Histol. norm, et d'Embryol.

de l'Univ. Poznari, ul. Swi^cickiege 6, Poznan, Pologne. 'SMRECZYnSKI, S. Ph.D. — Zool. Dep. of the Jagellonian Univ.,

Krakow/Cracow.', St Anne 6, Poland. 'SNELLEN, H. A. — Anat.-Embryol. Lab. der Rijks Univ., Boer haavekwartier, Wassenaarseweg, Leiden, Holland. 'SNYDER, F. F. M.D., A.M., Prof. — Dep. of Anat., Harvard Med.

School, 25, Shattuck Str., Boston 15, Mass., U.S.A. 'SOBELS, F. H. Drs — Zool. Lab., Janskerkhof 3, Utrecht, Holland. ♦SODERWALL, A. L. Ph.D.. Prof. — Biol. Dep., Univ. of Oregon.

Eugene, Ore., U.S.A. 'SOLEWSKI, W. — Zaklad Anat. Porownawczej U.J., im. H. Hoyera,

ul. sw. Anny 6, Krakow, Polska (Poland). SPEIDEL, C. C. Dr, Prof. — Dep. of Anat., Med. Coll., Univ. of

Virginia, Charlottesville, Va, U.S.A. SPIEGELMAN, S. Dr, Prof. — Dep. of Physiol., Div. of Cancer

Biol., Univ. of Minnesota, Minneapolis 14, Minn., U.S.A. SPIKES, J. D. Prof. — W. G. Kerckhoff Marine Lab., Calif. Inst.

of Technol., Pasadena 4, Cal., U.S.A. SPIRITO, A. Prof. — 1st. di Biol, e Zool. gen., Perugia, Italia. 'SPRATT, Nelson T. A.B., Ph.D., Prof. — Dep. of Zool., Univ. of

Minnesota. Coll. of Sci., Lit. and Arts, Minneapolis 14, Minn.,

U.S.A.

STARCK, D. Prof. — Anat. Inst, der Univ.. Ludwig Rehnstr. 14,
Frankfurt/Main, Deutschland.

STEFANELLI, A. Dr, Prof. — 1st. di Zool., Univ. di Stato, Viale
S. Bartolomeo, Cagliari, Sardegna, Italia. •STEINER, H. Ph.D., Prof. — Zool.-vergl. Anat. Inst, der Univ.,

Kunstlergasse 16, Zurich 6, Schweiz.

STELT, v. d. — Zool. Lab., Univ. van A'dam, Plantage Doklaan 44,
Amsterdam, Holland. 'STEPHAN, F. Lie. es Sc. — Lab. d'Embrvol. et Teratol. exper. de

l'Univ. et du C.N.R.S.. Inst, de Zool. et de Biol, gen., 12, Rue

de l'Univ., Strasbourg, France. 'STEPHENSON, N. G. M.Sc. — Auckland Univ. Coll., New Zealand, Australia.



STEVENS, L. C. Grad.stud. — Univ. of Rochester, Dep. of Biol.,

Rochester 3, N.Y., U.S.A.

STICH. H. Dr — Zool. Inst, der Univ. Wiirzburg, Naturwissensch.
Fak., Rontgenring 10, Wiirzburg, Deutschland. STIEVE, H. Dr, Prof. — Anat. Lab., Luisenstrasse 56, Berlin N.W. 7, Deutschland.

STOIGER, H. — Zool. Anstalt der Univ., Rheinsprung 9, Basel,
Schweiz.

STOLL, R. Dr en Med., Dr es Sc. — Inst. d'Embryol. et de Morphol. exper., Fac. de Med., 97, Allee de la Robertsau, Strasbourg, (Bas-Rhin), France.
STONE, L. S. Ph.D.. Prof. — Osborn Zool. Lab., Yale Univ., New
Haven, Conn., U.S.A.

STRAUSS, F. Dr Med. — Anat. Inst., Buehlstr. 26, Bern, Schweiz.
STRAUSS Jr, W. L. Dr, Prof. — Dep. of Anat., The John Hopkins
Univ., Charles and 34th Strs, Baltimore 18, Md, U.S.A.

STRAWINSKI, S. — Zaklad Anat. Porownawczej i Embriol. Uniw.
M. Kopernika, Sienkiewicza 30, Torun, Polska (Poland)).

STRUDEL, G. Dipl. d'etudes super., Lie. es Sc, Prof. — Lab.
d'Embryol. et Teratol. exper. de l'Univ. et du C.N.R.S., Inst. de Zool. et de Biol, gen., 12, Rue de l'Univ., Strasbourg, France.

STULTZ, W. A. B.A., Ph.D., Prof. — Univ. of Vermont, Coll. of
Med., Burlington, Vt, U.S.A. STUMP, W. Prof. — Dep. of Embryol. and Histol., Univ. of Sydney, Sydney, N.S.W. Australia.

SUOMALAINEN, H. — Zool. Lab. of Univ. of Helsinki, Dep. of
Physiol., P. Rautatiek. 13, Helsinki, Finland. SVETLOV, P. Dr, Prof. — Inst, fur exper. Med. der U.S.S.R., Abt. fur exper. Embryol., Leningrad, U.S.S.R.

3WIERZAWSKA, K. — Zaklad Anat. Porownawczej U.J. im H.
Hoyera, ul. sw. Anny 6, Krakow, Polska (Poland).

SWEDMARK, B. G. Fil.mag. — Inst, of Zoophysiol., Villavagen 9,
Uppsala, Sweden.

SZARSKI, K. W. Ph.D. — Zaklad Anat. Porownawczej Instytut
Zool. Uniwers., Ul. Sienkiewicza 21, Wroclaw, Polska (Poland).

SZENTAGOTHAI, M. D. M.D., Prof. — Anat. Dep., Univ. of
Pecs, Dischka Gyoz6-u. 5, Pecs, Hungary.

SZENTPETERY, J. C. M.D. — Dep. of Anat. and Embryol.,
Medico-Farmaceutic Inst, of Tg. Mures, Tg.Mures, Romania. TAMINI, Miss E. P. Dott. — S. Camilo 303 A, Arequipa, Perou,

S. America. TAYLOR, A. C. Dr — Dep. of Zool., Univ. of Chicago, Chicago,

111., U.S.A.

TEYSSEYRE, Mile Jacq. — Lab. d'Embryol., Fac. de Med., 15, Rue
Ecole de Med., Paris Vic, France.

THEILER, K. Dr med. — Anat. Inst, der Univ. Zurich, Gloriastr. 19,
Zurich, Schweiz.

THERMES, G. Dr — 1st. di Zool., Univ. di Stato, Viale S. Bartolomeo, Cagliari, Sardegna, Italia.


THOMSON FLYNN, T. Dr, Prof. — Fac. of Sci., Queens Univ.,

Belfast, Ulster, Eire.

TOIVONEN, S. Dr phil. — Zool. Lab. of Univ. of Helsinki, Dep.
of Physiol.. P. Rautatiekatu 13, Helsinki, Finland.

TONDURY, G. Prof. — Anat.-Embryol. Inst., Med. Fak. der Univ.,
Gloriastr. 19, Zurich, Schweiz.

T6R5, I. Dr, Prof. — Anat. and Biol. Inst, of the Med. Fac. of the
Univ., Debrecen, Hungary.

TOWNES, Ph. L. Grad.stud. — Dep. of Biol.. Coll. of Arts and Sci.,
Univ. of Rochester, Rochester 3, N.Y., U.S.A.

TRACY, H. C. Ph.D., Prof. — Univ. of Kansas, Lawrence, Kan.,
U.S.A.

TRAMPUSCH, H. A. L. Dr Phil. — Anat.-Embryol. Lab., Maurits
kade 61, Amsterdam, Holland.

TRIBE. Miss M. D.Sc. — King's Coll., Strand, London W.C. 2,
England.

TRINKAUS, J. P. M.A., Ph.D., Prof. — Osborn Zool. Lab., Yale
Univ., New Haven, Conn., U.S.A.

TROMBETTA, P. Dr — 1st. di Zool. e Anat., comp., Fac. di Sci.,
Via Celoria 10, Milano, Italia.

TRUSLOVE, G. M. B.Sc. — Dep. of Zool., Univ. Coll. London,
Gower Str., London W.C. 1, England.

TSCHUMI, P. — Abt. fur Zoophysiol. des Zool. Inst, der Univ.,
Sahlistr. 8, Bern, Schweiz. 'TSENG, Miss M. P. B.S. — Dep. of Zool., Coll. of Sci., Nat. Univ.

of Peking, Ching Shan Tung Chieh, Peiping, China, Asia. TUCKER, Gordon H. Prof. — San Diego State College, San Diego,

Cal., U.S.A. TUNG. T. C. Dr, Prof. — Osborn Zool. Lab., Yale Univ., New

Haven, Conn., U.S.A. TWITTY, V. C. Dr, Prof. — Dep. of Biol., Stanford Univ., Palo

Alto, Cal., U.S.A. TYLER, A. Prof. — W. G. Kerckhoff Lab. of the Biol. Sci., Calif.

Inst, of Technology, Pasadena 4, Cal., U.S.A.

TYLER, D. B. A.B., B.A., Ph.D., Prof. — Dep. of Embryol., Carnegie Inst, of Washington, Baltimore 5, Md, U.S.A.
UBISCH, L. v. Dr jur. et phil., Prof. (Emer.) — Paradis, Norge.
UMANSKI, E. Dr, Prof. — Zoo-Biol. Inst, of the State Univ.,

Kharkov, U.S.S.R.

URBANI, E. Dott. — 1st. di Anat. comp., Univ. di Roma, Via Borelli
50, Roma, Italia.

URBANI-MISTRUZZI, Signora L. Dott. — 1st. di Anat. comp.,
Univ. di Roma, Via Borelli 50, Roma, Italia.

VACEK, Z. MUC — Embryol. ustav univ. Karlovy, Praha II,
Albertov 4, Czechoslowakia.

VACHON, M. Dr — Lab. de Zool. du Museum National de Paris,
61, Rue de Buffon, Paris Vc, France.

VANDEBROEK, G. Dr So, Prof. — Lab. d'Embryol., Fac. des Sci.,
71, Rue de Namur, Louvain, Belgique. VANDEL, A. Prof. — Lab. de Zool., Fac. des Sci., Toulouse,

France.

VANNINI, E. Dr, Lib. doc. — 1st. di Zool. e Anat. comp., Fac. di
Sci., Via Loredan 6. Padova, Italia.

VASSEUR, E. J. E. Ph.lic. — Wenner-Grens Inst, for exper. Biol.,
Norrtullsgatan 16, Stockholm, Sweden.

VERMAAK, D. B.Sc. — Sool. Inst., Univ. v. Stellenbosch, Stellenbosch, Suid Afrika.
VILLAFRANCA. G. de Grad.stud. — Osborn Zool. Lab., Yale
Univ., New Haven, Conn., U.S.A.

VINTEMBERGER, P. Dr Med., Prof. — Inst. d'Embryol. et de
Morphol. exper., Fac. de Med., 97, Alice de la Robertsau,

Strasbourg, (Bas-Rhin), France.

VITAGLIANO, G. Dr Sc. — 1st. di Genet., Via Mezzocannone 8,
Napoli, Italia.

VOGT, Frl. M. Dr Med. — Inst. f. Hirnforschung, Neustadt,
Schwarzwald, Deutschland.

WADDINGTON, C. H. F.R.S.; M.A., Sc.D., Prof. — Inst, of
Anim. Genet., West Mains Rd, King's Buildings, Edinburgh 9,

U.K.

WANG, Y. T. B.S. — Dep. of Zool., Coll. of Sci., Nat. Univ. of
Peking, Ching Shan Tung Chieh, Peiping, China, Asia.

WARD, Miss M. Ph.D., Prof. — Univ. of Tennessee, Coll. of Med.,
Memphis 3, Tenn., U.S.A.

WEBER, A. Prof. (Emer.) — Lab. de Neurohistol., Inst. d'Anat.,
Ecole de Med., 20, Rue de l'ficole de Med., Geneve, Suisse.

WEDIN, B. Dr — Zool. Inst., Lunds Univ., Lund, Sweden.
WEGLARSKA, B. — Zool. Dep. of the Jagellonian Univ., Krakow,
St Anne 6, Poland. WEISS, P. Dr, Prof. — Zool. Lab., Univ. of Chicago, Chicago 37,

111., U.S.A. WEISSENBERG, J. R. Dr, Prof. — Brandeis Univ., 54, Orange

St, Waltham 54, Mass., U.S.A.

WEISZ, P. B. B.Sc, M.Sc, Ph.D., Prof. — Dep. of Biol., Brown
Univ., Providence, R.I., U.S.A.

WEL, W. H. v. d. Dr Med. — Anat.-Embryol. Lab. der Rijks Univ.,
Boerhaavekwartier, Wassenaarseweg, Leiden, Holland.

WELLS, L. J. Ph.D., Prof. — Inst, of Anat., Univ. of Minnesota,
Minneapolis 14, Minn., U.S.A.

WENGER E. L. Ph.D., Prof. — Washington Univ., Lindell and
Skinker Aves., St Louis 5, Mo., U.S.A. ♦WESTHUIZEN, C. M. v. d. M.Sc. — Sool. Inst., Univ. Stellenbosch, Stellenbosch, Suid Afrika. WHITAKER, D. Dr, Prof. — Stanford Univ., Palo Alto, Cal.,

U.S.A.

WHITELEY, A. H. Ph.D., Prof. — Dep. of Zool., Univ. of
Washington, Seattle 5, Wash., U.S.A.

WICKLUND, E, Ph. lie. — Wenner-Grens Inst, for ex. Biol.,
Norrtullsgatan 16, Stockholm, Sweden.

WILENS, S. A.B., Prof. — Osborn Zool. Lab.. Yale Univ., New
Haven, Conn., U.S.A. 'WILLIAMS, R. G. A.B., M.A., M.D., Prof. — Dep. of Anat., Schooi

of Med., Univ. of Pennsylvania, Philadelphia 4, Pa, U.S.A.


WILLIAMS. S. C. B.S., Ph.D.. Prof. - Dcp. of Anat.. Univ. of

Pennsylvania. School of Med.. Philadelphia 4, Pa, U.S.A. •WILLIAMS. T. W. B.S.. M.S.. Ph.D., Prof. — School of Med..

West Virginia Univ., Morgantown, W. Va., U.S.A.

WILLIER. B. H. D.Sc. Ph.D., Prof. — Dep. of Biol., The John
Hopkins Univ., Charles and 34th Sts, Baltimore 18, Md. U.S.A.

WILSON, J. W. Ph.D., Prof. — Arnold Biol. Lab.. Brown Univ.,
Providence 12, R.I., U.S.A.

WINBLAD, J. A.B., Prof. -— Med. Anat., Univ. of Kansas,
Lawrence, Kan.. U.S.A. 'WINDLE, W. F. Sc.D., B.S., M.S., Ph.D., Prof. — Dep. of Anat..

Univ. of Pennsylvania, School of Med., Philadelphia 4, Pa.

U.S.A. WINIWARTER, H. de Dr, Prof. — Inst. d'Anat., Liege, Belgique.

WINOWSKA, Mrs. K. W. M.Sc. — Zaklad Anat. Porownawczej
Inst. Zool. Uniw., Ul. Sienkiewicza 21, Wroclaw, Polska

(Poland).

WISKONT, H. — Inst, of Histol. and Embryol., Med. Acad., Gdansk,
Poland.

WISLOCKI, G. B. M.D., A.M., Prof. — Dep. of Anat., Harvard
Med. School, 25, Shattuck Str., Boston 15, Mass., U.S.A.

WITSCHI, E. Ph.D., Prof. — State Univ. of Iowa, Iowa City, Iowa,
U.S.A.

WITTEK, Mile M. — Lab. d'Anat. hum. et d'Embryol., 97, Rue aux
Laines, Bruxelles, Belgique.

WOERDEMAN, M. W. M.D., Prof. — Anat.-Embryol. Inst., Rijks
Univ. van Amsterdam, Mauritskade 61, Amsterdam, Holland.

WOLFF, Madame Em. Lie. es Sc. — Lab. d'Embryol. et Teratol.
exp. de l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen.,

12, Rue de l'Univ., Strasbourg, France.

WOLFF, Et. Dr es Sc, Prof. — Lab. d'Embryol. et Teratol. exp.
de l'Univ. et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12,

Rue de l'Univ., Strasbourg, France.

WOODGER, J. H. D.Sc, Prof. — Med. School, Middlesex Hosp.,
London W. 3, England. WORONZOWA, M. A. Dr — Inst, fur exper. Morphogen..

Moskau, U.S.S.R.

WSZELACZYNSKA, M. Agr. Ing. — Inst, of Histol. and Embryol..
Med. Academy, Gdansk, Poland.

YAO, T. B.Sc, Ph.D. stud. — Inst, of Anim. Genet., West Mains
Rd, Edinburgh 9, U.K. YCAS, M. Grad.stud. — Kerckhoff Lab. of Biol., California Inst, of

Technol., Pasadena 4, Cal., U.S.A.

YNTEMA, C. L. Ph.D., Prof. — Dep. of Anat.. Syracuse Univ..
Syracuse, N.Y., U.S.A.

ZAAIJER, Mej. J. J. P. Biol, dra — Histol. Lab.. Boerhaavekwartier,
Leiden, Holland. •ZAKARIAS. Z. — Anat.-Embryol. Inst., Med. Fac. Targu-Mures,

Marosvasarhely, Romania.

ZEUTHEN, E. Dr Phil. — Lab. of Zoophysiology, Univ. of Copenhagen, Juliane Mariesvej 32, Copenhagen, 0, Denmark.

ZHINKIN, L. Dr — Inst, of exper. Med., Leningrad, U.S.S.R. ZWEIBAUM, J. — ZaWad Histol. i Embryol., Uniw. Warszawskiego,

Warszawa, Polska (Poland).

ZWILLING, E. Ph.D., Prof. — Univ. of Connecticut, Storrs, Conn.,
u.s.a'.



S. Africa 37 S. America (Perou)

==General List of Institutes==

with Composition of Scientific Staff

(geographical order)

S. AFRICA

Univ. Coll., O.F.S., Dep. of Zool., Bloemfontein. DREYER. T. F. Dir.

DREYER, Miss M. V.
PLETZEN, R. van
Dep. of Zool., Univ. of Cape Town, Rondebosch, Cape Town. DAY, J. H. Dir.

MILLARD, N. A. H. Lect.
SILBERBAUER, Mrs B.
Jr. Lect.

SANDISON, Miss E.
Honor. Res. Asst. Dep. of Zool., Fac. of Sci., Univ. of the Witwatersrand, Milner Park, Johannesburg.

HORST, C. J. van der Dir. * AUSTOKER, Mrs J.
BALINSKY, B. I. Lect.
KNIEP, Mrs M. Lect.
GILBERT, Miss C. Tech. Asst.
Div. of Fisheries, Beach Rd, Sea Point.

BONDE, C. von Dir.
DAVIES, D. H.
Asst. Prof. Officer Inland Fisheries Dep., Jonkershoek, Stellenbosch.

HEY, D. Dir. (no embryol. work in progress)

Zool. Inst., Fac. of Sci., Univ. of Stellenbosch, Stellenbosch.

TOIT C. A. du Dir. * CROMPTON, A. W.

VILLIERS, C. G. S. de Dir. * EEDEN, J. A.

MALAN, M. E. Lect. * PLETZEN, R. van
PRINS, J. X.
VERMAAK, D.
WESTHUIZEN. C. M. v. d.
S. AMERICA

Inst, de Biol, y Med. Exper., Costarica 4185, Buenos Aires, Argentina.

HOUSSAY, B. A. (data not yet received)

Inst, de Zool., Fac. de Ci. Biol., Univ. Nac. de Tucuman, Miguel Lillo 205, Tucuman, Argentien.

CEI, J. M. Dir.
PISANO, A. Asst.
Dep. de Med. Exp., Avenida Irarrazaval 849, Santiago de Chile.

LIPSCHOTZ, A. (no embryol. work in progress)

S. Camilo 303 A., Arequipa, Perou.

TAMINI. Miss E. P. (no embryol. work in progress)



S. America (Urug.) 38 N. America, Ala

Dep. de Histol. y Embriol., Fac. de Med., Montevideo, Uruguay.

BUNO, W. Dir.
FERREIRA, W. A. Asst.
FRANCHI, C. M. Asst.
GONZALEZ MARINO, R.
Asst.

ALVAREZ GUTIERREZ.
Miss J. Asst.

N. AMERICA

CANADA

Dep. of Anat., Fac. of Med., Univ. of Alberta, Edmonton, Alb.

SHANER, R. F. Dir.
Dahlhousie Univ., 28, Chestnut Str., St Halifax, Nova Scotia.

BEAN, Mrs E. S. (data not yet received)

Dep. of Zool., Fac. of Arts and Sci., Mc Master Univ., Hamilton, Ont., Canada. EMERSON WARREN, A. * PEERS, Miss. D. J.

Dir. Lect. at Guelph

Mc CALLION, D. J.
Asst. Prof, at Wolfville Queen's Univ., Med. School, Kingston, Ont.

KROPP, B. N. Dir.
Dep. d'Histol. et d'Embryol., Fac. de Med., Univ. de Montreal, 2900, Boulevard du Mont-Royal, Montreal,

BONIN, W. Dir.
FRAPPIER, J. Asst.
Dep. of Zool., Mc Gill Univ., Montreal, Quebec.

BERRILL, N. J. (data not yet received) Dep. of Anat., Fac. of Med., Univ. of Ottawa, Ottawa.

AUER, J. Dir.
MENSCHIK, Z. Asst. Prof.
Dep. of Histol. and Embryol., Fac. of Med., Univ. of Ottawa, Ottawa.

BfiLANGER, L. F.
Head of Dep. Univ. of Saskatchewan, Fac. of Anat., Saskatoon. JACKSON, G. L. Dir.

ALTSCHUL, R. Assoc. Prof.
U.S.A. ALABAMA (Ala.)

Schools of Med. and Dent., Dep. of Anat., Med. Center of the Univ. of Alabama, 620, South 20th Str., Birmingham 5. FOLEY, J. O. Chairman

SENSENIG, E. C. Assoc. Prof.
KLAPPER, C. E. Asst. Prof.
BOYER. C. C. Asst. Prof.


Cal. 39 S.C.

CALIFORNIA (Cal.)

Dep. of Zool., Coll. of Lett, and Sci., Univ. of California, Berkeley 4.

KIRBY. H. Chairman * KUTSKY, P. B.

LONG. J. A. Prof. (Emer.)

EAKIN, R. M. Assoc. Prof.
BERG, W. E. Asst. Prof.
HARRIS, M. Asst. Prof.
Dep. of Zool., Univ. of California, Los Angeles 24.

SCHECHTMAN, A. M.
Assoc. Prof.

NACE, G. W.
Fellow Nat. Inst, of Health

SCHJEIDE. O. A.
DAGG, C. P. Teaching Asst.
Dep. of Biol.. Stanford Univ., Palo Alto.

TWITTY, V. C. (data not yet received)

W. G. Kerckhoff Lab. of the Biol. Sci., Calif. Inst, of Technology, Pasadena 4.

TYLER, A. (data not yet received) San Diego State Coll., San Diego.

TUCKER, G. H. (data not yet received)



N-CAROLINA (N.C.)

Dep. of Anat., Univ. of N. Carol., Chapel Hill.

GEORGE, W. C. (no embryol. work in progress) Dep. of Zool., Univ. of North Carolina, Chnpel Hill.

COSTELLO, D. P. Chairman
of Dep. and Kenan Prof.

LEHMAN, H. E. Asst. Prof.
HENLEY, C. Res. Asst.
Zool. Dep., Duke Univ., Durham.

GRAY, I. E. Dir. * RHODES, S.

HARGITT, G. T. Prof. PEARSE, A. S. Prof. (Emer.)

BOOKHOUT, C. G.
Assoc. Prof.

HORN, E. C. Asst. Prof.
JOHNSON, M. W. Asst. Prof.





SCAROLINA (S.C.)

Dep. of Biol.. Coll. of Charleston, Charleston 10.

CLEMENT, A. C. (data not yet received)



Col. 40 111.

COLORADO (Col.)

Lab. of chem. Embryol., Med. Center, Colorado Univ., Denver 7.

HERRMANN, H. Dir.
COHEN, S.


CONNECTICUT (Conn.)

Shanklin Lab. of Biol., Dep. of Biol., Wesleyan Univ., Middletown.

GOODRICH, H. B. Dir.
CASPARI, E. W. Prof.

Osborn Zool. Lab., Yale Univ., New Haven.

NICHOLAS, J. S. Dir. * GILMARTIN, Miss R.
HARRISON, R. G. * NOEL, Miss E.
Prof. (Emer.) * RUDNICK, Miss D.

BOELL, E. J. Prof. * SIPPEL, Miss T.
STONE, L. S. Prof. * VILLAFRANCA, G. de
POULSON, D. F. Assoc. Prof.
METZ, C. B. Asst. Prof.
SHEN, S. C. Res. Asst.
REYER, R. W. Instr.
TRINKAUS, J. P. Instr.
WILENS, S. Res. Asst.
KRUGELIS, E. L. Res. Asst.
Sterling Hall of Med., Yale Univ., 333, Cedar Str., New Haven 11.

BURR, H. S. (data not yet received)

Dep. of Genet., Coll. of Agric, Univ. of Connecticut, Storrs Agric. Exper. Stat., Storrs.

LANDAUER, W. Dir.
ZWILLING, E. Assoc. Prof.
Dep. of Zool., Univ. of Connecticut, Storrs.

CLARK, H.


ILLINOIS (111.)

Dep. of Anat., Med. School, North Western Univ., 303, Last Chicago Ave, Chicago.

AREY, L. B. (data not yet received) Dep. of Physiol., Univ. of Chicago, Chicago.

LILLIE, R. S. (data not yet received) Hull Anat. Lab., Univ. of Chicago, Chicago 37.

BARTELMEZ, G. W. (data not yet received) Zool. Lab., Univ. of Chicago, Chicago 37.

WEISS. P. (data not yet received) 318, Nat. Hist. Building, Univ. of 111., Urbana.

CLEAVE, H. J. van (data not yet received)



Ind. 41 Md

INDIANIA (Ind.)

Dep. of Biol., Univ. of Notre Dame, Notre Dame.

DELANNEY, L. E. (data not yet received)

IOWA

Dep. of Zool. and Entomol., Fac. of Sci. ( Iowa State Coll., Ames.

HARRIS, H. M. Head of Dep.
HAMILTON, H. L. Assoc. Prof.
Dep. of Zool., State Univ. of Iowa, Iowa City.

WITSCHI, E. Dir.
CHANG. C. Y. Res. Asst.
KANSAS (Kan.)

Dep. of Anat., Univ. of Kansas. Lawrence.

ROOFE, P. G. Dir. * CORDER. R.
TRACY, H. C. Prof.
LATIMER, H. B. Prof.
WINBLAD, J. N. Instr.
BATTY, T. V. Asst. Instr.
LEE, G. M. Asst. Instr.
Dep. of Zool., Univ. of Kansas, Lawrence.

HALL, R. E. (data not yet received)

KENTUCKY (Ky.)

Dep. of Anat., School of Med., Univ.of Louisville, 101, West Chestnut Str., Louisville 2.

HALL, E. K. Dir.
MAINE (Me.)

Roscoe B. Jackson Memorial Lab., Box 558, Bar Harbor.

LITTLE, C. C. Dir. * AVIS, F.
RUSSEL, Miss E. S. * DIETZ, D.
Res. Assoc. * FEKETE, E.

HUMMEL, Miss K. P.
Res. Assoc.

SAWIN, P. B. Res. Assoc.
RUNNER, M. N. Res. Assoc.
MARYLAND (Md)

Dep. of Biol., The Johns Hopkins Univ., Charles and 34th Strs, Baltimore 18.

WILLIER, B. H. Dir. * STRAUSS Jr., W. L.
BURNS, R. K. Hon. Prof.
RAWLES, Miss M. E.
Res. Assoc.

SPRATT, N. T. Asst. Prof.
EBERT, J. D. Bruce Fellow
CASE, J. F. Jr Instr.


Md 42 Mich.

Dep. of Embryol., Carnegie Inst, of Washington, Wolfe and Madison Strs, Baltimore 5.

CORNER, G. W. Dir.
BURNS, R. K. Prof.
FLEXNER, L. B. Prof.
HEUSER, C. H. Curator
REYNOLDS, S. R. M. Prof.
TYLER, D. B. Assoc.
RAMSEY, Miss E.
Volunt. Assoc.

HERTIG, A. T.
Res. Assoc, (extramural)

GILLMAN, J.
Res. Assoc, (extramural) Nat. Cancer Inst., Bethesda.

GROBSTEIN, C.
MASSACHUSETTS (Mass.)

Dep. of Biol., Amherst Coll., Amherst.

SCHOTTE, O. E. (data not yet received) Boston Lying-in Hosp., 221, Longwood Ave, Boston 15.

HERTIG, A. T. Res. Assoc.
Dep. of Anat., Harvard Med. School, 25, Shattuck Str., Boston 15.

WISLOCKI, G. B. Dir. * LEWIS, F. T. Prof. (Emer.)
SNYDER, F. F. Assoc. Prof.
SINGER, M. Asst. Prof.
Leveratt House, Harvard Univ., Cambridge.

HOADLEY, L. (data not yet received) Mount Holyoke Coll., S. Hadley.

ADAMS, Miss A. E. (data not yet received) Dep. of Zool., Smith Coll., Northamton.

ROSE, S. M. (data not yet received)

Tufts Coll., Med. School and Worcester Foundation for Exper. Biol., 222, Maple Ave., Shrewsbury.

PINCUS, G. (data not yet received) Brandeis Univ., 54, Orange Str., Waltham 54.

WEISSENBERG, J. R. (data not yet received) Marine Biol. Lab., Woods Hole.

CHAMBERS, R. Dir.

SHAPIRO, H.
MICHIGAN (Mich.)

Dep. of Anat., Med. School, Univ. of Mich., 2500 East Med. Bldg.. Ann Arbor.

PATTEN, B. M. (data not yet received)



Mich. 43 N.Y. (Ithaca)

Dep. of Zool., Univ. of Michigan. Ann Arbor. ELLIOTH. A. M. Dir.

KEMP, N. E. Instr.
MINNESOTA (Minn.)

Inst, of Anat., School of Med., Univ. of Minnesota, Minneapolis 14.

BOYDEN.E. A. Head of Dep.
WELLS, L. J. Prof.
HARTMANN, T. F. Asst. Prof.
Dep. of Physiol., Div. of Cancer Biol., Univ. of Minnesota, Minneapolis 14.

SPIEGELMAN, S. (data not yet received) Dep. of Zool., Univ. of Minnesota, Minneapolis 14.

MINNICH, D. E. Chairman

SPRATT, N. T. Assoc. Prof.
MISSOURI (Miss.)

Free Hosp. for Women, 245 Pond Ave, Brooklyn.

HERTIG. A. T. Prof.
Coll. of Lib. Arts, Grad. School of Arts and Sci., Washington Univ., Lindell and Skinker Aves, St. Louis 5.

HAMBURGER. V.
Head of Dep.

HALL, T. S. Assoc. Prof.
MOOG. F. Asst. Prof.
LEVI-MONTALCINI, R.
Res. Assoc.

WENGER, E. Res. Asst.
NEW JERSEY (N.J.).

Dep. of anim. and plant Pathol., Rockefeller Inst, for Med. Res.,

Princeton.

GRAHAM, G. L. (data not yet received) Dep. of Biol., Princeton Univ., Princeton.

FANKHAUSER, G. Dir.
BUTLER. E. G. Prof.
HARVEY, Mrs. E. B. Prof.
Ortho Res. Foundation, Raritan.

HARTMAN, C. G. Dir. (no embryol. work in progress)

NEW YORK (N.Y.).

Dep. of Anat., School of Med., Univ. of Buffalo. 24, High Str., Buffalo.

HUMPHREY, R. R. Dir.
Dep. of Pathol., Long Island Coll. of Med.. 335, Henry Str., Brooklyn 2, N.Y.

GRUENWALD, P. Dir.
Dep. of Zool., Cornell Univ., Ithaca.

ADELMANN. H. B. (data not yet received)



New York 44 Ohio (Columbus)

Washington Square Coll, New York Univ., Washington Square, New York 3.

CHAMBERS, R. Prof. (Emer.) (data not yet received)

Dep. of Histol., Coll. of Dentistry, New York Univ., 477 ', First Ave., New York 16.

GOLDSMITH, E. D. (data not yet received)

Dep. of Biol., Yeshiva Univ., 186th Str. and Amsterdam Ave, New York 33.

ATLAS, M. Dir.
Carnegie Inst, of Washington, Dep. of Genet., Cold Spring Harbor, Long Island, New York.

CASPARI, E. Dir.
DALTON, H. C.
Queen's Coll., Dep. of Biol., Flushing, L.I., New York.

COLWIN, A. L. Dir.
COLWIN, Miss L. H.
Dep. of Anat., Coll. of Phys. and Surg., Columbia Univ., 630, West 168th Str. New York City.

DETWILER, S. R. (data not yet received) Dep. of Zool., Columbia Univ., New York City 27.

BARTH, L. G. Dir.
GREGG, J. R.
Dep. of Biol., Coll. of Arts and Sci., Univ. of Rochester, Rochester 3. CHARLES, D. R. Dir. * STEVENS, L. C.

HOLTFRETER, J. K. F. Prof. * TOWNES, Ph. L.
LUMB, Miss E. S.

Instr. in Embryol. Dep. of Biol., Union Coll., Schenectady.

CLARK, L. B. (data not yet received) Dep. of Anat., Fac. of Med., Med. Coll., Syracuse Univ., Syracuse 10.

ARMSTRONG, P. B.
Chairman

YNTEMA, C. L. Assoc. Prof.
HAMMOND. W. S.
Asst. Prof.

OHIO.

Western Reserve Univ., 2109, Adelbert Road, Cleveland.

CHASE, S. W. (data not yet received) Dep. of Anat., Ohio State Univ., Columbus 10.

KNOUFF. R. A.
Chairman of Dep.

BAKER, R. C. Prof.
EDWARDS, L. F. Prof.
GARRETT, F. D. Asst. Prof.
LEACH. W. J. Asst. Prof.


Ohio (Columbus) 45 Pa.

HAYES, E. R. Asst. Prof.
SHELLHAMER, R. H.
Grad. Asst. Oberlin Coll., Oberlin.

HIBBARD. H. (data not yet received)

OREGON (Ore.)

Dep. of Biol., Lib. Arts and Grad. Coll., Univ. of Oregon, Eugene.

RISLEY, P. L. Head of Dep.
HUESTIS, R. R. Prof.
CLANCY, C. W. Assoc. Prof.
SODERWALL, A. L.
Asst. Prof. Dep. of Biol., Univ. of Portland, Portland 3.

MOORE, A. R. Dir.
Lewis and Clark Coll., Portland.

GILCHRIST, F. G. (data not yet received)

PENNSYLVANIA (Pa.)

Dep. of Biol., Bryn Mawr Coll., Bryn Mawr.

OPPENHEIMER, J. M. (data not yet received) Dep. of Anat., School of Med., Univ. of Pennsylvania, Philadelphia 4.

WINDLE, W. F. Chairman
CLARK, E. R. Prof.
WILLIAMS, R. G. Prof.
HOGUE, Miss M. J.
Assoc. Prof.

PIATT, J. Asst. Prof.
CHAMBERS, W. W.
Asst. Prof.

SIEKERT, R. G. Instr.
LIU, J. C. Instr.
DUANE Jr, Wm. Instr.

SINHA, T. P. Fellow
LAVELLE, A. Asst. Instr.
WILLIAMS, S. C. Asst. Prof.
Dep. of Zool., Univ. of Pennsylvania, Philadelphia 4.

HEILBRUNN, L. V. Dir.
FLICKINGER, R. A.
NELSEN, O. E.
PARMENTER, C. L.
Wistar Inst., 36th Str. and Woodland Ave, Philadelphia 4.

KING, Miss H. D. (data not yet received) Ladd Lab., Dep. of Anat., Univ. of Pa., School of Med., Pittsburg 15.

HOOKER, D. (data not yet received) Univ. of Pittsburgh, Pittsburgh.

GRAY, P. (data not yet received)



R.I. 46 Vt.

RHODE ISLAND (R.I.)

Arnold Biol. Lab., Brown Univ., Providence 12.

WILSON, J. W. Dir. * ANDERSON, Mis I. L.
CHASE, H. B. Assoc. Prof.
EDDS Jr, M. V. Asst. Prof.
LEDUC, E. H. Res. Assoc.
WEISZ, P. B. Asst. Prof.
TENNESSEE (Tenn.)

Med. Div., Fac. of Biol. Sci., Univ. of Tennessee, Memphis 3. HARRISON, F. Chief of

Div. of Anat.

ALDEN, R. H. Head of
Dep. of Microsc. Anat.

FITZGERALD, L. R. Instr.
WARD, Miss M. Instr.
Dep. of Anat., Vanderbilt University, Nashville.

CLARK, S. L. (no embryol. work in progress)

TEXAS (Tex.)

Dep. of ZooL, Coll. of Arts and Sci., Univ. of Texas, Austin 12. OLIVER, C. P. Chairman

CAIRNS, J. M. Asst. Prof.
Dep. of Anat., Med. Branch, Univ. of Texas, Galveston. DUNCAN, D. Dir.

SINCLAIR, J. G. Prof.
BLOUNT, R. Prof.
Dep. of Anat., Fac. of Med., Baylor Univ., 1200 M. D. Anderson Blvd, Texas Med. Center, Houston 5.

ROBERTSON, G. G.
Assoc. Prof., Head of Dep.

PERRY, J. H. Assoc. Prof.
NEWTON, B. L. Asst. Prof.
HETTIG, R. A. Asst. Prof.
VIRGINIA (Va.)

Dep. of Anat., Med. Coll., Univ. of Virginia, Charlottesville.

SPEIDEL, C. C. (data not yet received)

School of Med., West Virginia Univ., Morgantown.

DODDS, G. S. Dir.
CHANDLER, S. B. Prof.
WILLIAMS, T. W. Prof.
Dep. of Biol., Univ. of Virginia, University.

REYNOLDS, B. D. (data not yet received)

VERMONT (Vt.)

Dep. of Anat., Coll. of Med., Univ. of Vermont, Burlington.

NEWHALL, C. Chairman * NOVIKOFF, A. B.
Assoc. Prof.

JORDAN, H. Prof.
DUNIHUE, F. Assoc. Prof.

STULTZ, W. Assoc. Prof.


Wash., Australia 47 Asia (China)

WASHINGTON (Wash.).

Dep. of Zool., Univ. of Washington. Seatlle 5. MARTIN. A. W. Dir.

FERNALD. R. L.
WHITELEY. A. H.
Dep. of Biol., Gonzaga Univ., Spokane 11. FOUBERT Jr. E. L. Dir.

GUBBINS, J. F. (S.J.)
Asst. Prof.

WISCONSIN (Wis.).

Dep. of Zool., Univ. of Washington, Seatlle 5. SULLIVAN, W. E. Chairman * STRAUSS. F.

BAST, T. H. Prof.
MOSSMAN, H. W.
Assoc. Prof. Dep. of Zool., Marquette Univ., Milwaukee 3.

SAUNDERS, J. W. (data not yet received)

AUSTRALIA

Dep. of Embryol. and Histol., Univ. of Sydney, Sydney, N.S.W. Australia.

STUMP, W. (data not yet received) Dep. of Zool., Univ. of Sydney, Sydney, N.S.W. Australia.

MURRAY, P. D. F. Dir.
Auckland Univ. Coll., New Zealand.

STEPHENSON, N. G.
ASIA

Dep. of Biol., Nat. Chekiang Univ., Hangchow, China.

PAI, S. (data not yet received) Biol. Dep., Nat. Tsinghwa Univ., Peking, China.

CHEN, S. C. (SHEN, S. C.)? (data not yet received)

Dep. of Zool., Coll. of Sci., Nat. Univ. of Peking, Ching Shan Tung Chieh, Peiping, China.

CHUANG HSIAO-HUI Dir.
LI, J, C. Prof.

TSENG, Miss M. P. Asst.
WANG, Y. T. Asst.
LIAO, Y. K. Asst.
LI, Miss S. C. Asst.
Dep. of Zool., Univ. of Shantung, Tsingtao, China.

TUNG, T. C.

HUANG, A. C. (data not yet received)



A s j a 48 Czecho-Slowakia

Dep. of Anat., Med. Fac, Univ. of Ceylon, Kynscy Rd, Colombo 8, Ceylon.

CHANMUGAM, P. K. Dir.
Krishna Lodge, Karol Bagh, Delhi, Indien.

POLITZER, G. (data not yet received)

EUROPE

BELGIUM.

Lab. d'Anat. et d'Embryol.. Fac. de Med. de l'Univ., 97, Rue aux Laines, Bruxelles.

DALCQ, A. M. Head of Dep. * PANIJEL, J.
PASTEELS, J. Prof. * WITTEK, Mile M.
MULNARD, J. Asst.
Lab. d'Histol., 97, Rue aux Laines, Bruxelles.

GfiRARD, P. Head of Dep. (no embryol. work in progress)

Lab. de Zool., Fac. des Sci., Inst, de Zool. Torley-Rousseau, Univ. libre de Bruxelles, 51. Av. F. D. Roosevelt, Bruxelles.

BRIEN, P. Dir.
HERLANT MEEWIS, Mme H.
Chef de trav. de Zool. Lab. de Morphol. anim., Univ. libre de Bruxelles, 1850, Chaussee de Wavre, (A)Ouderghem, Bruxelles.

BRACHET, J. L. A. Dir. * LALLIER, R. A.
HUGON DE SCOEUX, Mile F.
SHAVER, J. R.
Inst, of Anat., Univ. of Ghent, Fac. of Med., Bylokekaai 1, Ghent.

FAUTREZ J. C. Dir. * FAUTREZ-FIRLEFYN, Mrs.
N. J. P. E.

ANNEZ, Ch.
Inst, de Zool. Ed. Van Beneden, Fac. des Sci., Dep. Morphol. des Chordes, Quai Ed. Van Beneden 22, Liege.

DAMAS, H. F. C.
Charge de cours Lab. d'Embryol., Fac. des Sci., 71, Rue de Namur, Louvain.

VANDEBROEK, G. Dir. * BONfi, E.
CLAES, M. T.
Inst. d'Anat., Univ. de Louvain, 38, Rue des Recollets, Louvain.

CAMPENHOUT, E. van Dir.
JANSSENS, J.
MASY,
MEYER, de
CZECHO-SLOWAKIA.

Embryol. ustav, Med. Fac, Univ. Karlovy, Albertov 4, Praha II.

FRANKENBERGER, Z. Dir.
MAZANEC, K. Asst.
KORNFELD, V. Asst.
VACEK, Z. Asst.


Denmark 49 England (London)

DENMARK.

Carlsberg Lab., Cytochem. Dep., Gl. Carlsbergvej 8, Copenhagen, Valby.

HOLTER, H. Chief of Dep.
GREGG, J. R. Asst. Prof.
L0VTRUP, S. Asst.
Overlaege ved Kommunehosp., neurol. afd., Dronnings Tvaergade 6 2 Copenhagen.

KRABBE, K. H. Prof.
Lab. of Zoophysiol., Nat. Sci. Fac, Univ. of Copenhagen, Juliane Mariesvej 32, Copenhagen p. BRANDT REHBERG, P.

Head of Dep.

ZEUTHEN, E. Lect.
Inst, for Aim. Zool., Universitetsparken 3, Copenhagen.

BR0NDSTED. H. V. Dir.
HOLST CHRISTENSEN, P.
Ammanuensis

OVERGAARD, C. Asst.
ENGLAND.

Wye Coll., Univ. of London, Ashford, Kent.

FROUD, M. D.
Dep. of Zool., Gonville and Caius Coll., Downing str., Cambridge.

GOODHART, C. B.
Dep. of Biol., Med. Coll. of St. Barthol, Hosp., Charterhouse Sq., London E.C. 1.

HALE, L. J.
Dep. of Anat. and Embryol., Fac. of Med. and Sci., Univ. Coll. London, Gower Str., London W.C. 1.

BEER, G. R. de Dir. * AMOROSO, E. C.
HILL J. P. Prof. (Emer.) * GRONEBERG, H.
ABERCROMBIE, M. Lect * MORGAN, Miss M. R.
FORD. P. Asst. Lect. * SINGER, J.
Dep. of Zool., Univ. Coll. London, Gower Str., London W.C. 1. WATSON Dir. FRASER, Miss E. A.

NEWTH, D. R.
TRUSLOVE, G. M.
Min. of Agricult., (Infest. Contr. Div.), 58, High Holborn, London

BARNETT, S. A. W.C. 1.
Charing Cross Hosp., Med. School, Med. Fac, Dep. of Anat., 62 — 65, Chandos Place, London W.C. 2.

HAMILTON, W. J. Dir.
Kings Coll., Strand, London W.C. 2.

MANTON, S. M.
TRIBE, Miss M.
Queen Mary Coll., Fac. of Sci., Univ. of London, Mile End Rd, London E. 1. * AGARWALA. D.

GROVE, A. J. Dir. * DALES, R. P.

NEWELL, G. E. Reader * HEAYSMAN, Miss J. E. M.


England (London) 50 Finland

Anat Dep., London Hosp., Med. Coll., Univ. of London, Turner Str., London E. 1« 

BOYD, J. D. Dir.
BELLAIRS, A. d'A. Lect.
PEACOCK, A. Lect.
Biol. Dep., Guy's Hosp., Med. School, London S.E. 1.

BAXTER, E. W.
St Mary's Hosp., Med. School, London W. 2.

FISK, A.
Middlesex Hosp., Med. School, London W. 3.

WOODGER, J. H.
Westminster Med. School, Horsferry Rd, London S.W. 1.

O'CONNOR, R. J.
Dep. of Zool., Univ., Reading, Berskhire.

EALES, Miss N. B.
Dep. of Zool., Sheffield Univ., Sheffield.

SEDRA, S. N.
Inst, of Anim. Genet., Fac. of Sci., King's Buildings, West Mains Rd, Edinburgh 9, Scotland, U.K.

WADDINGTON, C. H. Dir. * DEUCHAR, E. M.
BEATTY, R. A. * HISLOP, F. M.
Sr Sci. Officer * LYON, M. F.

FALCONER, D. S. * MOOKERJEE, S.
Sr Sci. Officer * YAO, T.

FISCHBERG. M. Res. Grant
FRASER, A. S. Res. Grant
REEVE, E. C. R.
Sr Sci. Officer

ROBERTSON, F. W.
Sr Sci. Officer

CARTER, T. C.
Med. Res. Council

FREEDMAN, R. M.
Res. Asst.

PHILLIPS, R. J. S.
Med. Res. Council

FINLAND.

Dep. of Anat., Fac. of Med., Univ. of Helsinki, Helsinki. PESONEN, N. Head of Dep.

HJELMMAN, G. Prof.
MUSTAKALLIO, M.
Prosector Zool. Lab. of the Univ. of Helsinki, Dep. of Physiol., Fac. of Mathem. and Nat. Sci., P. Rautatiek. 13, Helsinki.

SUOMALAINEN, P. Dir. of * KUUSI, Miss T. Lab., Head of Dep.

TOIVONEN, S. Docent, Asst.
SUOMALAINEN, H. Asst.
Zool. Lab. of the Univ. of Turku, Turku.

PESONEN, S. Docent


France 51 France (Paris)

FRANCE.

Lab. de Bellevue, Centre Nat. de la Recherche Sci., I, Place Arist. Briand, Bellevue.

COMANDON, J. (data not yet received)

Lab. d'Anat. comp. de la Fac. des Sci. de Bordeaux, 12, Auguste Conat, Bordeaux.

AVEL, M. (data not yet received)

Inst. d'Histol., Lyon.

POLICARD, A. (no embryol. work in progress)

Lab. de Zool. gen. de la Fac. des Sci. et Stat, de marine d'Endoume (Marseille), Place Victor Hugo, Marseille.

ABELOOS, M. Dir.
Inst. d'Anat., Fac. de Med., 31, Rue Lionnois, Nancy.

BEAU, A. A. Chaire d'Anat.

norm, et d'Organogenese

COLLIN, R. Chaire d'Histol.

et d'Embryol.

DOLLANDER, A. Charge
d'Enseignement de l'Embryol. Lab. de Zool. du Museum Nat. de Paris, 61, Rue de Buffon, Paris Ve. FAGE, L. Dir.

VACHON, M. Asst.
Lab. de Biol. anim. (P.C.B. section II), Fac. des Sci., Univ. de Paris, 12, Rue Cuvier, Paris Ve.

GALLIEN, L. Dir. du serv. * GODET, R.
DELSOL, M. Asst.
Lab. de Biol. anim. du P.C.B., Fac. des Sci., Univ. de Paris, 12, Rue Cuvier, Paris Ve.

JOST, A. D. Maitre de Confer.
BERGERARD, Mme Y.
Coll. de France, Place Marcelin Bethelot, Paris Ve.

JOLLY, J. (no embryol. work in progress)

Lab. d'Embryol. du Lab. Pasteur de l'lnst. du Radium, 26, Rue d'Ulm, Paris Ve.

RAYNAUD, A. Chef du Lab.
FRILLEY, M.
Chercheur et Physicien Coll. de France, Place Marcelin Berthelot, Paris Ve.

FAURE FREMIET, E. (data not yet received)

Lab. d'Embryol., Fac. de Med., 15, Rue de l'Ecole de Med., Paris Vie.

GIROUD, A. Dir. * GIROUD, P.
DESCLAUX, P. Prof, agrege * MARTINET, M.
BOISSELOT, Mile J.
Lie. es Sci.

LELIEVRE, A. Ancien chef
de travaux d'Histol.

TEYSSEYRE, J.
MORLON, C.
CHATTERJEE, H. Prof. adj. (Calcutta)


France (Paris) 52 Germany (Neustadt)

Lab. d'Evolution des Etres organises, 105, Boulevard Raspail, Paris Vie.

GRASSE, P.

ROSTAND, J. (data not yet received)

Lab. de Zool., Fac. des Sci., Poitiers.

LARAMBERGUE, M. de
Inst. d'Embryol. et de Morphol. exper., Fac. de Med., 97, Allee de la Robertsau, Strasbourg (Bas-Rhin).

BENOIT, J. Dir.
CLAVERT, J. Prof, agrege
VINTEMBERGER, P.
Chef des trav.

STOLL, R. Asst.
ASSENMACHER, I.
Asst. (delegue) Inst, de Zool. et de Biol, gener., Lab. d'Embryol. et Teratol. exper. de l'Univ. et du C.N.R.S., Fac. des Sci., 12, Rue de l'Univ., Strasbourg.

WOLFF, E. C. Dir. * WOLFF, Mme E.
LUTZ, H. Chef de Trav. * HUBER, W.
DUBOIS, Mile F. * STRUDEL, G.
Attach, de rech. * SALZGEBER, Mile B.

STEPHAN, F. Asst. * OSTERTAG, Mile Y.
SCHUE, Mile M. Seer. Scient. * HAMPfi. A.
LENDER, T.
HAY, Mile D.
PFLEGER, Mile D.
BRINI, A.
Univ. de Strasbourg, Strasbourg.

BOUNOURE, L. (data not yet received) Lab. de Zool., Fac. des Sci., Toulouse.

VANDEL, A. (data not yet received)

GERMANY.

Dr Senckenbergisches Anat. Inst., Med. Fac. der Univ. Frankfurt/Main, Ludwig Rehnstr. 14, Frankfurt/Main Sud.

STARCK, D. kom. Dir.
FRICK, H. Asst.
Zool. Inst, der Univ. Gottingen, Mathem.-Naturw. Fak., Gottingen.

HENKE, K. Dir.
PIEPHO, H. wiss. Asst.
Inst. f. Entw.-physiol., Phil. Fak., Kerpenerstr. 13, Koln-LindenthaL Rheinland.

ROTMANN, E. Dir.
HARTWIG, H. Asst.
ENGLANDER, H. Asst.
Zool. Inst, der Westf. Landes-Univ., Robert Koch Str. 31, Munster, Westf.

HARDE, Asst.
Inst. f. Hirnforschung, Neustadt, Schwarzwald.

VOGT, Frl. M.


Germany (Tubingen) 53 Italy (Firenze)

Zool. Inst, der Univ. Tubingen, Mathem.-Naturw. Fak., Holderlinstr., 12, Tubingen, Wiirttemberg.

KUHN, A. Dir. * KAUDEWITZ, F.
RISLER, H. Asst. * REHM, Frl. M.
SCHWINCK, Frl. I.
Zool. Inst, der Univ. Wiirzburg. Naturw. Fak., Rontgenring 10, Wiirzburg.

PENNERS, A. Inst.-vorstand * HUBL, H.
GOSZWALD, K. Abt.-leiter * SCHMIRLER, H.
KLOFT, W. Asst.
STICH, H. Asst.


HUNGARY.

Anat. and Biol. Inst, of the Med. Fac. of the Univ. of Debrecen, Debrecen.

TORS, I. Dir. * BARKA. T.
POSALAKY, Z.
Pecsi Tudomanyegyetem, Anat. Intezet, Dischka Gyozo-u. 5. Pecs.

SZENTAGOTHAI, J.
Head of Dep.

GOMoRY, A. 1. Asst.
RAJKOVITS, C.
Res. Fell. Asp. Szegedi Tudomanyegyetem Bonctani, Szovetes Fejlodestani Intezete, Szeged. GELLfiRT, A. Dir.

NAGY, I. Tutor
SAVAY, Gy. Asst.
BEREK, L. Demonstr.
Magyar Biologiai Kutatointezet, Tihany. HORVATH, J. Dir.

FABIAN, G. Priv. Doc.
ENTZ, B.


ITALY.

1st. di Anat. comp., Fac. di Sci., Via Belmeloro 8, Bologna.

PASQUINI, P. Dir.
LEGHISSA, S. Asst.
RAUNICH, L. Asst.
BARBASETTI, M. A. Techn.
1st. di Istol. e Fisiol. gen., Fac. di Med., Via Belmeloro 8, Bologna.

OLIVO, O. M. Dir. * ALOISI. Miss G.
RIZZOLI, C. Asst.
1st. di Zool., Univ. di Stato. Viale S. Bartolomeo. Cagliari, Sardegna.

STEFANELLI, A. Dir.
BAFFONI. G. Asst.
THERMES, G. Asst.
1st. di Anat. comp., Via Romana 17, Firenze.

BECCARI, N. Dir. (no embryol. work in progress)



Italy (Milano) 54 Italy (Siena)

1st. di Genet., Fac. di Sci., Univ. di Milano, Via Celoria 10, Milano.

BARIGOZZI, C. Dir.
CASTIGLIONI, M. C. Asst.
1st. di Zool. e Anat. comp., Fac. di Sci., Univ. di Milano, Via Celoria 10, Milano.

RANZI, S. Dir. * CITTERIO, P.
SCHREIBER, B. Asst. * CIGADA, M.
ORLANDI, A. Asst.
TROMBETTA. P. Asst.
1st. di Anat. umana norm., Fac. di Med. e Chir. dell'Univ. di Milano, Via Mangiagalli 3L, Milano. BRUNI, A. C. Dir.

PRETO PARVIS, V. Asst.
FUMAGALLI, Z. Asst.
1st. di Genet. dell'Univ. di Napoli, Fac. di Sci., Via Mezzocannone 8, Napoli.

MONTALENTI, G. Dir.
VITAGLIANO, G. Asst.
NICOLA, M. de Res. Asst.
SARA'. M. Res. Asst.
BATTAGLIA, B. Res. Asst.
Zool. Stat., Napoli.

DOHRN, R. Dir. * MONROY-ODDO, A.

MONROY, A. Head af the
Physiol. Dep.

GHIRETTI, F. Asst.
1st. d'Istol., Univ. di Padova, Via A. Gabelli, Padova.

BUCCIANTE, L. (data not yet received)

1st. di Zool. e Anat. comp. dell'Univ., Fac. di Sci., Via Loredan 6. Padova.

D'ANCONA, U. Dir.
VANNINI, E. 1. Asst.
COLOMBO, G. Asst.
1st. di Zool., Fac. di Nat. Sci., Via Archirafi 18, Palermo.

REVERBERI, G. Dir.
MINGANTI, A. Asst.
1st. di Biol, e Zool. gen., Perugia.

SPIRITO, A. (data not yet received)

1st. di Zool. e Anat. comp. dell'Univ., Fac. di Sci., Via A. Volta 4, Pisa.

BENAZZI, M. Dir. * LENTATI, Miss G.
LEPORI, N. G. Asst.
PAPI, F. Asst.
1st. di Anat. comp. dell'Univ. di Roma, Fac. di Sci., Via Borelli 50, Roma.

COTRONEI, G. Dir.
PERRI, T. Asst.
URBANI-MISTRUZZI,
Signora L. Asst.

URBANI, E. Asst.
1st. di Biol, e Zool. gen., Fac. di Med., Piazza S. Agostino 4, Siena.

PADOA, E. Dir.
PISANO. A. Asst.


Italy (Torino) 55 Netherlands (Leiden)

1st. di Anat. umana, Fac. di Med., Corso M. D'Azeglio 52, Torino.

AMPRINO, R. Dir.
LEVI. G. Ancient Dir.
GODINA. G. Prof.
FILOGAMO, G. Asst.
BRUNETTI, G. M. Asst.
LATVIA (Lettland).

Vergl. Anat. und exper. Zool. Inst, der Univ., Albeta iela 10, Riga.

LEBEDINSKY. N. G. (data not yet received)

NETHERLANDS (Holland).

Anat. Embryol. Inst, of the Univ. of Amsterdam, Fac. of Med., 61. Mauritskade, Amsterdam O.

WOERDEMANN, M. W.
Dir.

TRAMPUSCH, H. A. L.
Chief Asst., Lect.

CATE, G. ten Chief Asst.
HUYBERS, Miss M. M. Asst.
LANGMAN, J. 2nd Asst.
Zool. Lab., Univ. of Amsterdam, 44, Plantage Doklaan, Amsterdam. IHLE, J. E. W. Dir.

STELT, v. d.
Dep. of Anat. and Embryol., Fac. of Med., Univ. of Groningen, 69. Oostersingel, Groningen.

ARIeNS KAPPERS, J. Dir.
BIJTEL, Miss J. H. Lect.
MOLL, J. Prosector
LANGEVOORT, H. L.
Chief Asst.

DAM, L. van Asst.
BANGMA, P. Asst.
Zool. Lab. of the Univ. of Groningen, Reitemakersrijge, Groningen.

BAERENDS, G. P. Dir.
Anat. -Embryol. Lab. of the Univ. of Leyden, Fac. of Med.. Boerhaavekwartier, Wassenaarseweg, Leiden.

DANKMEIJER, J. Dir. * SNELLEN, H. A.
ODE, Miss E. Prosect.

DEKKER, Miss A. Asst.
BOUR, J. W. H. Asst.
WEL, W. H. van der Asst.
KERKHOF, Miss A. M.
Oud-Prosector

LUYENDIJK, W. Oud-Asst.
BAX, W. A. Oud-Asst.
HEYN, C. B. Oud-Asst.
ELSHOUT, Miss A. M.
Oud-Asst.

KALSBEEK, F. Oud-Asst.


Netherlands (Leiden) 56 Norway

Lab. for Exper. Histol., Fac. of Med., Univ. of Leyden, Wassenaarseweg, Leiden.

GAILLARD, P. J. Dir. * CODDENS, J. G.
ZAAIJER, Miss J. J. P. * WALLER, H. J.
Conservator

HOGEWONING, C. H.
Asst.

OORT, J. Asst.
Vet.-Anat. Inst., Fac. of Vet., Univ. of Utrecht, 172, Biltstr., Utrecht.

KREDIET, G. Dir.
LENNEP, E. W. van
Prim. Asst.

Hubrecht Lab., Dep. of Embryol., 2, Janskerkhof, Utrecht.

RAVEN, CHR. P. Dir. * BOUMAN, Miss M.
NIEUWKOOP, P. D. * BOTERENBROOD, Miss E.
Adj. Dir. * KREMER, Miss A.

MENNEGA, E. A.
OORDT, P. van
PLANQUE, B. de
FABER, J.
MOLEN, L. A. v. d.
FLORSCHOTZ, P. F.
MINGANTI, A. (Palermo)
Zool. Lab., Fac. of Sci., Univ. of Utrecht, 3, Janskerkhof, Utrecht.

RAVEN, CHR. P. Dir.
BRETSCHNEIDER, L. H.
Curator

KAMER, J. C. v. d.
Asst. in Chief

BEZEM, J. J. Asst.
SOBELS, F. H. Asst.
Anat. -Embryol. Lab. der Rijks Univ. Utrecht, Med. Fac, Janskerkhof 3 Utrecht.

MIJSBERG, W. A. Dir.

DETH, J. H. M. G. van
Prosector

BARENTS, J. W. Asst.
BROERS, C. J. Asst.
NORWAY.

Anat. Inst., Fac. of Med., Univ. of Oslo, Oslo.

JANSEN, J. Dir.
HARKMARK, W. Asst.
Zool. Lab. der Univ., Oslo.

BONNEVIE, Kr. RUUD, G. (no embryol. work in progress)



Poland 57 Poland (Wroclaw)

POLAND (Polska).

Inst, of Histol. and Embryol., Med. Acad., Gdansk.

HILLER, S. Dir. * KROTKIEWICZ, T.
WSZELACZYnSKA, M. * PIOTROWSKA, J.
Assoc. Ast. * WISKONT. H.

GODLEWSKI. H.
Assoc. Asst.

KRAHELSKA, J. Asst.
Zaklad Anat. Porownawczej U. J. im. H. Hoyera, Krakow, ul. sw. Anny 6.

GRODZINSKI. Z. * GAZDA, A.
Head of Inst. * SOLEWSKI, W.

MARCHLEWSKI. J. Asst. * sWIERZAWSKA, K.
DATKOWNA. H. Asst.
Zool. Dep.. Fac. of Sci., Jagellonian Univ., Krakow, St Anne 6.

SMRECZYNSKI, S. Dir.
CZAPIK, A. Asst.
KRZANOWSKI, A. Asst.
WEGLARSKA, B. Asst.
KRZYSZTOFOWICZ, A.
Dep. of Endocrinol.. Med. Fac, Univ. of Lodz, Nowotki 137, Lodi.

BER, A. Head of Dep.
ORLOWSKI, A. Asst.
Inst. d'Histol. et d'Embryol.. Fac. de Med. de l'Univ. a Poznan, ul. Swi^cickiego 6, Poznan.

KURKIEWICZ, T. Dir.
SLOTWINSKI, J. Docent
MI£TKIEWSKI, C. Docent
Zaklad Anat. Porownawczej i Embriol. Univ. M, Kopernika, Sienkiewicza 30, Toruri. SZARSKI. H. Dir.

STRAWINSKI, S. Asst.
Zaklad Histol. i Embryol., Univ. Warszawskiego. Warszawa.

ZWEIBAUM, J. (no embryol. work in progress)

Inst, of Histol. and Embryol. of the Univ. of Warszawa, ul. Chalubiriskiego 5, Warszawa.

ZWEIBAUM, J. Dir.

KONOPACKA, B. Lect.
KRAINSKA. M. K. Demonstr.
Zaklad Histol. i Embryol. Uniw. Wroclawskiego, ul Chahibinskiego 6a, Wroclaw.

SEMBRATOWA, Z. Dir.
RADKOWA. M. Asst.
Zaklad Anat. Porownawczej, Inst. Zool. Uniw., ul. Sienkiewicza 21. Wroclaw.

SZARSKI, K. W. Dir.
ORSKA. J.
Adjunct (asst. lect.)

BUCHTOWNA, A.
Senior asst.

WINOWSKA. J. Senior asst.


Poland (Wroclaw) 58 Sweden (Stockholm)

Inst. Zool. Uniw., ul. Sienkiewicza 21, Wroclaw.

SEMBRAT. K. Dir.
RADECKA, E. Asst.
PASCHMA, M. Asst.
PORTUGAL.

Inst, de Histol. e Embriol., Fac. de Med., Lisboa.

Celestino da COSTA, A. Dir.
ROUMANIA.

Inst, de Biol., Strada Mico 3, Cluj.

PREDA, V. Dir.
Anat.-Embryol. Inst.. Fac. of Med., Targu-Mures,/Marosvasarhely/.

KROMPECHER. S. Dir.
BOD, A.
NEBEL, L.
SZENTPeTERY, J. C.
ZAKARIAS, Z.
SPAIN.

Lab. de Anat. y Embriol., Fac. de Med., Cadiz.

ORTS LLORCA, F. Dir.
SWEDEN.

Zool. Inst., Embryol. Dep., Univ. of Lund, Lund. GISLEN, T. Dir.

DIDING, S.
WEDIN, B.
Zootom. Inst., Univ. of Stockholm, 116, Drottninggatan, Stockholm.

PEHRSON, G. T. Dir. * KINDAHL, Miss M. E.
JOHNELS, A. Docent * LINDSTRCM, T. J. J. V.
OLSSON, R. Asst. * MACS, Miss K.
Histol. Dep., Karolinska Inst., Stockholm.

GYLLENSTEN, L. J. W.
Inst, for Cell Research, Karolinska Inst., Stockholm.

CASPERSSON, T. (data not yet received)

Wenner-Grens Inst, of Exper. Biol., Fac. of Sci. and Mathem., 16, Norrtullsgatan, Stockholm.

RUNNSTRoM, J. A. M. Dir.
LINDBERG, N. O. H.
Assoc. Prof.

BOREI, H. Asst. Prof.
MONNE, L. M. W. A.
Asst. Prof.

PERLMANN, H. P. Asst.
BACKSTROM, S. Asst.
GUSTAFSON, U. T. Asst.
HULTIN, J. M. T. Asst.
LINDVALL, S. Asst.
IMMERS, J. Asst.
VASSEUR, E. J. E. Asst.
WICKLUND, Miss E. Asst.


Sweden (Uppsala) 59 Switserland

Anat. Inst.. Upps. Univ., Uppsala.

HOLMDAHL, E. (data not yet received) Uppsala Univ., Zool. Inst., Uppsala.

HORSTADIUS, S. Dir.
Inst, for Zoophvsiol.. Fac. of Mat. -Nat. Sci., 9, Villavagen, Uppsala.

LINDAHL. P. E. Dir. * SWEDMARK, B. G.
SWITSERLAND.

Zool. Anst. der Univ.. Rheinsprung 9, Basel.

PORTMANN, A. Dir.
NQESCH, H.
STOIGER, H.
Inst. Tropical Suisse, Stappelberg 7, Basel.

GEIGY, R. (data not yet received) Anat. Inst, der Univ., Med. Fak., Biihlstr. 26, Bern.

HINTZSCHE, E. Dir.
STRAUSS, F. Prosekt.
Hirnanatom. Inst, der psychiatr. Univ.-klinik, Med. Fak., Waldau, Bern. GRONTHAL, E. Dir.

FEREMUTSCH, K. Asst.
HEIMANN, H. Asst.
Abt. fur Zoophysiol. des Zool. Inst, der Univ., Philos. Fak., Sahlistr. 8, Bern.

LEHMANN, F. E. Dir. * BISS. Mrs R.
ANDRES, G. Asst. * ROETHELI, A.
TSCHUMI. P.
Zool. Inst, der Univ., Philos. Fak., Muldenstr. 8, Bern.

BALTZER. F. Dir. (data not yet received) Zool. Inst., Fribourg.

KAELIN, J. (data not yet received)

Inst, de Zool. et Anat. comp., Univ. de Geneve, Rue de Candolle. Geneve.

GUYeNOT, E. Dir.
Inst. d'Anat., Lab. de Neurohistol., Bcole de Med., 20, Rue Ecole de Med., Geneve.

BAUMANN, J. A. Dir. * MICHELI, A.
WEBER. A. Dir. du Lab. * NEIGER, M.
de Neuro-histol. Anat. Inst, der Univ. Zurich, Med. Fak.. Gloriastr. 19, Zurich.

TONDURY, G. Dir.
GALLERA, J. Asst.
THEILER, K. Asst.
SCHENK. R. Asst.
Zool. Inst, der Univ. Zurich, Naturw. Fak., Kiinstlergasse 16, Zurich 6.

HADORN, E. Dir. * ANDERS, G.
STEINER, H. Prof. * BUCHER. N.
GLOOR. H. Instr. * NATER. H.


U.S.S.R. 60

U.S.S.R.

Inst, fur exper. Med. Jer U.S.S.R., Abt. fur exper. Embryol., Leningrad.

SVETLOV, P. (data not yet received) (Address unknown)

BLACHER, L. J. (data not yet received) (Address unknown)

FILATOW, D. (data not yet received)

Lab. fur Organ, gen., Inst, fur Evol. Morphol., Akad. der Wissensch. der U.S.S.R., Moskau.

DRAGOMIROW, N. (data not yet received)

Inst, of Cytol., Histol. and Embryol. of the Acad, of Sci. of the U.S.S.R.. Obrexh Str. 6, Moscow.

POLEZAJEW, L. W. (data not yet received) Inst, fur Cytol. und Embryol., Voronzovo, Pole 6, Moskau 120.

LOPASHOV, G. (data not yet received)



==General List of Names==

With Subjects of Work in Preparation

(Alphabetical order)


ABELOOS, M. Regeneration in marine Annelids. IV. 2. C.

Regeneration in marine Planarians. IV. 2. C.

Regeneration in Sphaeroma (Crustacea). IV. 2. D.

Compensatory regulation in the Serpulid Hydroides. IV. 2. B.

Growth and relative qrowth in Mammalia and Arthropods.

II. 19. M. andD.

ABERCROMBIE, M. A study of artificially produced duplicitas anterior. Gallus domesticus. Ma. lc. L. (in collaboration with Miss M. R. MORGAN)

Transplantation experiments on chick blastoderm in tissue culture,

with particular reference to induction of the prechordal head and regulation of the primitive node. Gallus domesticus. Ilia. 7. L.

Quantitative description of development of the otocyst. Oryctogalus

cuniculus. *• !"• ™ A studv of liver regeneration in tissue culture. Rattus norvegicus.

7 IV. 5. M.

ADAMS, Miss A. E. (data not yet received).

ADELMANN, H. B. (data not yet received).

AGARWALA, D. Biology of oviposition. Locusta. IHb. 4. D.

ALDEN, R. H. Study of egg transport and implantation; early development of trophoblast; embryo-maternal relationships during nidation. Mus. Mb. 3 - M ALOISI, Miss G. Effects of egg extracts on tumours induced by 1,2 benzopirene in Anura. Uld. 5. J.

ALTSCHUL, R. Regeneration of skeletal muscle in tadpoles. Amblystoma. IV - 5 - J Regeneration of skeletal muscle in mammals. IV. 5. M.

Tissue culture of normal and damaged endothelium. Mammals (?)

Ilia. 16. M (?)

ALVAREZ— GUTIfiRREZ, Miss J. Cytochrome oxidase in the embryo. Chick and pig. Mb. 2c. c. HV. (together with the related work of W. BUNO and R. GONZALEZ MARINO)

AMOROSO, E. C. Development of the urino-genital canals in domestic Mammals. II. 17. M.

(in collaboration with G. R. de BEER)

The structure of the placenta of Anomalurus. II. 3. M.

(in collaboration with G. R. de BEER)

AMPRINO, R. M. Study of the effect of the removal of the whole anlage of the eye (or of parts of it) on the organogenesis and histogenesis of extrinsic eye muscles, of the lids, of the lacrymal glands, of the naso-lacrymal duct. Chick. Ma. 10. L.



Amprino 62 Back

Study of the effect of the removal of the anlage of the rhombo mesencephalon on morphogenesis and histogenesis of the extrinric eye muscles. Chick. Ilia. 10. L.

ANCEL, P. (data not yet received).

ANDERS, G. Developmental physiology and genetics of the lozenge

alleles in Drosophila melanog aster. IIIc. 3. D. ANDERSON, Miss I. L. An X-ray study of bone development in

Rana clamitans during metamorphosis. V. 4. d. J.

ANDRES, G. Chemische Beeinflussung der Tubifex-Mitose durch

Chinone. Illb. 20. e. C.

Erzeugung von Teratomen bei Xenopus. Hid. 2. J.

ANNEZ, Ch. Experimental and cytochemical embryology. Passalurus

ambiguus (Nematode) . Illb. 2a. c. C.

AREY, L. B. (data not yet received). ARIfiNS KAPPERS, J. Function of the paraphysis cerebri in Am blystoma mexicanum. Illb. 9. }.

Development and function of the paraphysis in Lacertilia. Lac.

muralis, Lac. viridis and Lac. vivipara. I. 9. K.

Embryological development of the roof of the IV ventricle. Am blystoma mexicanum. I. 9. J.

Development of the meninges and its connection to the circulation

of cerebrospinal fluid. Amblystoma mexicanum. I. 9. J.

ARMSTRONG, P. B. Function in the developing liver. Amblystoma punctatum and Ameiurus nebulosus. Illb. 13. I. and J.

ASSENMACHER, I. Development of gonads, hypophysis and hypothalamus in birds. Chick, duck and pigeon. I. 18. L. (in collaboration with J. BENOIT)

ATLAS, M. Conditions of maturation of the egg and ovulation. Rana pipiens. Illb. 4. J.

Nature of the yolk and its changes in development. Gallus domes ticus. Illb. 2c. c. L.

AUER, J. The development of hypothalamic fiber connections in the golden hamster fetus as well as in young specimens. Cricetus cticetus (Rodentia) . I. 9. M.

Studies of regeneration and degeneration of brain material after

extirpation of parts of the forebrain (in particular of diencephalon) in early development (14 — 21 days of pregnancy) of rat fetus. Mus norvegicus albus (Rodentia). IV. 5. M.

AUSTOKER, Mrs J. The bursa ovarica of Elephantulus myurus jamesoni. I. 17. M.

AVEL, M. (data not yet received).

AVIS, F. Study of intra-uterine influences upon embryonic growth, differentiation, and organogenesis by means of ova and ovary transplants between races known to differ genetically in adult body size as determined by the general size factors and also by genetic factors affecting specific regions of the axial skeleton. Oryctolague cuniculus. IIIc. lb. M.

(in collaboration with P. B. SAWIN and D. DIETZ)

BACKSTROM, S. A. A. Morphological studies on lithium-treated developing sea-urchin eggs. Psammechinus miliatis. Ilia. 2a. e. G.



Baco 63 Bax

BACGN, R. L. (data not yet received).

BAERENDS, G. P. Embryological development of Ammophila campestris pubescens (Hymenoptera (Insecta)) , and dependence of its velocity of microclimate. I. 2a. D.

BAFFONI. G. Reaction of nervous cells to periphery. Amphibians.

Ilia. 9. J.

Regeneration of spinal medulla. Reptiles. IV. 5. K.

BAKER, H. B. (data not yet received).

BAKER, R. C. Origin and development of the human pharyngeal hypophysis. I. 18. M.

(joint problem with L. F. EDWARDS)

BALINSKY, B. I. Prenatal growth and differentiation of the mammary glands. Investigation of some cytochemical properties of mammary gland rudiments (ribonucleic acid, alkaline phosphatase, indophenoloxydase content) as compared with the same in skin epidermis, hair follicles and mesenchyme. Differentiation of mammary gland rudiments in vitro. Mus musculus and Lepus cuniculus.

Hlb. 8. M.

BALTZER, F. (data not yet received).

BANGMA, P. The influence of malonitril on the development of Amblystoma mexicanum. Illb. 2a. e. J.

BARBASETTI, Miss M. A. Developmental potencies of neural crest in Anura, Rana esculenta. (transplantations). Ilia. 7. J.

Determination of the ear anlage. Rana esculenta. Ilia. 10. J.

Effects of antimitotics on early development. Rana esculenta.

(in collaboration with P. PASQUINI) Hlb. 2a. e. J.

BARENTS, J. W. Implantation of fertilized rabbit ova in the uterus.

Illb. 3.

Artificial deciduomes in rats. Illb. 17.

BARIGOZZI, C. Development of tumours in rars. Hid. 5. M.

BARKA, T. The role of the autonomous nervous system in the regeneration of the lens. Triton. IV. 5. J.

BARNETT, S. A. Effects of low temperature on growth and reproduction in Mus musculus (Rodentia). Ilia. 19. d. M.

BARTELMEZ, G. W. (data not yet received).

BARTH, L. G. (data not yet received).

BAST, T. H. Embryology and anatomy of the middle and internal ear. Homo. I. 10. M.

BATTAGLIA, B. Phosphatase distribution in Amphibian eggs. Rana, Bufo. Illb. 2c. c. J.

BATTY, Th. Development of all systems of the toadfish in relation to behavior. Ilia. 2a. I.

(in collaboration with H. C. TRACY and J. WINBLAD)

BAUMANN, J. A. Developpement du nerf facial (peripherique). Rameaux transitoires et definitifs. Leur composition — leur distribution. Cobaye. I. 9. M.

BAX, W. A. Development of the mediastinal connective tissue. Mammals. I. 16. M.

BAXTER, E. W. Biology of Lampreys (Cyclostomata) . (Including development and metamorphosis). Illb. 2a. I.



Bea 64 Berg

BEAN, Mrs E. S. (data not yet received).

BEATTY, R. A. Effect of specific enzyme poisons on embryonic development. Correlation of developmental events with activity of specific enzymes. Rana temporaria and Triton spp. Illb. 2c. e. J.

Influence of maternal environment and cytoplasm of female-sterile

mutants on egg development. Mode of action of the "fused" factor on development. Drosophila melanog aster. IIlc. lb. D.

Heteroploidy in mammals. Spontaneous heteroploidy — analysis

of factors involved. Induced heteroploidy — methods of production. Viability of polyploid embryos. Physiological embryology of polyploid embryos. Mus tnusculus. IIlc. 2. M. (in collaboration with M. FISCHBERG)

Transplantation of mammalian ova. Mus musculus. Ilia. lb. M.

(in collaboration with M. FISCHBERG)

BECCARI, N. (no embryol. work in progress).

BEER, G. R. de Studies on the structure of the egg-tooth and the caruncle in amphibians, reptiles and birds. II. 8. V.

The egg-tooth and caruncle of the Monottemes. II. 8. M.

(in collaboration with J. P. HILL)

Studies in the derivates of the neural crest with special reference

to dermal bone. Vertebrates. II. 7. V.

Some aspects of the problems of homology (with sp. ref. to the

bicentenary of the birth of GOETHE). Vertebrates. II. la. V.

Development of the urino-genital canals in domestic mammals.

(in collaboration with E. C. AMOROSO) II- 17. M.

The structure of the placenta of Anomalurus. II. 3. M.

(in collaboration with E. C. AMOROSO)

BELANGER, L. F. The mechanism of deposition of Phosphorus and other mineral components of bones and teeth, as revealed with the help of radioisotopic tracers and the "coated autograph" technique. White Rat, the Golden Hamster (Cricetus aureus) and the Frog tadpole. Small reptiles of the order Squamata are also to be used shortly. Illb. ll.d.V.

BELLAIRS, A. d'A. Development and morphology of the head structures in a large number of species of reptiles, studied mainly by serial sections of the forms below. II. 2b. K.

BENAZZI, M. Fertilization, pseudogamy, cytology, heredity in Planarians. Species of Tricladida. I. 4. C.

BENAZZI— LENTATI, Mrs G. Fertilization and cytology in Planarians. Species of Dugesia (Tricladida). I. 4. C.

BENOIT, J. Development of gonads, hypophysis and hypothalamus in birds. Chick, duck and pigeon. I. 18. L.

(in collaboration with I. ASSENMACHER)

BER, A. The influence of hormones on metamorphosis. Vertebrates? (in collaboration with A. ORLOWSKI) V. 2. f. V.?

BEREK, L. Researches on the time of appearing of lipoids in the embryonic cartilages. Vertebrates. Illb. 1 I.e. V.

(in collaboration with I. NAGY and Gy. SAVAY)

BERG, W. E. Physiological and biochemical studies of mosaic eggs. Mytilus edulis (Pelecypoda) . Illb. 2a. c. E.



Berg 65 Bonde

BERGERARD, Madame Yv. In vitro studies on mammalian fetal sexual structures. IHb. 17. M.

BERRILL, N. J. (data not yet received).

BEZEM, J. J. Determination of Li in amphibian-eggs, treated with LiCl. Amblystoma. IHb. 2c. e. J.

BIJTEL. Miss J. H. Investigations concerning the process of outgrowth of the tail in Amphibia with special reference to the role of the chorda dorsalis and the tail mesoderm. Amblystoma mex., Triton taen. and Xenopus laev. Ilia. 2b. J.

Experiments concerning the factors which determine the normal

course of the outgrowing pronephric duct in Amphibia. Amblystoma mex., Triton taen. and Xenopus laev. Nib. 17. J.

Development and phylogenetic origin of the columella auris in

Amphibia. Amblystoma mex., Triton taen. and Xenopus laev.

I. 10. J.

BISS, Mrs R. Elektronenoptische Studien uber Plasmastruktur des Eies von Tubifex. '• 2a. C.

BLACHER. L. J. (data not yet received).

BLOUNT, R. F. Relations of the hypophysis to development. Amblystoma. Hlb. 18. J.

Endocrine studies and development. Mus musculus. INb. 18. M.

BLUNTSCHLI, H. (data not yet received).

BOD, A. The morphological and microchemical development of the

epithelial fat of the skin, with special regard to the vernix caseosa.

Man. I. 8. M.

(in collaboration with S. KROMPECHER) BOEKE, J. Regeneration and development of the central nervous

system. Vertebrates. IV. 5. V.

The autonomous nervous system. Vertebrates. I. 9. V.

The infundibular organ of Amphioxus. Ilia. 9. H.

BOELL, E. J. Hypertrophy of enzyme development in Amblystoma

punctatum resulting from rearing embryos in solutions containing enzyme substrates. IHb. 2c. c. J.

Development of cholinesterase in the Amphibian nervous system

in relation to the functional maturation of various regions. Amblystoma punctatum. 111b. 9. c. J. (in collaboration with S. C. SHEN)

Cholinesterase in brain hyperplasia and hypoplasia following eye

transplantation and extirpation. Amblystoma punctatum and Ambl. tigrinum. Hlb. 9. c. J.

(in collaboration with S. C. SHEN)

BOISSELOT, Mile J. Influence avitaminose maternelle chez la rare

avitaminose B2 avitaminose biotine avitaminose pantothenique avitaminose folique Hid. 2. M.

(en collaboration avec A. GIROUD) BONDE, C. von Embryology of the Cape Crawfish, Jasus lalandii (Crustacea) with metamorphosis. I. 2a. D.

V. 3. D.



Bonde 66 Brachet

Embryology of certain Elasmobcanchii. I. 2a. I.



BONE, E. Modifications of the competence in Urodeles (Ttiturus taeniatus) after local action of LiCl. Ilia. 7. J.

(in collaboration with G. VANDEBROEK)

BONIN, W. Origine des ganglions craniaux aux depcns des placodes epiblastiques. Amia calva. I. 9. 1.

Structure d'un oeuf humain au stade de la ligne primitive. Origine

du mesoblaste. Mode de formation du chorion villeux. I. 6. M.

BONNEVIE, Kr. (no embrycl. work in progress).

BOOKHOUT, C. G. "The development of Dasybranchus caducus (Polychaeta) from egg to pre-adult." Egg deposition, culture methods, day to day observations and records of living larvae and juveniles, study of fixed material. II. 2a. C.

Embryology and development of Haploscoloplos bustoris (Polychaeta). II. 2a. C. (in collaboration with E. C. HORN)

BOREI, H. Respiration of sea urchin eggs in different stages of development. Enzymatic constitution of eggs, kinetics of enzyme action. Paracentrotus lividus, Psammechinus miliaris and other sea urchins.

Illb. 2a. a. G.

BOTERENBROOD, Miss E. Analysis of the neural induction. Transfer of inductive substances in horizontal direction through the presumptive neural plate (heteroplastic transplantation of ectoderm) Triturus taeniatus, alpestris and cristatus. Ilia. 7. J.

(in collaboration with P. D. NIEUWKOOP and Miss A. KREMER)

BOUIN, P. (data not yet received)

BOUMAN, Miss M. Regulation potencies in the neural plate. Formation of neural crest by regulation after implantation of young neural plate tissue in the ventral side of neurulae, or by homogenetic induction after implantation in middle gastrulae. (heteroplastic transplantation). Triturus taeniatus, alpestris and cristatus.

Ilia. lc. J. (in collaboration with P. D. NIEUWKOOP and B. de PLANQUE)

BOUNOURE, L. (data not yet received).

BOUR, J. W. H. Development of diencephalon and hypophysis in

man. I. 9. M.

(in collaboration with J. DANKMEYER and W. LUYENDIJK) BOYD, J. D. Human and mammalian embryology with special reference

to nervous system. II. 9. M.

BOYDEN, E. A. Development of the branchopulmonary segments.

Homo sapiens. I. H. M.

(in collaboration with L. J. WELLS) BOYER, C. C. Rate of metabolism during development. Domestic [owl.

Illb. 2a. b. L.

Development of Golden Hamster, Cricetus auratus. I. 2a. M.

BRACHET, J. L. A. Studies on the action of a heat shock on development and cytochemistry on Amphibian eggs. Illb. 2a. d. }.

Studies on the action of specific antisera on morphogenesis. Vertebrates. Illb. 2a. e. V.



Brachet o/ Ca

Cytocherrical observations on the first stages of Amphibia, (various

species). Mb. 2c. c. J.

(in collaboration with J. PASTEELS)

BRETSCHER, A. (data not yet received).

BRETSCHNEIDER, L. H. Electron microscopical investigation on differentiation: Insemination, growth and differentiation of the egg of Limnaea. I. 2a. E.

BRIEN. P. Reproduction asexuee. Regeneration. Etudes des facteurs conditionnant l'apparition de la sexualite. Formation des cellules sexuelles. Developpement embryonnaire. Tuniciers, Eponges, Coelenteres et Oligochetes. Ilia. 2a. EV.(A. C.GetH).

(partiellement en collaboration avec Madame M. H. HERLANT)

BRINI,, A. Origine des cellules pigmentaires de la choroide chez les vertebres superieurs. Ilia. 10. HV.

BROERS, C. J. The development of tympanic region and skull of Tarsius spectrum. I. 10. M.

BRPNDSTED, H. V. Regeneration. Triclads(?). IV. 2. C.

Mammalian embryology (first stages). I. 2a. M.

BRUNETTI, G. M. Regeneration de la queue des Reptiles. IV. 4. K. BUCCIANTE, L. (data not yet received).

BUCHER, N. Influence of radiation and chemicals on Drosophila melanogaster (Insecta) -ovaries. Mb. 17. e. D.

BUCHTOWNA, Miss A. Development of ribs. Salmonidae and Cyprinodontidae (Teleostei) and Salamandra (Urodela). II. ll.LV.

BUNO, W. Normal table of the development of Bufo arenarum Hensen.

I. 2a. J.

Role of the Hensen knot. Induction in birds. Ma. 7. L.

Prospective areas in the chick blastoderm. Ma. 2b**. HV.

(in collaboration with C. M. FRANCHI)

Enzymes in the development of the embryo. Chick and pig.

Mb. 2c. c. HV. (in collaboration with R. E. GONZALEZ MARINO and Miss J. ALVAREZ GUTIERREZ)

BURNS, R. K. The experimental control of sex differentiation in the embryo by means of hormones. Didelphys virginiana (Marsupialia) .

Ma. 17. M.

BURR, H. S. (data not yet received).

BUTLER, E. G. A study of the mechanics of the formation of the regeneration blastema. The influence of nerves on blastema formation. Regression in nerveless non-regenerating limbs. Amblystoma punctatum and Ambl. opacum. IV. 2. J.

BUTLER, E. G. Blastema formation and regeneration in urodele limbs in which proximo-distal polarity has been reversed. Amblystoma punctatum and Ambl. opacum. IV. 4. J.

CAIRNS, J. M. Study of the determination of details of feather structure, including both regional characteristics and hereditary variations. Gallus domesticus. Ma. 8. L.

Study of the differentiation of the limb structure. Gallus domes~

ticus. Ma. 2b. L.



Cal 68 Che

McCALLION, D. J. Experimental studies on the regeneration of the tadpole of Rana clamitans. IV. 4. J.

ticus. Ilia. 2b. L.

(work completed, May '47, and published in Can. Jour. Research, vol. 26, pp. 62—65; 82—92, 1948)

CAMBAR, R. (data not yet received).

CAMPENHOUT, E. van Embryol. development of the innervation of the gonads. Birds. I. 17. L.

Regeneration of the central nervous system in the chick embryo.

IV. 5. L.

CARTER, T. C. Developmental study of a new tibial hemimelia mutant

in Mus musculus. IIIc. 3. M.

CASE, J. F. Investigating the ontogeny of endocrine correlation and

integration mainly by intracoelomic grafting techniques. Chick.

Ilia. 18. L.

CASPARI, E. Development of eye pigmentation in wild type, aa and

wa wa Ephestia kuhniella (Lepidoptera). IIIc. 3. D.

Development of tail structure in normal, Brachyury Kinky and

Fused. Mus musculus. IIIc. 2. M.

CASPERSSON, T. (data not yet received).

CASTIGLIONI, M. C. Development of imaginal discs, for the study of the cell size in different developmental conditions. Drosophila (Insects). IIIc. lb. D.

CATE, G. ten Biochemical investigations about developmental physiology. Development of enzymes, embryonic metabolism. Rana, Amblystoma and Gallus. Illb. 2c. b. J. and L.

Biochemical embryology: serological investigations about development of organ-specific substances (lens of the eye). Rana and Gallus. Illb. 10. e. J. and L.

CEI, J. M. Ecological and biochemical characteristics of the first stages of development of typical neotropical forms. South-American Batrachians. Illb. 2a. J.

CHAMBERS, R. (no embryol. work in progress).

CHAMBERS, W. W. Studies on regeneration of mammalian spinal cord. IV. 5. M.

CHANDLER, S. B. Study of the human inguinal canal, with special reference to its developmental anomalies. Hid. 4. M.

CHANG, C. Y. Sex determination in amphibians by steroid hormones. Anurans. Illb. 17. f. J.

CHANMUGAM, P. K. Descriptive and Comparative Embryology. Primates. II. 2a. M.

CHASE, H. B. Study of anophthalmia and microphthalmia. Mus musculus. IIIc. 3. M.

Study of skin and its derivatives with emphasis on hair development and pigment distribution. Mus musculus. IIIc. 3. M.

CHASE, S. W. (data not yet received).

CHATTERJEE, H. Etude des cas teratologiques individuels y compris les teratomes. (cyclopie). Homo. Hid. 2. M.

(en collaboration avec A. LELIfiVRE et A. GIROUD)

CHENEY, R. H. (data not yet received).



Chu 69 Cohen

CHUANG, HSIAO-HUI Das Material uber die Zusammenarbeit der Keimblatter — Versuche mit Grossdefekt an verschiedenen Regionen der Neurula — soil weiter bearbeitet werden. Triton alpestris und 77. taeniatus. Ilia. lc. J.

Idariibcr erschien bereits eine vorlaufige Mitteilung in Z. Naturforschg 2b. 1947)

Die Wirkung von Sulfa- Verbindungen auf die embryonale Ent wicklung von Rana nigromaculata. Illb. 2a. e. J.

CIGADA, M. Development of myosin and actin. Vertebrates.

Illb. 12. V. CITTERIO, P. Determination in early development. Amphibia and

Echinodermata. Ilia. lc. J. and G.

CLAES, M. T. The development of the trabeculae cranii in perch

embryos treated with LiCl. Perca (Osteichthyes). Ilia. 11. I.

(in collaboration with G. VANDEBROEK) CLANCY, CI. W. Relations of genes in the development of eye colour

in Drosophila melanog aster. Hie. 3. D.

Biochemical studies of the eye pigments in Drosophila melanogaster.

Illb. 10. c. D. CLARK, E. R. Studies on growth of various implanted tissues with

the rabbit's ear chamber technique. Ilia. 19. M.

(in collaboration with R. G. WILLIAMS)

CLARK, H. Effect of ultrasonic vibrations on molting response in the newt, on regeneration of the limbs of the newt, and on gonads. Triturus viridescens. IV. 4. J.

Carbohydrate and fat metabolism in chick embryos. Gallus do mesticus. Illb. 2a. b. L.

CLARK. L. B. (data not yet received).

CLARK. S. L. (no embryol. work in progress).

CLAVERT, }. Egg formation in birds. (Role of female hormone in vitellogenesis). Pigeon, duck and chick. Illb. 4. f. L.

CLEAVE, H. J. van (data not yet received).

CLEMENT. A. C. (data not yet received).

CODDENS, J. G. The influence of different hormone-concentrations on the growth of tissue-cultures of embryonic origin. We search for the optimal concentration of several hormones (growth-promoting hormone, oestrone, a.o.) for different sorts of tissues. Gallus domesticus. Illb. 19. f. L.

COHEN, S. The chemistry of muscle differentiation. Fractionation of proteins, determination of nucleic acids in mitochondria, nuclei and cytoplasm of muscle tissue in differentiated state at various stages of differentiation of fibrils and cross-striation during development of isolated somites and undifferentiated mesoderm. Chick. (in collaboration with H. HERRMANN) Illb. 12. c. L.

Metabolic interaction between tissues. Exchange of metabolites

between tissue components (epithelium-stroma) with different degrees of oxidative or anaerobic metabolism. The investigation is carried out with model tissues, such as cornea, as well as with tissue-cultures. Higher Vertebrates. Illb. 2b***. b. HV.(?)

(in collaboration with H. HERRMANN)



Cohen 70 Cot

The metabolic maturation of human liver. The capacity to synthesize creatine from glycocyamine and methyl donors is tested with livers of human feti of different inauterine age. Illb. 13. b. M.

(in collaboration with H. HERRMANN)

COLOMBO, G. Cytology during embryogenesis. Amphibians.

Ilia. 2a. J.

COLWIN, A. L. Fertilization reaction. Saccoglossus (Enteropneusta) .

(in collaboration with Mrs L. H. COLWIN) II lb. 4. F.

Normal and experimental development. Saccoglossus (Enteropneusta) . Ilia. 2a. F. (in collaboration with Mrs L. H. COLWIN)

Effect of certain chemicals on development. Molgula, Ciona and

Styela (Tunicata). Illb. 2a. e. H.

COLWIN, Mrs L. H. Fertilization reaction. Saccoglossus (Enteropneusta). Illb. 4. F. (in collaboration with A. L. COLWIN)

Normal and experimental development. Saccoglossus (Enteropneusta). Ilia. 2a. F. (in collaboration with A. L. COLWIN)

Development of Thyone (Holothuria) . Ilia. 2a. G.

COMANDON, J. (data not yet received).

CONKLIN, E. G. (data not yet received).

O'CONNOR, R. J. Factors affecting mitosis. Amphibians and birds.

Hid. 2. J. and L. CORDER, R. Prenatal growth and differentiation of the organs (brain,

cord, hypophysis, etc.) in the fetal puppy. Ilia. 19. M.

(in collaboration with H. B. LATIMER) CORNER, G. W. Histology of uterus and ovaries in reproductive cycle

of primates. Chiefly Macaca rhesus. I. 17. M.

Embryological study of pregnancies terminated because of genetic

or maternal factors threatening the fetus, e.g. rubella, mongolism. Homo sapiens. Hid. 2. M.

COPENHAVER, W. M. (data not yet received). COSTA. A. Celestino da Development of the adrenals. Birds and mammals. I. 18. L. and M.

Development of the sympathetic. Birds and mammals. I. 9. L. and M.

COSTELLO, D. P. Research in cyto-embryology and cyto-physiology

on Marine Invertebrate eggs. Illb. 2c. c. EV.

Research in the general field of Heteroploidy. This includes surveys

of frequency of polyploidy and haploidy in natural populations of salamander larvae; induction of heteroploidy by cold and heat effects of chemicals, etc., in production of abnormalities of mitosis as the basis for induction of heteroploidy. Amblystoma punctatum (in collaboration with Miss C. HENLEY) IIIc. 2. }

COTRONEI, G. Recerche su trapianti, espianti e parabiosi tra anfib anuri e urodeli alio scopo di indagare i processi di regolazione differenziazione nel quadro dei problemi della costituzione biologica Anfibi. Ilia. lc. J

(in collaboration with T. PERRI and Mrs L. URBANI— MISTRUZZI)



C 71 Dela

CROMPTON, A. W. Cranial ontogenesis of Spheniscus demersus.

II. 2b. L. CZAPIK, A. Development of heart of Insects. Agelastica alni L. (Coleoptera). I. 15. D.

CZEKANOVSKAJA, O. (data not yet received).

DAGG, C. P. Nuclear differentiation and development. Chicken.

(in collaboration with A. M. SCHECHTMAN) Nib. 19. L.

DALCQ, A. M. Cytochemistry of early stages of development. Rodentia and Insectivora. 111b. 2c. c. M.

(in collaboration with coworkers)

Regulation in blastula and gastrula stage. Urodela and Anura.

(in collaboration with coworkers) Ilia. lc. J.

DALES, R. P. Breeding, larval development and ecology of Polychaetes. Nereis diversicolor (Nereidae) , Tharyx marioni (Cirratulidae) , Heteromastus filiformis (Capitellidae). I. 2a. C.

DALTON, H. C. Gene action controlling development of pigmentation in white and dark strains of Mexican axolotl. Siredon mexicanum.

IIIc.3.J.

DAM, L. van Structure of larval pharyngeo-branchial apparatus as a respiratory and food-collecting organ. Xenopus laevis. I. 14. J.

DAMAS, H. F. C. Etude du developpement des Lamproies, Lampetra fluviatilis; L. planed (Cyclostomes) . I. 2a. I.

Etude de l'influence de la lumiere sur le developpement des Ver tebres inferieurs. Cyclostomes et Bvataciens. Ilia. 2a. d. LV.

D'ANCONA, U. Differentiation of the gonads in Vertebrates. Teleosteans and other Fishes. II. 17. I.

DANIELLI Investigations if there occur any changes in the nucleus in course of differentiation. Vertebrates. Illb. 2c. V.

DANKMEYER, J. Permeability of the placenta in rar and guinea-pig. Investigation with isotopes. Illb. 3. M.

(in collaboration with C. B. HEYN)

Development of uterus and ovary in man. I. 17. M.

(in collaboration with Miss A. DEKKER)

Development of diencephalon and hypophysis in man. I. 9. M.

(in collaboration with W. LUYENDIJK and J. W. H. BOUR)

Investigations on congenital heartmalformations. Homo. Hid. 4. M.

(in collaboration with H. A. SNELLEN and W. H. v. d. WEL)

DATKOWNA, H. Osmotic pressure and fish embryos. Salmo trutta.

Illb. 2a. b. I.

Physico-chemical properties of embryos: the yolk. Salmo (Pisces),

Lacetta (Reptilia) and Gallus (Aves). Illb. 2c. c. V.

(in collaboration with Z. GRODZINSKI and K. SWIERZAWSKA)

DAVIES, D. H. Embryology of the commoner food Fishes of South Africa. I. 2a. I.

DEKKER, Miss A. Development of uterus and ovary in man. I. 17. M. (in collaboration with J. DANKMEYER)

DELANNEY, L. E. (data not yet received).



Dels 72 Eakin

DELSOL, M. Etude de Taction des antithyroidiens (thiouracil etc.) au de la vie larvaire et de la metamorphose des Batraciens. Discoglossus pictus. ▼. 2. J.

DESCLAUX, P. Developpement du diencephale; etude structurale en rapport avec l'apparition des fonctions. Rat. I. 9. M.

(en collaboration avec A. GIROUD et Mile J. TEYSSEYRE)

Influence teratogene des intoxications maternelles. Femme et rat.

(en collaboration avec A. GIROUD et C. MORLON) Hid. 2. M.

DETH, J. H. M. G. van Determination of sex in birds and mammals. Gallus domesticus and Cavia cobaya. IHb. 17. HV.

Oriqin of the asymmetry of the embryo. Gallus domesticus.

Ilia. lc.L.

Lens induction in vitro. Gallus domesticus. Ilia. 10. L.

Tooth development. Rat. Ilia. 8. M.

DETWILER, S. R. (data not yet received).

DEUCHAR, E. M. Regional induction in relation to cell-arrangement of primary organizer, using organizer tissue dissociated into separate cells which are aggregated again to form tissue. Triton alpestris. Ilia. 7. J.

DEVILLERS, Ch. (data not yet received).

DIDINGS, S. Embryology of Branchiopodes (esp. Crania). I. 2a. D.

DIETZ, D. Study of intra-uterine influences upon embryonic growth, differentiation, and organogenesis by means of ova and ovary transplants between races known to differ genetically in adult body size as determined by the general size factors and also by genetic factors affecting specific regions of the axial skeleton. Oryctolaguc cuniculus. IIIc. lb. M.

(in collaboration with P. B. SAWIN and F. AVIS)

DODDS, G. S. Development and growth of bones, with special reference the epiphyseal cartilages. General survey of epiphyseal cartilaqes in various bones and at different ages. Dog, cat, rat and man.

I.ll.M.

DOLLANDER, A. Etudes relatives a la regulation d'un blastomere II isole. Triturus helveticus. Ilia. lc. J.

Etude du revetement superficiel de l'oeuf. Triturus helveticus, Tr.

alpestris and Tr. cristatus. IHb. 4. J.

DRAGOMIROW, N. (data not yet received).

DREYER, Miss M. V. Epithelio-neural bodies in the chick. I. 9. L.

DUBOIS, Mile F. Migration des cellules de regeneration chez les

Planaires dulcicoles. Euplanaria lugubris (Plathelminthes).

IV. 2. C. DUSHANE, G. Ph. (data not yet received).

EAKIN, R. M. Development of the amphibian pituitary. Study of independent or dependent differentiation of the partes buccales and pars nervosa of the pituitary. Hyla regilla. Ilia. 18. J.

(assisted by Miss N. EATON, Miss E. OLDENBORG and W. THURMOND)

Survival of transplanted pituitaries in Amphibia (homoplastic and

xenoplastic). Hyla regilla. Hid. 2. J.

(in collaboration with M. HARRIS)



Eakin 73 Fankhauser

Studies on antagonism between host and transplanted tissues.

Survival of transplanted ovaries in rats (autogenous, sibling, intrastrain, homogenous and heterogenous). Rattus ncrvegicus (Mammalia) and Hyla regilla (Amphibia). Hid. 2. V. (in collaboration with M. HARRIS)

Studies in protein synthesis in the amphibian embryo. /. Uptake of

radio-active glycine. //. Uptake of radio-active methionine. Hyla regilla. Hlb. 2c. d. J.

EALES, Miss N. B. Mammalian embryology. I. 2a. M.

EBERT, J. D. Investigating the ontogeny of tissue antcgens by immunological techniques. Chick. Illb. 2a. h. L.

EDDS Jr. M. V. Study of factors influencing the spreading of intact axons in partially denervated muscles. Vertebrates. IV. 5. V.

Study of the influence of peripheral "load" on the diameter of

nerve fibers. Vertebrates. IV. 5. V.

EDWARDS, L. F. Origin and development of the human pharyngeal hypophysis. I. 18. M.

(joint problem with R. C. BAKER)

EEDEN. G. A. van Ontogenesis of the skull of Ascaphus tonei.

1.11. J.

ELSHOUT, Miss A. M. Listing and investigation of the historical collection of the Institute containing a large number of embryological preparations. Vertebrates. I. 2. V.

EMERSON WARREN, A. (data not yet received).

ENGLANDER, H. Regionale Induktion bei Urodelen. Ilia. 7. J.

ENTZ, B. A. G. Breeding experiments with pikeperch eggs, Lucioperca sandra cuv. et val., in moisture atmosphere. Illb. 2a. I.

Desinfection experiments on eggs. Fishes. Illb. lb. I.

FABER. J. Establishing of "normal stages" from fertilization till the end of metamorphosis (Normal Table). Xenopus laevis. I. 2a. J.

Influence of different kinds of food on the development of Xenopus

laevis. Illb. 2a. g. J.

FABIAN, G. Development of a new peiotropic mutant "bordo-sterile" in Drosophila melanogaster and the comparative embryology of normal and "bordo-sterile" eggs. IIIc. 3. D.

FALCONER, D. S. Development and morphology of a new mutant (crinkled) that affects hair and skin. Mus musculus. IIIc. 3. M. (in collaboration with A. S. FRASER)

Development and morphology of hair and skin mutants, particularly

the mimic hair-waving genes. Mus musculus. IIIc. 2. M.

(in collaboration with A. S. FRASER)

FANKHAUSER, G. Cytological study of polyploidizing effect of heat and cold on fertilized eggs, and of parthenogenetic cleavage induced by heat and cold treatment of unfertilized eggs. Triturus viridescens.

IIIc. 2. J.

Study of effects of triploidy on development of gonads. Triturus

viridescens. IIIc. 2. J.

Study of the reactions of diploid and triploid larvae to pituitary

hormones. Triturus viridescens. Illb. 2a. f. J.



Fankhauser 74 Fis

Thyroidectomy in diploid and triploid embryos. Effects of thiourea,

etc. Triturus viridescens. Hlb. 2a. f. J.

Study of progeny of triploid, tetraploid and other heteroploid individuals among axolotls. Ambly stoma mexicanum. IIIc. 2. J. (in collaboration with R. R. HUMPHREY)

FAURfi FREMIET. E. (data not yet received).

FAUTREZ, J. C. Experimental embryology of the otocyst and the microplacods of the cranial nerves. Amphibians. Ilia. 10. J.

Influence of ureum on the development. Amphibians.

Ilia. 2a. e. J. FAUTREZ— FIRLEFYN, Mrs N. J. P. E. Descriptive and cyto chemical embryology. Artemia salina (Phyllopode) . Illb. 2a. c. D. FEKETE, E. Method of ova transplants. Mus musculus. Nib. lb. M. FELL, Miss H. (data not yet received). FEREMUTSCH, K. Endhirnentwicklung, speziell d< I Rinde und Bau plan. Maus und Mensch. I. 9. M.

FERNALD, R. L. Blood Island-development and differentiation in

amphibians. Hyla regilla. Ilia. 15. J.

Ascidian development. Ascidiopsis paratropa. Ilia. 2a. H.

FERREIRA, W. A. Neuro-embryology. Bufo arenarum. Ilia. 9. J.

Experimental analysis of the development of the heart. Bufo arenarum. Ilia. 15. J. (in collaboration with R. E. GONZALEZ MARINO)

FILATOW, D. (data not yet received).

FILOGAMO, G. Study of the consequences of the removal of the secundary optic vesicle on the organogenesis and histogenesis of the optic lobe. Chick. Ilia. 9. L.

Histogenesis of the nervous cells of the sympathetic nervous system

of the intestinal tract. Sheep. I. 9. M.

FISCHBERG, M. Influence of maternal environment and cytoplasm on development of Drosophila-repeated transplantation of embryonic gonads between species. Drosophila buzzati and D. arizonensis (Insecta). IIIc. 2. D.

Experimental heteroploidy and partenogenesis in newts. Heteroploid newt hybrids — developmental potentialities and expression of species characters, sex determination. Triton alpestris and T. palmatus. IIIc. 2. J.

Heteroploidy in mammals. Spontaneous heteroploidy — analysis

of factors involved. Induced heteroploidy — methods of production. Viability of polyploid embryos. Physiological embryology of polyploid embryos. Mus musculus. IIIc. 2. M.

(in collaboration with R. A. BEATTY)

Transplantation of mammalian ova. Mus musculus. Ilia. lb. M.

(in collaboration with R. A. BEATTY)

FISK, A. The development of the ear and associated structures in the Lamprey (Cyclostomes). I. 10. I.

The development of parachordals and trabeculae in the Lamprey

(Cyclostomes) . I. 1 1 . I.

(in collaboration with Miss M. TRIBE)



Fit 75 Fri

FITZGERALD, L. R. Development of enzymes in grasshopper egg and embryo. Melanoplus differentialis (Orthoptera) . Illb. 2c. c. D.

Enzyme activities of embryo and extra-embryonic membranes of

chick and rat. Nib. 2c. c. HV.

FLEXNER, L. B. Placental transfer. Common laboratory mammals.

nib. 3. m.

Correlation of morphological, physiological and biochemical differentiation of fetal cerebral cortex and liver. Guinea pig.

Illb. 9. and 13. M.

FLICKINGER, R. A. Study of certain metabolic aspects of cell migration in vitro. (Glycolysis, respiratory quotient, effect of various metabolic inhibitors). Triturus torosus, Tr. rivularis and Amblystoma punctatum. Illb. 2b***. J.

FLORSCHOTZ, P. F. Normal development of Xenopus laevis; especially gastrulation and neurulation. I. 6. J. (in collaboration with P. D. NIEUWKOOP)

FONSECA SACARRAO, G. da Embryology of Cephalopods.

I. 2a. E. FORD, P. An experimental and morphological study of the development of the ear with special respect to the endolymphatic duct and glands of Swammerdam. Rana temporaria. Ilia. 10. J.

The relationship of the neural crest to the orientation of the ear.

Amblystoma tigrinum. Ilia. 7. J.

FRANCHI, C. M. Prospective organ-forming areas in the chick and rabbit blastoderms. Ilia. 2b**. HV.

(in collaboration with W. BUNO)

FRANKENBERGER, Z. Embryology of the cormorant, Phalacrocorax cavbo. I. 2a. L.

Embryology of Primates, esp. Gorilla. I. 2a. M.

FRAPPIER, J. Rdle de la vitamine E dans la reproduction. Rat et

souris. Illb. 17. f. M.

FRASER. A. S. Development and morphology of a new mutant (crinkled) that affects hair and skin. Mus musculus. IIIc. 3. M. (in collaboration with D. S. FALCONER)

Development and morphology of hair and skin mutants, particularly

the mimic hairwaving genes. Mus musculus. IIIc. 2. M.

(in collaboration with D. S. FALCONER)

FRASER, Miss E. A. (data not yet received).

FREEDMAN, R. M. Studies of differentiation by immunological and

other techniques. Triton alpestris. Illb. 2a. h. J.

FRICK, H. Placentation of Roussetus leschenaulti (Megachiroptera) .

II. 3. M. FRILLEY, M. Etude des capacites de developpement des differentes

parties de l'appareil genital des embryons, apres destruction des ebauches de l'hypophyse et des glandes genitales. Mammiferes. (en collaboration avec A. RAYNAUD) Illb. 17. f. M.

Recherches sur le developpement embryonnaire de la glande mam maire de la souris. Illb. 8. M.

(en collaboration avec A. RAYNAUD)



Fro 76 Giroud

FROUD, M. D. The development and inheritance of abnormalities of the aortic arches of the chick and their relation to hatching. Gallus domesticus. lilc. 2. L.

FUMAGALLI, Z. Ricerche sperimentali sulla morfogenesi dei gangli spinali (Anfibi e Anuri) . Ilia. 9. J.

GAILLARD, P. J. Developmental potenties of the human fetal germinal epithelium in explants. Ilia. 17. M.

Primary genesis of thyroid follicles in explants and factors governing colloid formation. Gallus domesticus. Illb. 18. L.

GALLERA, J. Transplantation of prechordal material. Triturus (Urodela). Ilia. 7. J.

Incubation of chick eggs under modified atmospheric conditions.

Gallus. Hid. 2. L.

GALLIEN, L. Etude de Taction des hormones sexuelles dans l'embryogenese sexuelle des Amphibiens. Discoglossus pictus et Pleurodeles Waltlii. Illb. 17. f. J.

GARRETT, F. D. Development of pharyngeal region. Homo. I. 14. M.

■ Segmental pattern and innervation of dermatomes. Homo.

Hid. 2. M.

GAZDA, A. The respiratory vessels of the yolk sac in the trout.

I. 15.1.

GEIGY, R. (data not yet received).

GEORGE, W. C. (no embryol. work in progress).

GERARD, P. (no embryol. work in progress).

GHIRETTI, F. S. Biochemistry of regeneration in Urodeles with special consideration of the activity of some enzymes during the determination of the blastema. Triturus cristatus. IV. 2. J.

GILBERT, Miss Chr. A study of the early development (somite stages) of Elephantulus myutus jamesoni with special reference to the landmarks in organization. I. 2a. M.

GILCHRIST, F. G. (data not yet received).

GILLMAN, J. Embryology in baboon. I. 2a. M.

GILMARTIN, Miss R. Development of oxidative enzymes in relation to nucleoproteins and various centrifugable elements in the amphibian embryo. Amblystoma punctatum and Rana pipiens. (under direction of E. J. BOELL) Nib. 2c. C. J.

GIROUD, A. Developpement du systeme nerveux central, surtout l'encephale et specialement le diencephale. Etude structurale en rapport avec l'apparition des fonctions. Rat. I. 9. M.

(en collaboration avec P. DESCLAUX et Mile }. TEYSSEYRE)

Recherches sur 1'influence teratogene des infections. Rat.

(en collaboration avec P. GIROUD, M. MARTINET Hid. 2. M.

et divers autres collaborateurs)

Recherches sur 1'influence teratogene des avitaminoses maternelles.

Rat. Hid. 2. M.

(en collaboration avec Mile J. BOISSELOT)

Recherches sur 1'influence teratogene des intoxications maternelles.

Femme et Rat. Hid. 2. M.

(en collaboration avec P. DESCLAUX et C. MORLON)



Giroud 77 Gro

fitude des cas teratologiques individuels y compris les tcratomes.

(cyclopie). Homo. Hid. 2. M.

(en collaboration avec A. LELIfcVRE et H. CHATTERJEE)

GIROUD, P. Recherches sur l'influence teratogene des infections. Rat. (en collaboration avec M. MARTINET, A. GIROUD Hid. 2. M.

et divers autres collaborateurs)

GLOOR, H. Development of a lethal character in Drosophila melanogaster (Insecta). IIIc. 3. D.

GODET, R. Action des hormones sexuelles dans l'embryogenese du tractus qenital et des qonades chez les Insectivores. Talpa europaeaL IIIb.l7.f.M.

GODINA, G. Study of the histogenesis of the various layers of the cortex of the different areas of the brain during embryonic and fetal development. (Golgi's method and Nissl staining). Sheep.

1.9. M.

GODLEWSKI, H. G. Cytochemical studies upon the ovogenesis of Coelenterata. Aurelia aurita. Ulb- 4. c. B.

The ultraviolet- and X-rays influence on spermatozoa under various

experimental conditions. Rana temporaria. IHb. 4. d. J.

GOLDSMITH, E. D. (data not yet received).

G6M6RY A. Reqenerative capacity of the optic nerve. Albino rat.

IV. 5. M.

GONZALEZ MARINO, R. E. Experimental study of the development of the heart. Bufo arenarum. Ilia. 15 J. (in collaboration with W. A. FERREIRA)

Sites of lipase activity in the chick embryo. IHb. 2c. c. L.

(together with the related work of W. BUNO and Miss J. ALVAREZ GUTTIfiRREZ)

GOODHART, C. B. The nature and mode of action of the evocator in amphibia. Ilia. 7. J.

The motive power behind morphogenetic movements. Amphibians.

Hlb. lc.J.

Resemblances between atypical regenerative and embryonic growth

and malignant tumours. Amphibia. Hid. 5. J.

GOODRICH, H. B. Investigation of the terminal phases of differentiation of color patterns in fish. I. 8. I.

GOSZWALD, K. Embryologische Studien an Ameisen. Formica rufa und andere Arten. *• 2a. D.

GRAHAM, G. L. (data not yet received).

GRAY, P. (data not yet received).

GREGG, J. R. Quantitative biochemical determination of yolk distribution in the axolotl gastrula. Amblystoma mexicanum. Illb. 2c. c. J.

GROBSTEIN, C. The behavior of tissues from the early mouse embryo in tissue culture and in the anterior chamber of the eye. Illb. 19. M.

GRODZINSKI, Z. Physico-chemical properties of the yolk. Salmo (Pisces), Lacerta (Reptilia) and Gallus (Aves). Illb. 2c. c. V. (in collaboration with K. SWIERZAWSKA and H. DATKOWNA)

Heart rate and temperature. Salmo. Illb. 15. d. I.



GROS CLARK, W. E. le (data not yet received).



Gru 78 Harab

GRUENWALD, P. Embryonic development of selenium-induced malformations. Chick. Hid. 2. e. L.

Systematic investigation of current cases of prenatal disease and

malformation in autopsy material. (Part of "Brooklyn Survey of Neonatal Pathology"). Man. Hid. 2. M.

GRONEBERG, H. Developmental genetics of the mouse skeleton (mutant genes and natural polymorphism of wild populations). Mus mttsculus. Hie. 2. M.

GUBBINS, J. F. Comparative developmental morphology of dog skulls. Canis familiaris. Ilia. 11. M.

GUSTAFSON, T. Continued studies on the protein chemistry of normal and lithium-treated developing sea urchin eggs. (Studies on amino acids, peptides and enzymes). Paracentrotus lividus, Psammechinus miliaris and other sea urchins. Illb. 2c. e. G.

Continued studies on the "dorsoventral" (oral-aboral) organization

of the unfertilized sea urchin egg. Echinocardium cordatum and other sea urchins. Illb. 4. G.

GUYENOT, E. Etude des potentialites des territoires de regeneration par la deviation des nerfs et par les transplantations; mecanisme de la duplicature. Triton cristatus. IV. 2. J.

GYLLENSTEN, L. J. W. Development of urinary bladder of homo: 1) openings of ureters and Wolffian ducts; 2) musculature.

I. 17. M.

Postnatal histogenesis of the lymphatic system under normal conditions and under the influence of experimental infections. Guinea pig. Hid. 2. M.



HADORN, E. Regeneration and differentiation of the notochord Triton species. Hla. 11. J

Merogony-experiments. Triton sp. IIIc. 2. J

Field organization of the genital imaginal disc. Drosophila species

Ilia. 17. D

Developmental analysis of lethal factors. Dcosophila sp. IIIc. 3. D

HALE, L. J. A study of some of the features of the evocation of the

scleral (sclerotic) bones in the chick embryo. This includes anatomical work, quantitative analysis of mitotic and degenerative activity, some histochemical investigations, and the experimental growth of isolated scleral bone primordia. Gallus domesticus.

Ilia. 10. L.

HALL, E. K. Further experimental modifications of muscle attachments

in Amblystoma. Hla. 12. J.

Development of technical procedures for experimental work on the

mammalian embryo. White rat. Ilia. lb. M.

HALL, R. E. (data not yet received).

HALL, T. S. Effect of chemical inhibitors on the development of amphibian eggs. Rana and Amblystoma. Illb. 2a. e. J.

HAMBURGER, V. Control of proliferation and differentiation of the nervous system. Chick. Hla. 9. L.

(in collaboration with Mrs R. LEVI— MONTALCINI)

Stage series of chick embryo. I. 2a. L.



Hami 79 Har

HAMILTON. Howard L. Completion of some work on the developmental physiology of the squid, Loligo pealli (Cephalopoda).

Illb. 2a. E.

Revision of Dr Frank R. LILLIE's textbook of embryology. "The

Development of the Chick". Gallus domesticus. I. 2a. L.

HAMILTON,, W. J. Descriptive embryology. Mammals. I. 2a. M.

Early development. Mammals. Ilia. 2a. M.

HAMMOND, W. S. Development of the autonomic nervous system.

Gallus domesticus. Ilia. 9. L.

Differentiation of sensory neurons. Gallus domesticus. Ilia. 9. L.

Development of the thymus. Gallus domesticus. Ilia. 18. L.

Effects of sulfa drugs on mammalian embryo. Mus musculus.

Hid. 2. M.

HAMPE, A. A. Effet de faibles doses d'hormones femelles sur le

developpement du testicule de poulet. Difference entre la lere et

la 2eme poussee de cordons sexuels. Illb. 17. f. L.

Experimentation sur la lere et la 2eme poussee de cordons sexuels.

Poulet. Ilia. 17. L.

HARDE, ... Entwicklungsfragen am Kaninchenhim. I. 9. M.

HARKMARK, W. Morphological and experimental investigation of

the pontine and inferior olivary nuclei in birds. Gallus domesticus.

Ilia. 9. L. HARRIS, M. Studies on antagonism between host and transplanted

tissues. Survival of transplanted ovaries in rats (autogenous, sibling,

intrastrain, homogenous, and heterogenous). Rattus notvegicus.

(in collaboration with R. M. EAKIN) Hid. 2. M.

Studies on antogonism between host and transplanted tissues. Survival of transplanted pituitaries in amphibia (homoplastic and xenoplastic). Hula regilla. Hid. 2. J. (in collaboration with R. M. EAKIN)

HARRISON, R. G. Development of limbs of Amphibia with reference to the roles played by ectoderm and mesoderm. Amblystoma (various species). Ilia. 2b. J.

Induction and symmetry relations in the development of the internal ear. Amblystoma punctatum. Ilia. 10. J.

HARTMAN, C. G. (no embryol. work in progress).

HARTMAN, J. F. Physiology of digestion in fetal rat, Rattus nor vegicus albinus. Illb. 13. g. M.

(in collaboration with L. J. WELLS) HARTWIG, H. Analyse der einzelnen unter dem Einfluss des Schild drusenhormons erfolgenden Differenzierungs- bzw. Reduktions vorgange. Vertebraten. V. 2. V.

Einfluss elektrischer Strdme auf die friihesten Entwicklungsstadien

der Amphibien. Illb. 2a. d. J.

HARVEY, E. B. Centrifuging eggs, and development of fractions obtained by centrifugal force. Parthenogenetic mercgony. Development of pluteus larva. Arbacia punctulata. Illb. 2b*. d. G.

Monograph on Arbacia punctulata, including classified compilation

of all experimental work, (in preparation). Illb. 2a. G.

HARVEY. E. N. (data not yet received).



Hay 80 Herr

HAY, Mile D. Etude d'un Free-martin naturel. Boeuf. I. 17. M.

HAYES, E. R. Histochemistry of development of selected species of various vertebrate classes, of various organs and tissues under varying physiological and pathological states, of metamorphosis, regeneration and senescence. Vertebrates. Illb. 2c. c. V.

HEAYSMAN, Miss J. E. M. Factors involved in the development of the shell in the mollusca. Paludina viviparus, Helix pomatia and Nucella labillus. I. 8. E.

HEILBRUNN, L. V. A study of the factors which cause initiation of development. Atbacia punctulata (Echinoidea) and Chaetopterus pergamentaceus (Polychaeta). Illb. 4. EV.

HEIMANN, H. Endhirnentwicklung. Teleostier. I. 9. 1.

HENKE, K. Embryonale und post-embryonale Entwicklungsgeschichte und Entwicklungsphysiologie bei Insekten, Mollusken, Amphibien und Aves. Illb. 2a. D, E, J. and L.

(mit Mitarbeiter)

HENLEY, C. Chromosomal mosaicism and abnormalities of mitosis produced by experimental temperature shock on the developing embryos of the California salamander, Triturus torosus. IIIc. 2. J.

An investigation of natural and experimentally-induced heteroploidy

in Amblystoma punctatum, including the effects of phenylthiourea on mitosis. Hie. 2. J.

(in collaboration with D. P. COSTELLO)

HERLANT— MEEWIS, Madame H. Regeneration. Reproduction asexuee. Formation des cellules sexuelles. Developpement embryonnaire. Eponges. Ilia. 2a. A.

(en collaboration avec P. BRIEN)

Regeneration. Reproduction asexuee. Formation des cellules sexuelles. Developpement embryonnaire. Oligochetes. Ilia. 2a. C. (en collaboration avec P. BRIEN)

HERRICK, Ch. J. (data not yet received).

HERRMANN, H. Metabolic interaction between tissues. Exchange of metabolites between tissue components (epithelium-stroma) with different degrees of oxidative or anaerobic metabolism. The investigation is carried out with model tissues, such as cornea, as well as with tissue-cultures. Higher Vertebates(?). (in collaboration with S. COHEN) Illb. 2b***. b. HV.(?)

The chemistry of muscle differentiation. Fractionation of proteins,

determination of nucleic acids in mitochondria, nuclei and cytoplasm of muscle tissue in differentiated state at various stages of differentiation of fibrils and cross-striation during development of isolated somites and undifferentiated mesoderm. Chick.

(in collaboration with S. COHEN) HIb. 12. C. L.

The metabolic maturation of human liver. The capacity to synthesize creatine from glycocyamine and methyl donors is tested with livers of human feti of different inauterine age. Illb. 13. b. M. (in collaboration with S. COHEN)



Hert 81 Holter

HERTIG, A. T. A morphologic, descriptive study of human embryos, both normal and abnormal found in surgically removed uteri, in age ranging from 1 to 16 days of age. L 2a. M.

(in collaboration with J. ROCK for the past 10 years)

Description of two human ova; a 2-cell tubal specimen and a

blastula of 4J/2 days of age which have been recovered this past year. L 2a. M.

HETTIG, R. A. The production of hemopoietic and other anomalies

in rat embryos by nitrogen mustards. Mus norvegicus. Hid. 2. M. HEUSER, C. H. Morphology of early human and other primate

embryos. Homo, Pan, Papio and Macaca rhesus. I. 2a. M.

HEY, D. (no embryol. work in progress). HEYN, C. B. Permeability of the placenta in rat and guinea-pig.

Investigation with isotopes. Illb. 3. M.

(in collaboration with J. DANKMEYER)

HIBBARD, H. (data not yet received).

HILL, J. P. The egg-tooth and caruncle of the Monottemes. II. 8. M.

(in collaboration with G. R. de BEER) HILLER, S. Regeneration in Amphibians. The influence of inanition

on that phenomenon. IV. 2. J.

(in collaboration with E. H. WISKONT and T. KROTKIEWICZ)

Developmental physiology of the pronephros in Amphibians.

Illb. 17. J. HINTZSCHE, E. Eierstock, Menstruation, funktioneller Bau von Tube

und Uterus. Homo. I. 17. M.

HISLOP, F. M. Morphological and experimental investigation of

coiling in Limnea pevegra. IIIc. 2. E.

HJELMMAN, G. Development and appearence of the heparinocytes.

Human and other mammal embryos. I. 13. M.

HOADLEY, L. (data not yet received). HOCHSTETTER, F. (data not yet received). HOGEWONING, C. H. Influence of vitamin D. on the calcification

of developing bone-tissue in explants. Gallus domesticus.

nib.U.f.L.

Influence of estrogens on the development and calcification of

embryonic endosteal tissue in vitro. Gallus domesticus.

Illb. 11. f. L. HOGUE, Miss M. J. Study of neurons and glia cells from the different parts of the brain, especially from the cerebellum. Also, the survival of neurons after death of the fetus. Chick and Homo sapfens-human fetuses and newborn babes and adult monkey rhesus and spider). (in collaboration with S. C. WILLIAMS) IHa. 9. L. and M.

HOLMDAHL, E. (data not yet received).

HOLST CHRISTENSEN, P. J. Studies on the embryology of Insects. Cochlidion limacodes (Lepidoptera) . I. 2a. D.

Studies on the development of mammalian lungs. Talpa europaea

(Insectivora). I. 14. M.

HOLTER, H. Localization of cell constituents in amphibian egg.

Illb. 2c. J.



Holtfr 82 Hum

HOLTFRETER, J. K. F. Effects of carcinogens on successive developmental stages of amphibian embryos. Hid. 2. J.

HOOKER, D. (data not yet received).

HORN, E. C. Embryology and development of Haploscoloplos bustoris (Polychaeta). II. 2a. C.

(in collaboration with C. G. BOOKHOUT)

HORST, C. J. van der The placentation of Elephantulus myurus jamesoni. I. 3. M.

Elephantulus myurus jamesoni going into anoestrus. I. 17. M.

Post-partum phenomena in Elephantulus myurus jamesoni. I. 17. M.

The placenta of Tupaia jauanica. I. 3. M.

HORSTADIUS, S. Analysis of the gradients and the processes behind

them in the sea urchin egg. Illb. lc. G.

Investigations if there occur any changes in the nucleus in course

of differentiation. Sea urchin egg. Illb. 19. G.

HOUSSAY, B. A. (data not yet received).

HUANG, A. C. (data not yet received).

HUBER, W. Recherches experimentales sur le developpement de la tete chez le Poulet, Gallus domesticus. Ilia. 2b. L.

(en collaboration avec E. WOLFF)

HUBL, H. Geschwulstproblem, bearbeitet durch Regeneration und Transplantation an Lumbricus (Annelida). Hid. 5. C.

HUESTIS, R. R. Investigations on the development of several asymmetrical mutations involving the tail and the eye in Peromyscus, the deer mouse. Hie. 3. M.

HUGON de SCOEUX, Mile F. Essai de filtration, "in vivo", de la substance inductrice a l'aide de membranes de porosite connue, sur des explantats de jeunes gastrulas. Axolotl (Urodeles) . Illb. 7. d. J.

HUIJBERS, Miss M. M. Investigations to the function of the gonad in the c/izc/c-embryo by implantation and castration experiments.

Illb. 17. L.

HULTIN, J. M. T. Nitrogen metabolism in early sea urchin development studied by means of N-labelled ammonia. Illb. 2c. b. G.

Protein turnover of different cell fractions of chicken liver studied

by injection of N-labelled amino acids. The liver is afterwards homogenized and fractionated by centrifugation. Illb. 13. c. L.

HUMMEL, Miss K. P. Studies on the form and function of ovaries which have been grafted into spleens of castrates and subsequently retransplanted into normal position within the ovarian capsule of a normal mouse. Offspring of these ovaries are examined for abnormalities which may be correlated with the time the graft remained in the spleen. Mus musculus. Hid. 2. M.

(in collaboration with C. C. LITTLE)

HUMPHREY, R. R. Studies on spontaneous haploidy and polyploidy. Amblystoma (Siredon) mexicanum. IIIc. 2. J.

The offspring of polyploids; their chromosome number, mortality,

pathology, etc. Amblystoma (Siredon) mexicanum. IIIc. 2. J.

Study of progeny of triploid, tetraploid an other heteroploid individuals among axolotls. IIIc 2. J. (in collaboration with G. FANKHAUSER)



Hux 85 Ki

HUXLEY. J. S. (data not yet received). HYDfiN. H. (data not yet received).

IMMERS, }. Biochemistry of fertilization, espec. on carbohydrates metabolism. Echinus esculentus, Echinocardium cordatum, Strongylocent. droeb., Paracenttotus tividus, etc. Illb. 4. b. G.

Enzymatic destruction of jelly coat substances of the eggs. Echinocardium cordatum, Echinus esculentus, Brisopsis lyr., etc. Illb. 4. G.

INCE. Miss F. E. (data not yet received).

JANSEN, J. Morphological investigation of the cetacean nervous system, particularly the development of the cereb^lum. Balaenoptera musculus. I- 9. M.

JANSSENS, J. Development of the neural system of Balanoglossus kowalewskii (Enteropneusta) . I. 9. F.

(in collaboration with G. VANDEBROEK)

JOHNELS, A. G. Development and morphology of the skeleton of the head. Petromyzon (Cyclostomes). I. 11. I.

Observations on the connective tissue of the head. Petromyzon

(Cyclostomes). I. 16. I.

JOHNSON, M. W. Transplantation of early mammalian embryonic rudiments. Cricetus auratus. Ilia. 2b**. M.

Effect of certain carcinogens on regeneration. Amphibians. IV. 2. J.

JOLLY, J. (no embryol. work in progress).

JORDAN, H. Respiratory malformations (anomalies): Causes, clinical and pathological significance. Homo sapiens. Hid. 4. M.

JOST, A. D. Developmental physiology of the mammalian fetus. Foetal endocrinology and morphogenesis. Rabbit, rat and hamster.

Illb. 17. f. M.

KAELIN, J. (data not yet received).

KALSBEEK, F. Development of foot and hand in man. I. 2b. M.

KAMER, J. C. van de Normal development of pineal organ and paraphysis. Amblystoma mexicanum and Xenopus laevis. I. 9. J.

Comparative embryoloqical study of pineal cytology. Vertebrates.

II. 9. V.

Experiments concerning the determination of pineal organ and

paraphysis. Amblystoma mex., Triton taeniatus, Tr. alpestris and Xenopus laevis. Ilia. 9. J.

KAUDEWITZ, F. Determination der Furchung und Sonderung der

Organanlagen bei Daphnia (Crustacea). Ilia. 5. D.

KEMP, Norman E. Development of coiling in the intestine of anuran

tadpoles. Rana pipiens. \\\a. 13. J.

■ ■ Utilization of yolk during morphogenesis of amphibians. Rana

pipiens and Amblystoma maculatum. Illb. 2c. c. J.

KERKHOF, Miss A. M. Influence of gonadal hormones on the develop ment of the female genital system in the rat. Illb. 17. f. M.

KERR, J. Graham (data not yet received). KING, Miss H. D. (data not yet received). KINDAHL, Miss M. E. The development of the teeth. Insectivora.

I. 8. M.



Kl 84 Krompecher

KLAPPER, C. E. Development of the pharyngeal derivatives. Syrian

hamster. I. H. M.

KLOFT, W. Embryonic development and metamorphosis of Tropinota

hirta (Coleoptera). I. 2a. D.

V. 3. D. KNIEP, Mrs M. A. Embryology of Pedetes caffec (Rodentia).

I. 2a. M. KNOUFF, R. A. Histochemistry of amphibian development and metamorphosis. Illb. 2c. c. J.

Contributions of the neural crest and epibranchial placodes to the

origin of cranial ganglia in mammals. I. 9. M.

KOLLROS, J. J. (data not yet received). KOLTZOFF, N. K. (data not yet received).

KONOPACKA, B. The behavior of yolk and its different components in developing fish embryos. Ciprinus carpio. Illb. 2c. c. I.

Histochemistry of mammalian eggs. Mouse and Homo.

Illb. 2c. c. M.

KOPSCH, E. (data not yet received).

KORNFELD, V. Histogenesis of neuroglia. Vertebrates. I. 9. V.

KRABBE, K. H. Continuation of my paper (in 4 volumes) on development of the brain in fetal life. Vertebrates. II. 9. V.

KRAHELSKA, J. Implantation of blastocysts in Rhodentia. Ilia. 3. M.

KRAlNSKA, M. K. A cytochemical study of the Insect egg (esp. the glycogen formation) during maturation and development. Cynipidae and other Insects. Illb. 2c. c. D.

KREDIET, G. Development of genital tract and gonads in domestic animals. Birds and Mammals. I. 17. HV.

KREMER, Miss A. Analysis of the neural induction. Transfer of the inductive substances in horizontal direction through the presumptive neural plate, (heteroplastic transplantation of ectoderm) Triturus taeniatus, alpestris and cristatus. Ilia. 7. J.

(in collaboration with P. D. NIEUWKOOP and Miss E. BOTERENBROOD)

KROMPECHER, S. Experimental and clinical new-formation of articulations. Embryology, regeneration, new-formation. Causal and functional analysis; biological synthesis gained by the effect of directed regenerative potency. Man, dog and rabbit. IV. 5. M.

The qualitative adaptation of the surface of embryonic cartilage

and bone, due to the influences of surrounding tissues. Exper. alteration of these circumstances. A causal and functional analysis on human embryos and young animals. Man and cat. Ilia. 11. M. (in collaboration with L. NEBEL)

The development of the oesofagus epithelium and musculature in

its causal and functional aspect. An initial study to regenerative work. Man and rat. I. 13. M.

Changes in the proctal epithelium in its embryonic and postfetal

development, in grown up individuals of different ages, and under pathological circumstances, with special regard to its microtopographic situation. Adequate experiments on animals. Man and dog. (in collaboration with Z. ZAKARIAS) Ma. 13. M.



Krompecher 85 Lar

The morphological and microchemical development of the epithelial

fat of the skin, with special regard to the vernix caseosa. Man. (in collaboration with A. BOD) 1- 8 - M KROPP, B. N. Development of vascular pattern of teeth, mouth and face. Homo. I. 15. M.

Development, structure and functions of trophoblast. Homo. Rattus

and Lepus. Hla. 3. M.

KROTKIEWICZ, T. Regeneration in Amphibians. The influence of inanition on that phenomenon. IV. 2. }.

(in collaboration with S. HILLER and E. H. WISKONT)

KRUGELIS, Miss E. J. Alkaline phosphatase activity during development. Amblystoma mexicanum and Xenopus laevis. Mb. 2c. c. J.

KRZANOWSKI, A. Embryological metamery of insect head. Periplaneta orientalis, (Blattodea). I. 2b. D.

KRZYSZTOFOWICZ, A. Early developmental stages of Insects. Polydrosus sericeus (Coleoptera) . I. 2a. D.

KOHN, A. Wundheilung und Regeneration bei Ephestia (Ptychopoda) Lepidopteren. IV. 2. D.

Entwicklung der Schuppen von Ephestia (Ptychopoda) Lepidopteren bei verschiedenen Mutanten und unter experimentellen Bedingungen. Hie. 3. D.

KURKIEWICZ, T. Histogenese de la corticosurrenale. Rat.

Ilia. 18. M. KUTSKY, P. B. Phosphorus metabolism in the amphibian embryo studied with radioactive phosphorus. Rana pipiens. Mb. 2c. d. J. KUUSI, Miss T. The chemical nature of the specific inductive substances (isolated from liver and kidney of the guinea-pig). Triton.

Mb. 7. J.

LALLIER, R. A. Action du Lithium sur le developpement embryonnaire. Triton and Axolotl (Urodeles). Mb. 2a. e. J.

L'induction chez les Amphibiens. Triton and Axolotl Mb. lc. J.

LANDAUER, W. Developmental studies on various mutants of fowl,

such as "duplicate", "creeper chondrodystrophy", etc. Gallus domesticus. Mc. 3. L.

A causal analysis of teratogenic action of insulin on developing

chicken embryos. Gallus domesticus. I lid. 2. L.

LANGEVOORT, H. L. Development of paraphysis in birds and the circulation of the cerebrospinal fluid. Gallus. Mb. 9. L.

LANGMAN, J. Transplantation of cultivated endocrine organs. Differences caused by autologous, heterologous and homologous media. Vertebrates. Mb. 18. V.

LARAMBERGUE, M. de Recherches sur le developpement embryonnaire de l'appareil genital hermaphrodite de divers Gastropodes; differentiation des gametes. Calyptraea (Prosobranches) et Pulmonis divers. Ma. 17. E.

Recherches sur le developpement compare de l'appareil genital des

formes euphalliques et aphalliques chez Bulinus truncatus (contortus), (Gastropodes Pulmones). II. 17. E.

Recherches genetiques des races euphalliques et aphalliques chez

Bulinus truncatus (contortus), (Gastropodes Pulmones). Mc. 3. E.



Lat 86 Leh

LATIMER, H. B. Some anomalies found in a series of 180 fetal dogs.

nid. 2. m.

Prenetal growth and differentiation of the organs (brain, cord,

hypophysis, etc.) in the fetal puppy. Ilia. 19. M.

(in collaboration with R. CORDER)

Growth of the organs and systems of the rabbit in the prenatal

and postnatal periods. Ilia. 19. M.

Statistical study of the parts of the nervous system and of the

endocrine glands in the guinea pig. Ilia. 19. M.

LAVELLE, A. Development of chromophil substance in central nervous system. Guinea pig and man. I. 9. M. (in collaboration with W. F. WINDLE)

LEACH, W. J. Studies in progress on the development of the endocrine organs in the Cyclostomes and their histophysiology during metamorphosis. I. 18. I.

LEBEDINSKY, N. G. (data not yet received).

LEDUC, Miss E. H. A study of mitotic activity and other cytological phenomena in liver regeneration. Vertebrates. IV. 2. V.

LEE, G. M. Development of the central and peripheral nervous system in relation to behavior patterns along Coghillian lines of investigation. Amblystoma punctatum. (in collaboration with P. G. ROOFrJ,)

LEGHISSA, S. Study of the cortex of Ascidian eggs. Illb. 4. H.

Fusion of blastomeres. Ascidians. Ilia. 2b*. H.

Differentiation and morphology of nervous tissue in Coelenterata.

1.9. G.

Differentiation and morphology of nervous tissue in Vertebrates.

I. 9. V.

Effects of antimitotics on the regeneration of peripheral nerves.

Amphibians. IV. 5. J.

(in collaboration with P. PASQUINI)

Regeneration of peripheric-nerves and of the spinal cord in Fishes

and other Vertebrates. IV. 5. V.

Effects of antimitotics on metamorphosis of Amphibians. V. 2. J.

LEHMAN, H. E. Investigation of problems relating the behavior,

differentiation and metabolism of Amphibian pigment cells, and the analysis of factors relating to the establisment of specific pigment patterns of larvae and adults. Species of Amblystoma and Triturus. Illb. 8. J.

Investigation of the relation of external media and physical surfaces

on the migration and differentiation of Amphibian tissues in vitro. Species of Amblystoma and Triturus. Illb. 19. J.

LEHMANN, F. E. Allometrisches Wachstum bei Amphibien. I. 19. J.

(in Zusammenarbeit mit diversen Mitarbeiter) The influence of chloramine-compounds on the early development

(neurulation and embryo- formation) of the Amphibian egg. Triturus

alpestris and Tr. taeniatus. Ilia. 2a. e. J.

(in collaboration with P. D. NIEUWKOOP)

Schwanzregeneration von Xenopus, normal und chemisch beein flusst. (in Zusammenarbeit mit diversen Mitarbeiter) IV. 4. J.



Lei 87 Linds

LELlEVRE. A. Etude des Teratomcs. Homo. Hid. 2. M.

(en collaboration avec A. GIROUD et A. CHATTER JEE) LENDER, Th. Regeneration des yeux chez les Planaires. IV. 5. C. LENNEP, Jhr E. W. van Development of the gonads and genital tract

in whales. I- 17. M.

LEPORI, N. G. Fertilization and Cytology in Planarians. Polycelis

nigra (Tricladida). I. 4. C.

LEVI, G. H. Recherches sur les transformations qui se produisent dans

les organismes et dans les tissus cultives in vitro pendant l'accrois sement. Vertebres. Ilia. 19. V.

Recherches sur les caracteres de la structure et des proprietes bio logiques dans les tissus cultives in vitro. Vertebres. Ilia. 19. V.

LEVI— MONTALCINI, Mrs R. Origin of sympathetic and parasympathetic nervous system. Chick and Reptilians. Ilia. 9. HV.

Control of proliferation and differentiation of the nervous system.

Chick. Ilia. 9. L.

(in collaboration with V. HAMBURGER)

LEWIS, F. Th. The shape of cells in certain early embryonic tissues. Chick, rabbit and man. I. lc. M.

An embryological study of human tracheo-oesophageal fistula.

Hid. 4. M.

LEWIS, W. H. (data not yet received).

LI, Miss S. C. To study the influence of the optic vesicle on the development of head skeleton and accessory organs of the eye ball, by extirpation of the optic vesicle at tail bud stage. Rana nigromaculata. Ilia. 11. J.

LIAO, Y. K. The reactive capacity of Rana nigromaculata to abnormal inductor seems to be weaker than that of Triton. In order to find out whether the ectoderm of Rana is less sensitive to inductive stimuli Holtfreter's experimental method (1947) was adopted. Isolated gastrular ectoderm of Rana was given a treatment with acid and alkali solution of various concentration for various length of duration. Thus it will be found whether the ph ranks which cause neural differentiation in Triturus (or Amblystoma) and in Rana ectoderm are different. Furthermore, the cause why Triturus and Rana ectoderms react differently to the same ph rank will also be studied. IHb. 7. J.

LILLIE, R. S. (data not yet received).

LINDAHL, P. E. Large scale separation of macromeres, mesomeres and micromeres of the developing sea urchin egg. Ilia. 2b*. G.

Changements of dehydrogenase system at fertilization of the sea

urchin egg. *"b. 4. c. G.

The biochemical mechanism of the animalization of the unfertilized

sea urchin egg. \\\b. 4. b. G.

LINDBERG, N. O. H. On surface reactions of the sea urchin egg with special attention to phosphate-metabolism. On the dehydrogenase systems of the sea urchin egg. IHb. 2a. b. G.

LINDSTROM, T. J. J. V. Development and anatomy of the ganglia and peripheral nerves of the trigeminal complex and the trigeminal and facial muscles. Bdellostoma and Petromyzon (Cyclostomes) .

II. 9. I.



Lindv 88 Mar

LINDVAIL, S. Studies on the proteins of unfertilized and the first stages of fertilized sea urchin eggs. Illb. 4. c. G.

LIOSNER, L. D. (data not yet received).

LIPSCHOTZ, A. (no embryol. work in progress).

LITTLE, C. C. Studies on the form and function of ovaries which have been grafted into spleens of castrates and subsequently retransplanted into normal position within the ovarian capsule of a normal mouse. Offspring of these ovaries are examined for abnormalities which may be correlated with the time the graft remained in the spleen. Mus musculus. Hid. 2. M.

(in collaboration with Miss K. P. HUMMEL)

LIU, J. C. Regeneration in mammalian central nervous system. (Recovery of neurons following trauma, alteration in their internal environment). Car and dog. IV. 5. M.

(in collaboration with W. F. WINDLE and several other coworkers)

LOPASHOV, G. (data not yet received).

LQVTRUP, S. Cytochemistry of amphibian eggs. Amblystoma mexi~

canum and Xenopus laevis. Nib. 2c. c. J.

LUNDBLAD, ... Investigation on the nature of the sperm- factor which

brings about the fluidification of the jelly layer surrounding the

eggs. Echinodermes. Illb. 4. c. G.

(in collaboration with A. MONROY)

LUSCHER, M. (data not yet received).

LUTZ, H. La polyembryonie et la monstruosite double experimentales

chez les oiseaux. Ilia. lc. L.

LUYENDIJK, W. Development of diencephalon and hypophysis in

man. I. 9. M.

(in collaboration with J. DANKMEYER and J. W. H. BOUR)

LYON, M. F. The developmental effect of the "pallid" gene on the inner ear of Mus musculus. IIIc. 3. M.



MACS, Miss K. Development of lateralis system. Triton cristatus and T. punctatus (Urodela), Rana agilis, R. arvalis and Bufo vulgaris (Anura). II. 8. J.

MALAN, M. E. Development of palate of the nightjar, Nyctisyrigmus pectoralis. II. 13. L.

MANGOLD, O. (data not yet received).

M ANTON, S. M. Embryology of Peripatus (Onychophota) . I. 2a. C.

MARCHLEWSKI, J. H. Intergeneric crosses in birds by means of artificial insemination. Gennaeus nycthemerus and Gallus domesticus. IIIc. 2. L.

Artificial inseminations with semen stored in different conditions.

Gallus domesticus. Illb. 4. L.

MARLIER, G. Metamorphoses. Insectes aquatiques. V. 3. D.

MARTINET, M. Recherches sur l'influence teratogene des infections. Rat. Hid. 2. M.

(en collaboration avec P. GIROUD et A. GIROUD et divers autres collaborateurs)



Mas S9 Mon

MASY. ... Experimental analysis of the development of the appendicular skeleton in the chick embryo. Ilia. ll.L. MAZANEC. K. Young human embryos. I. 2a. M

Cultivation of mammalian eggs. Illb. lb. M.

MENSCHIK, Z. The embryos and fetuses of normal, vitamin E deficient and vitamin E-rich guinea-pigs are being investigated histologically and histochemically with special reference to the distribution of lipids and carbohydrates, in order to find out the influence of vitamin E on the development and on the lipid and carbohydrate metabolism. Cavia cobaya (Rodentia). Illb. 2c. f. M.

METZ, C. B. Role of fertilizin and anti-fertilizin in fertilization: Mechanism of adjuvant-fertilizin agglutination of starfish sperm, specificity of antifertilizin in echinoids, agglutination of eggs and sperm by basic proteins. Various marine Invertebrates, including asteroid and echinoid echinoderms. Illb. 4. EV.

MEYER, ... de Embryol. development of the nodal tissue in the avian heart. I. 15. L.

MICHELI, A. Origine du noyau tangentiel du nerf vestibulaire. Son origine. Poissons et oiseaux. II. 9. V.

(en collaboration avec M. NEIGER)

MIETKIEWSKI, C. Les transformations de la glande interstitielle du

testicule au cours de son developpement. Cobaye. Ilia. 17. M.

MILLARD, N. A. H. Complete development of the veins and arteries.

Xenopus laevis. I. 15. J.

MINGANTI, A. The role of induction and morphogenetic movements

in the brain and pigment spots formation in Ascidians. Ilia. lc. H.

(in collaboration with G. REVERBERI)

The development of Ascidian hybrids. IIIc. 2. H.

Development of nucleic acids and phosphatases in Limnaea stag nalis. I. 2c. c. E.

MOLEN, L. A. v. d. Development of the eye in Tarsius spectrum.

(development of functional adaptations). I. 10. M.

MOLL, J. Hybridization in Triturus alpestris and taeniatus. IIIc. 2. J.

Knee-joint development in Homo. I. 11. M.

Relations between organweight and bodyweight in ontogeny. Various mammals. II. lc. M.

MONNfi, L. Correlations between structure and function of the cytoplasm. Sea urchins. Illb. 2c. G.

MONROY, A. Investigations on the biochemistry of fertilization in sea urchin eggs with special consideration to the changes occurring in proteins. Illb. 4. c. G.

Investigation on the nature of the sperm-factor which brings about

the fluidification of the jelly layer surrounding the eggs. Echinodevmes. Illb. 4. c. G.

(in collaboration with LUNDBLAD)

MONROY — ODDO, Mrs A. Behaviour and importance of Potassium during fertilization of the sea urchin egg. Paracentrotus and Atbacia. Illb. 4. c. G.

MONTALENTI, G. Determinism of meiosis. Asellus and other species (Crust, hop.). Illb. 4. D.



Moo 90 Nee

MOOG, F. Patterns of development of enzymes in embryos; differentiation of enzymes in relation to differentiation of functional ability in embryonic organs. Rana pipiens and Gallus domesticus.

Illb. 2c. c. J.andL.

Radioactive tracer study of the metabolism of amphibian eggs, with

special reference to the organizer. Illb. 7. b. J.

(in collaboration with E. L. WENGER)

MOOKERJEE, S. Experimental study of the origin and relation to surrounding tissue of the notochord in Amphibia. Triton alpestris.

Ilia. 2b**. J.

MOORE, A. R. On the origin and nature of the precursors of eggmembranes in echinoidea. Dendrastet excentricus and Strongylocentrotus purpuratus. Illb. 4. G.

The form of the pluteus in sea urchin hybrids. Study of skeletal

development and body form. Strongylocentrotus purpuratus, S. franciscanus and Dendraster ezcentricus (Echinoidea). Ilia. ll.G.

MOORE, C. R. (data not yet received).

MORGAN, Miss M. R. A study of artificially produced duplicitas

anterior. Gallus domesticus. Ilia. lc. L.

(in collaboration with M. ABERCROMBIE) MORLON, C. Influence teratogene des intoxications maternelles. Rat.

(en collaboration avec A. GIROUD et P. DESCLAUX) Hid. 2. M.

MOSSMAN, H. W. Regeneration of the ovary of mammals. Mus

rattus, Lepus cuniculus, Erethizon dorsatus, and probably others.

IV. 5. M.

Comparative morphology of the fetal membranes and reproductive

tracts in Mammals. II. 3. and 17. M.

MULNARD, J. Cytochemical observations on oogenesis and development of Acanthocelides (CI.) and Drosophila (Dipt.). II. 2a. D.

Study of the nucleoles of the giant cells of Diptera (Insecta).

II. 2c. D. MURRAY, P. D. F. Histogenesis of fusion of parallel bones. Hula,

(Amphibia), Rattus (Mammalia), etc. I. 11. V.

MUSTAKALLIO, M. On the appearence of elastic tissue in the vessels

of human foetus. I. 15. M.

NACE, G. W. Plasma proteins during development in the chick embryo, (in collaboration with A. M. SCHECHTMAN) Illb. 2c. C. L.

NAGY, I. Researches on the time of appearing of lipoids in the embryonic cartilages. Verfe6rares. Illb. 1 I.e. V. (in collaboration with Gy. SAVAY and L. BEREK)

NATER, H. Structure and development of genitalia in different species of Drosophila (Insects). II. 17. D.

NEBEL, L. The qualitative adaptation of the surface of embryonic cartilage and bone, due to the influences of surrounding tissues. Exper. alteration of these circumstances. A causal and functional analysis on human embryos and young animals. Man and car. (in collaboration with S. KROMPECHER) Ilia. 11. M.

NEEDHAM, A. E. (data not yet received).

NEEDHAM. J. (data not yet received).



Nei 91 Nieuwkoop

NEIGER, M. Developpement du noyau tangentiel du nerf vestibulaire — son origine. Poissons, Batraciens, Reptiles et Oiseaux. II. 9. V. (en collaboration avec A. MICHELI)

NELSEN, O. E. The cumulative of oxygen-pressure and the production of various degrees of blocking of the processes of gastrulation in the embryo of the frog, Rana pipiens. IHb. 6. d. J.

NEWELL, G. E. Breeding habits, embryology and larval life-history of Arenicola marina and Clymenella torquata (Polychaetes). (completion of previous work published in: J. Mar. Biol. Assc. 1948) I- 2a. C

NEWHALL, C. A. Anatomical findings in congenital anomaly of the heart and great vessels together with discussion of the more interesting features involved. Homo. Hid. 4. M.

NEWTH, D. R. An attempt to determine the origin of the trabeculae cranii and the branchial skeleton of Lampetra planed (Cyclostomata). Ilia. 11. I.

The study of the normal development of the cornea of the eye

in an amphibian. Xenopus laevis. I. 10. J.

NEWTON, B. L. Continued investigation by homologous and heterologous transplantation of embryonic material relating to its development in the anterior chamber in the eye using the method developed by H. S. N. GREENE. Material from human fetuses as well as guinea pigs and mouse embryos will be used. Ilia. 2b**. M.

NICHOLAS, J. S. Studies on the rat egg. Mus notvegicus. Ilia. 2a. M.

The development of rat muscle. Mus norvegicus. Ilia. 12. M.

The development of actomyosin in developing rat muscle. Mus

norvegicus. 111b. 12. c. M.

The interaction of the. roof of the archenteron upon the nervous

system. Amblystoma mexicanum. \\\a. 7. J.

NICOLA, M. de Calcium distribution in early development of sea urchin eggs. Pavacentrotus and Arbacia. Illb. 2c. c. G.

Phosphatase distribution in Crustacean eggs. Cymothoids and

Asellus (Crust, hop.). Illb. 2c. c. D.

NIEUWKOOP, P. D. The influence of Li on the primitive development of the Ascidian egg for analysing the potencies of regulation in this "mosaic" egg. Ascidia malaca. Ilia. lc. H.

The influence of Li on respiration and metabolism of the Ascidian

egg. Ascidia malaca. Illb. 2a. a. H.

The influence of chloramine-compounds on the early development

(neurulation and formation of the central nervous system) of the Amphibian egg. Triturus alpestris and TV. taeniatus. Ilia. 2a. e. J. (in collaboration with F. E. LEHMANN)

Normal development of Xenopus laevis, especially gastrulation and

neurulation (for a normal table of Xenopus laevis). 1.6. J.

(in collaboration with P. F. FLORSCHQTZ)

Analysis of the regulative potencies of the invaginating archenteron

roof and the induced neural plate along the dorso-ventral and cranio-caudal axes in the Amphibian egg by heteroplastic transplantation of parts of the dorsal blastoporal lip. Triturus alpestris, taeniatus and cristatus. (in collaboration with S. TOIVONEN) Ilia. lc. J.



Nieuwkoop 92 Os

Regulation potencies in the neural plate. Formation of neural crest

by regulation after implantation of young neural plate tissue in the ventral side of neurulae, or by homogenetic induction after implantation in middle gastrulae (heteroplastic transplantation). Triturus taeniatus, alpestris and cristatus. Ilia. lc. J.

(in collaboration with Miss M. BOUMAN and B. de PLANQUE)

Analysis of the neural induction. Transfer of inductive substances

in horizontal direction through the presumptive, neural plate, (heteroplastic transplantation of ectoderm). Triturus taeniatus, alpestris and cristatus. Ilia- 7. J.

(in collaboration with Miss A. KREMER and Miss E. BOTERENBROOD)

Analysis of the neural induction. Separation of archenteron roof

and overlying ectoderm by semipermeable membranes. Triturus taeniatus and alpestris. Hlb. 7. d. J.

NIL!, M. C. (data not yet received).

NOEL, Miss E. Effect of metabolic analogs on morphological and biochemical development. Amblystoma punctatum and Rana pipiens. (under direction of E. J. BOELL) Hlb. 2a. e. J.

NOVIKOFF, A. B. Biochemical and cytochemical properties of rapidly growing tissue — normal (i.e., controlled) and autonomous growth (tumors). Rat. Hid. 5. M.

NtlESCH, H. Phanotypische Geschlechtsbestimmung. Planaria (Tur~ bell.) and Lymnaea (Gastr.). IIIc. lb. C. and E.

ODfi, Miss E. Development of aorta, art. pulmonalis and ductus Botalli. Mammals. I. 15. M.

OLIVO, O. M. Electrophysiology of embryonic heart tissue. Gallus gallus. Illb. 15. d. L.

OLSSON, R. Development and anatomy of the nuclei and nerve fibres in the brain. Polypterus (Brachiopterygii). II. 9. I.

OORT, J. Development of the anterior hypophysis of the black-headed gull. Latus ridibundus. I. 18. L.

OPPENHEIMER, J. M. (data not yet received).

ORLANDI, Miss A. Development of nucleoproteins. Aves and Amphibia. Illb. 2c. c. V.

ORLOWSKI, A. The influence of hormones on metamorphosis. Vertebrates(?). V. 2. f. V.(?)

(in collaboration with A. BER)

ORSKA, Miss J. Development of the vertebral column centra in Teleosts. Salmonidae and Cyprinodontidae. II. 11. I.

ORTS — LLORCA, F. Embryology of birds and mammals.

I. 2a. L. and M.

OSTERTAG, Mile Y. La genese de l'asymetrie du tractus genital des oiseaux et la regression des canaux dc Muller. Gallus domesticus.

Ilia. 17. L.

Role des hormones dans la differenciation du sexe par les methodes

d'injections d'hormones, des greffes coelomiques, des castrations embryonnaires, des explantations. Poulet. Illb. 17. f. L.

(en collaboration avec Et. WOLFF, Madame Em. WOLFF et G. STRUDEL)



Ov 93 Perl

OVERGAARD, C. Regeneration. Invertebrates. IV. 2. EV.

PADOA. E. Experimental sex reversal of larval Amphibians.

Illb. 17. J.

Control of metamorphosis. Amphibians. V. 2. J.

PAI, S. (data not yet received).

PANIJEL, J. Histochemistry of nucleic acids in the gametogenesis and development of Parascaris equorum (Nematodes). Illb. 2c. c. C. (in collaboration with J. PASTEELS)

PAO, W. K. (data not yet received).

PAPI, F. Reproduction, Cytology in Rhabdocoela. I. 4. C.

PARMENTER, Ch. L. A continuation of the study of the origin of the diploid and other chromosome numbers in parthenogeneticallv developed frog embryos. Rana pipiens and R. palustris. Ilia. 4. J.

An analysis of the "second factor" in the first cleavage in the

artificial parthenogenesis of the frog egg. Rana pipiens and R. palustris. Illb. 4. J.

PASCHMA, M. Embryology of Enchytraeidae (Oligochaeta) . I. 2a. C. PASQUINI, P. Effects of antimitotics on early development. Rana

esculenta. Illb. 2a. e. J.

(in collaboration with M. A. BARBASETTI)

Effects of antimitotics on the regeneration of peripheral nerves.

Amphibians. IV. 5. J.

(in collaboration with S. LEGHISSA)

PASTEELS, J. J. Centrifugation of amphibian blastula-gastrula. Various sp. of Urodela and Anuva. Ilia. 6. d. J.

General survey of Turtle development. Chrysemis, Pseudemys and

Chelone. II. 2a. K.

Histochemistry of nucleic acids in the gametogenesis and development of Parascaris equorum (Nematodes). Illb. 2c. c. C. (in part in collaboration with J. PANIJEL)

Cytochemical observations on the first stages of Amphibia, various

species. Hlb. 2c. c. J.

(in collaboration with J. BRACHET)*

PATTEN. B. M. (data not yet received).

PEACOCK, A. Development of vertebral column in man. I. 11. M.

PEASE, D. C. (data not yet received).

PEERS, Miss D. J. An investigation into the spawning habits and

earlv development of the common carp, Cyptinus carpio. I. 2a. 1. PEHRSON, G. T. Development and morphology of the laterans system

in the head. Dipnoans and Characinids. II. 8. 1.

PENNERS. A. Regeneration auf verschiedenen Altersstadien von

Tubifex rivulorum (Clitellata) , (Oliqochaeten) . IV. 2. C.

Geschwulstproblem bei Lumbricus (Clitellata), (Oligochaeten) .

Hid. 5. C. PERITZ, Miss K. Ontogenesis of the skull of Hynobius fuscus.

II. 11. J.

PERLMANN, H. P. Serological and chemical studies on the proteins

of developing sea urchin eggs. Paracentrotus lividus and Arbacia

lixula. Illb. 2c. c. G.



Perr 94 PI

PERRI, T. Ricerche sull'indizione di arti soprannumerari mediante trapianti di parti di ibridi o di embrioni irradiati con raggi X. Bufo vulg., B. viridis and Rana esculents. Ilia. 2b. J.

Ricerche su trapianti e espianti tra Anfibi anuri e urodeli alio scopo

di indagare i processi di regolazione, differenziazione nel quadro dei problemi della costituzione biologica. Ilia. lc. J.

(in collaboration with G. COTRONEI)

PERRY, J. H. Differentiation in the nervous system. Amblystoma.

Ilia. 9. J.

Vascular patterns in the developing nervous system. Homo sapiens.

I. 15. M.

PESONEN, S. The magnitudes of the pronuclei of fertilized ova.

Albino mouse. I. 4. M.

The parthenogenetic development of unfertilized ova induced by

chemical stimulation. Albino rat. Ilia. 4. e. M.

The effect of substituted acetic acids on the early ontogenetic

development. Bufo and Rana (Anura) and Triturus (Utodela) .

Ilia. 2a. e. J. PETER, K. Das Leben des Keimlings, Aufsatze uber funktionelle Em bryologie. Vertebraten. Ilia. lc.

PFLEGER, Miss D. Recherches sur les hormones sexuelles embryon naires. Oiseaux. Illb. 17. L.

Role des acides nucleiques dans les phenomenes d'induction. Batra ciens. Ilia. lc. J.

PHILLIPS, R. J. S. Developmental study of a new fifth-toe Polydactyly character in Mus musculus. IIIc. 3. M.

PIATT, J. Transplantation of brachial cord segments in Amblystoma punctatum embryos. With a view to analyzing the factors responsible for normal cord structure and function; i.e. is continuity of neural axis necessary for normal form and function of specific parts? Ilia. 9. J.

Survey of the motor regions of the brain of Amblystoma. With a

view to a morphological and functional separation of each. I. 9. J.

PIEPHO, H. Metamorphose der Insekt en. V. 2. D.

PINCUS, G. (data not yet received).

PIOTROWSKA, J. The influence of the short wave radiation on the fertilization in Amphibia. Illb. 4. d. J

PISANO', A. Development of isolated blastomeres of the Ascidian egg

Ilia. 2b*. H

Parabiosis between pure breed and hybrids Urodela. Triturus sps

IIIc. 2. J PLANQUE, B. de. Regulation potencies in the neural plate. Formation of neural crest by regulation after implantation of young neural plate tissue in the ventral side of neurulae, or by homogenetic induction after implantation in middle gastrulae. (heteroplastic transplantation). Triturus taeniatus, Tr. alpestris and Tr. cristatus.

Ilia. lc. J. (in collaboration with Miss M. BOUMAN and P. D. NIEUWKOOP)

PLETZEN, R. van Ontogenesis of the breast-shoulder apparatus and of the skeletogenous strata. Xenopus laevis. I. 11.}.



Pol 95 Raj

POLEZAJEW, L. W. (data not yet received).

POLICARD, A. (no embryol. work in progress).

POLITZER, G. (data not yet received).

PORTMANN, A. Untersuchungen uber embr. und postembryonale Entw. der Wirbeltiere, vor allem postembryonale Phase. Vor allem Vogel. II. 2a. V.

Untersuchungen uber Larvenentwicklung mariner Gastropoda

(Prosobranchier). II. 2a. E.

POSALAKY, Z. The role of the autonomous nervous system in the regeneration of the lens. Triton. IV. 5. J.

POULSON. D. F. Development of Drosophila using genetic principles and radio-active materials to trace the embryonic components.

Illb. 2c. d. D.

PREDA. V. Action du cholesterol (sous forme de solution 4 ^r en acides biliaires et sous la forme de solution huileuse 4 % de palmitate de cholesterol) sur la regeneration des membres du Triton vulgaire. IV. 4. e. J.

Action de la greffe de cancer sur la regeneration des membres du

Triton vulgaire. IV. 4. J.

L'effet de Taction de certains mineraux (uraninite, tourmaline,

galene, blende, chalcopyrite) sur la regeneration des membres du Triton vulgaire. IV. 4. }.

Production de malformations teratologiques sur l'embryon de

poulet, par Taction de Tadrenaline et de la pilocarpine. Illd. 2. L.

Production de malformations teratologiques sur l'embryon de

poulet, par Taction de Textrait gastrulaire de Rana. Hid. 2. L.

Inductions morphogenetiques chez l'embryon de poulet, a l'aide de

la moelle osseuse de veau. Ilia. lc. L.

- — — L'effet de Taction de Turaninite sur le developpement de l'oeuf de grenouille. Rana esculenta. Ilia. 2a. e. J.

Extirpation de la crete neurale cranienne chez la neurala de Rana

esculenta. Ilia. 9. J.

Action des hormones gonadotropes sur le determinisme du sexe

chez le poulet. Ilia. 17. f. L.

Action des hormones gonadotropes sur le determinisme du sexe

chez la grenouille. Rana esculenta. Ilia. 17. f. J.

Origine des cellules sexuelles second, chez. le poulet. Ilia. 17. L.

PRETO PARVIS, V. Ricerche sullo sviluppo delle ghiandole surrenali

nei mammiferi. I. 18. M.

Ricerche sullo sviluppo dei centri nervosi nell'uomo e nei mammiferi.

1.9. M. PRINS. I. X. Ontogenesis of the musculus orbitoquadratus and ,, trigeminal" musculature. Spheniscus demersus. I. 12. L. PUSEY, H. K. (data not yet received).

RADECKA, E. Mitochondria during the development. Parascaris equorum (Nematoda). I. 2c. C.

RADKOWA, M. Early developmental stages in mammals. I. 2a. M. (in collaboration with Z. SEMBRATOWA)

RAJKOVITS, C. Reinnervation of peripheric nerve stumps after direct implantation into the central nervous system. Albino rat. IV. 5. M.



Ram 96 Reverberi

RAMSEY, E. M. Placentation — Study of vascular pattern of endometrium throuqhout preqnancy. Macaca mulatta (Rhesus monkey).

I.3.M.

RANZI, S. Proteins in embryonic development. Echinodetma and

Amphibia. IHb. 2c. c. G. and J.

RAUNICH, L. Lateral mesoderm explants in tail bud stage. Anura.

Ilia. 2b**. J.

Development of blood and vascular system. Petromyzontidae

(Cyclostomes), Amia and Lepidosteus (Osteoganoids) . Ilia. 15. I.

RAVEN, Chr. P. Nature of polar plasms. Limnaea stagnalis (Gastropoda). Ilia. 4. E.

Chemical embryology. Sabellaria alveolata (Annelida).

Illb. 2c. c. C.

Influence of Li on the development of Limnaea stagnalis (Gastropoda). Hlb. 2a. e. E.

RAWLES, Miss M. E. The role that sex and other hormones play in modifying the expression of pigment cells in color feather formation. Utilizing various techn. such as grafting and in vitro cultures, the various phases of the over-all problem are being investigated. Chick. (in collaboration with B. H. WILLIER) Ilia. 8. f. L.

The nature of the processes involved in formation of pigment of

the hair and skin of mammals. Mouse and rat. Ilia. 8. M.

Developmental origin of the abdominal musculature by means of

carbon reference marks. Chick. Ilia. 12. L.

(in collaboration with W. L. STRAUSS)

RAYNAUD, A. Etude du developpement embryonnaire normal de l'appareil genital de la souris. I. 17. M.

Recherches sur le developpement embryonnaire des glandes pros tatiques des Mulots (Apodemus sylvaticus) de sex femelle.

Illb. 17.M.

Recherches experimentales sur les facteurs du developpement des

differentes parties de l'appareil genital des embryons de souris:

a. Etude de Taction des hormones sexuelles sur le developpement de l'appareil genital des embryons. Illb. 17. f. M.

b. fitude des capacites de developpement des differentes parties de l'appareil genital des embryons, apres destruction des ebauches de l'hypophyse et des glandes genitales. Illb. 17. f. M.

(en collaboration avec M. FRILLEY)

Recherches sur le developpement embryonnaire de la glande mam maire de la souris. Illb. 8. M.

(en collaboration avec M. FRILLEY)

REEVE, E. C. R. Developmental study of lines selected for large and

small body size in Drosophila melanogaster (Insecta). IIIc. 2. D.

(in collaboration with F. W. ROBERTSON) REHM, Miss M. Histogenese inkretorischer Organe von Lepidopteren

bei der Wildform und bei Mutanten. I. 18. D.

REVERBERI, G. The role of induction and morphogenetic movements

in the brain and pigment spots in Ascidians. Ilia. lc. H.

(in collaboration with A. MINGANTI)



Reverberi 97 Ro

The morphogenetic role of the yolk material in Amphibians, studied

by means of heterospecific transplantations. Ilia. lc. J.

REYER R. W. Regeneration problems. Invertebrates and Vertebrates.

IV. l.EV. + V. REYNOLDS, B. D. (data not yet received).

REYNOLDS, S. R. M. Factors in fetal maturity. Homo, Macaca rhesus, Lepus clinic, and Ovis. lib. 2a. M.

Fetal vascular physiology. Homo, Lepus and Ovis. Illb. 15. M.

Uterine contraction patterns in women. Illb. 17. M.

RHODES, S. The lens induction in a number of amphibian species.

Rana clamitans and R. catesbiana. Ilia. 10. J.

(under direction of E. C. HORN) RISLER, H. Kernwachstum in verschiedenen Geweben wahrend der

Metamorphose bei Ephestia kuniella (Ptychopoda setiata) (Lepi dopteten) . V. 1 . D.

RISLEY, P. L. Behavior of nucleic acids in development of telolecithal

ova. (Especially the behavior of the nucleoli and their development).

Lower Vertebrates. Illb. 2c. c. LV.

Histochemical studies of germ cells in relation to physiological

alterations in the life cycle of the organism. Vertebrates.

(in collaboration with A. L. SODERWALL) Nib. 17. c. V.

RIZZOLI, C. Protein metabolism in chicken embryo. Gallus gallus.

Illb. 2c. b. L. ROBERTSON, F. W. Developmental study of lines selected for large

and small body size in Drosophila melanogaster (Insecta).

(in collaboration with E. C. R. REEVE) IHc. 2. D.

ROBERTSON, G. G. The appearance and development of early

ossification centers in the face of human embryos. I. 11. M.

The production of hemopoietic and other anomalies in rat embryos

by nitrogen mustards. Mus norvegicus. Ilia. 2. M.

ROCK, J. A morphologic, descriptive study of human embryos, both

normal and abnormal found in surgically removed uteri, in age

ranging from 1 to 16 days of age.

(in collaboration with A. T. HERTIG) ROETHELI, A. Chemische Beeinflussung der plasmatischen Vorgange

der Meiose bei Tubifex. Illb. 4. e. C.

Physiologie des Knochenfischspermas. Illb. 4. L.

ROOFE, P. G. Development of the central and peripheral nervous

system in relation to behavior patterns along Coghillian lines of investigation. Amblystoma punctatum. Ilia. 9. J.

(in collaboration with G. M. LEE)

ROSE, S. M. (data not yet received).

ROSENBAUM, R. M. Stage series studies and metamorphosis in relation to irradiated embryos. Triturus viridescens viridescens (Salamandtidae). Ilia. 2a. d. J.

ROSIN, S. (data not yet received)

ROSTAND, P. J. (data not yet received).

ROTMANN, E. Regionale Induktion bei Amphibien. Triton. Illb. 7. J.

Regeneration der Extremitat. Triton. IV. 4. J.



R u 98 Schecht

RUDNICK. Miss D. Differentiation of early embryonic tissues in vitro. Gallus. Ilia. 19. L.

RUGH, R. (data not yet received).

RUNNER, M. N. Experimental production of genetic and developmental variations in genetically stable material by treatment of gonads, germ cells and embryos. Mus musculus. IIIc. 2. M.

Studies on the prenatal influences which produce congenital abnormalities in inbred. Mus musculus. Hid. 3. M.

RUNNSTROM, J. A. M. (Cf. work on the Institute). Echinoderms.

Illb. G.

RUSSEL, E. S. Comparison of blood formation in yolk-sac. transfer to liver, formation in liver, and transfer to bone-marrow in normal embryos and those with severe macrocytic anemia due to W,W V genes. Mus musculus. IIIc. 3. M.

Erythrocyte count of normal and abnormal embryos from 12 — 18

days. Abnormal embryos carry dominant genes WW, WW V , W V W. Mus musculus. IIIc. 3. M.

Description of gonad and especially germ-cell differentiation in

normal and abnormal embryos. Embryos which carry WW, W V W, and W V W V genes have abnormal gonads. Mus musculus.

IIIc. 3. M. RUUD, G. (no embryol. work in progress).

SALZGEBER, Mile B. Sterilization et intersexualite chez l'embryon de poulet par irradiation aux rayons X. Ilia. 17. d. L.

SANDISON, Miss E. E. The developmental stages of ova and larvae of barnacles with special reference to the naupliar stages and settlement. Tetraclita serrata, Octomeris angulosa, Chthamalus dentatus, Balanus algicola, B. trigonus, B. maxillaris and B. amphitrite (Cir~ ripedia). I. 2a. D.

SARA', M. Development of the gonads in Psychoda (Diptera).

Illb. 17.D.

SAUNDERS (data not yet received).

SAVAY, Gy. Researches on the time of appearing of lipoids in the embryonic cartilages. Vertebrates. Illb. 1 1 . c. V.

(in collaboration with I. NAGY and L. BEREK)

SAWIN, P. B. Study of intra-uterine influences upon embryonic growth, differentiation, and organogenesis by means of ova and ovary transplants between races known to differ genetically in adult body size as determined by the general size factors and also by genetic factors affecting specific regions of the axial skeleton. Oryctolague cuniculus. IIIc. lb. M.

(in collaboration with F. AVIS and D. DIETZ)

Study of two unrelated genetic types of achondroplasia in the

rabbit, ( 1 ) the type originating at the Rockefeller Institute and (2) a new type discovered in California. Oryctolague cuniculus.

IIIc. 3. M.

SCHECHTMAN, A. M. Plasma protein development in the chick

embryo. (in collaboration with G. W. NACE) Mb. 2c. C. L.

Differentiation of the nucleus during embryological development.

Chicken. (in collaboration with Ch. P. DAGG) IHb. 19. L.



Schen 99 Shapiro

SCHENK, R. Einfluss weiblicher Sexualhormone auf die Histogenese von Triton alpestris. Illb. 19. f. J.

Mikrokephalie durch Defcktoperationen in der Gegend des Ur mundgriibchens von jungen Tritongastrulae. Triton alpestris.

Ilia. 7. J. SCHJEIDE. O. A. Development of blood cells of the chick embryo.

Illb. 15. L.

SCHMIDT, G. A. (data not yet received).

SCHMIRLER, H. Regenerationsversuche an verschieden alten Tubifex

rivulorum (Annelida) . IV. 2. C.

SCHOTTfi, O. E. (data not yet received).

SCHREIBER, B. Bone regeneration. Amphibians. IV. 5. J.

SCHUfi, Mile M. Origine des cellules de regeneration chez les Ba f.raciens. Triton. Potentialites de ces cellules. IV. 2. J.

SCHWINCK, Frl. E. Metamorphoseveranderungen der Epidermis und

inkretorischer Organe bei Panorpa (Insecta). V. 4. D.

SEDRA. S. N. Metamorphosis of the jaws and their muscles correlated

with the chanqes in the animal's feeding habits. Bufo regularis.

V.4.J. SEMBRAT, K. Experimental analysis of the early developmental stages

of the Sea Anemones. Sagartia leucolena (Anthozoa). Ilia. 2a. B.

Localization of the primary gonocytes in the early gastrula of

Amphibians. Hla. 17- J.

The morphogenetical functions of the thyroid gland in poikilo thermic Vertebrates. Pisces, Amphibia and Reptilia. Ilia. 18. V.

Early developmental stages in the rat, Epimys norvegicus.

I. 2a. M.

SEMBRATOWA, Z. Heteroplastic transplantation of the hind part

of neural plate. Ambly stoma punctatum and A. tigrinum (Urodeles) .

Ilia. 2b. J.

Analysis of the hind part of the neural plate in Anura. Rana pa lustris and R. silvatica. Hla. 2b. J.

Early developmental stages in mammals. I. 2a. M.

(in collaboration with M. RADKOWA)

SENSENIG, E. C. Development of meninges of spinal cord. Homo

I 9 M sapiens. *• y - iV1 Development of postotic axial anomalies. Homo sapiens. Hid. 3. M.

SHANER, R. F. A study of abnormal hearts in pig embryos corresponding to the third month of human development. Hid. 4. M.

SHAPIRO, H. Metabolic changes on fertilization. Arbacia punctulata. Asterias forbesii and Chaetopterus pergamentaceus. Illb. 4. EV.

Quantitative investigations of the rate of cell division in marine

eggs, in relation to cellular metabolism, and ionic environment. Arbacia punctulata, Asterias forbesii and Chaetopterus pergamentaceus. IHb. 19.b.EV.

Water permeability of marine eggs. Arbacia punctulata. Asterias

forbesii and Chaetopterus pergamentaceus. Illb. 2a. b. EV.

Waterpermeability of mammalian eggs. Lepus cuniculus.

Illb. 2a. b. M.



Shapiro 100 SI

Oxidative metabolism of mammalian eggs. Lepus cuniculus.

Illb. 2a. a. M.

Mammalian parthenogenesis. Lepus cuniculus. Illb. 4 M.



SHAVER, J. R. Initiation of artificial parthenogenesis in frog eggs. Rana fusca (Anura). Illb. 4. J.

Immunological characteristics of embryonic cytoplasmic granules.

Rana fusca (Anura). Illb. 2c. h. J.

Biochemistry of development of frog embryos. Rana fusca (Anura).

Illb. 2c. c. J. SHELLHAMER, R. H. Histochemistry in the development of Cyclo stomes. Illb. 2c. c. I.

SHEN, S. C. Development of cholinesterase in the amphibian nervous

system in relation to the functional maturation of various regions.

Amblystoma punctaturn. Illb. 9. c. J.

(in collaboration with E. J. BOELL)

Cholinesterase in brain hyperplasia and hypoplasia following eye

transplantation and extirpation. Amblystoma punctaturn and Ambl. tigrinum. Illb. 9. c. J.

(in collaboration with E. J. BOELL)

SIEKERT, R. G. (Physiology of the fetus). Sex difference in human coronary arteries. Homo sapiens. Illb. 15. M.

SILBERBAUER, Mrs B. I. Structure and development of Cape Crawfish, Jasus lalandii (Decapoda) . Ilia. 2a. D.

SINCLAIR, J. G. Preparation of models and description of early human embryos. (15 day, 17 day, 26 day, 3,5 mm. and 6 mm.).

I. 2a. M.

Studies of placenta related to twinning and to conditions of birth.

(Three papers published). Homo. I. 3. M.

Correlated fetal and maternal blood studies at time of birth. (The

data have been collected on cell types and distribution. Data on placental structure are known. Statistical analysis is yet to be done). Homo. I. 15. M.

Experimental studies of carcinogenic agents passing the placenta

in mice. (Preliminary paper published). Morphological effects both immediate and remote. Metabolism of the compounds to determine the mechanisms. Hid. 5. M.

SINGER, J. An investigation of the organising action of the oral cone in the regeneration of the hydroid Cordylophora lacustris. IV. 2. B.

SINGER, M. Influence of nerves on regeneration of urodele limb. Triturus viridescens. IV. 4. J.

Histology of limb and nerve regeneration in urodele. Triturus

viridescens. IV. 4. J.

SINHA, T. P. (Physiology of the fetus). Study of changes in pulmonary blood volume and changes in the liver at birth and in the early postnatal period in guinea pigs. Illb. 13 and 14. M.

SIPPEL, T. Morphological, physiological and biochemical differentiation of the amphibian heart. Amblystoma punctaturn and Rana pipiens. (under direction of E. J. BOELL) Mb. 15. J.

SLOTWInSKI, J. Cytologie du developpement de la membrane olfactive. Mammiferes. II. 10. M.



Sm 101 Stephan

SMRECZYNSKI, S. Determination of early developmental stages in Insects Agelastica alni (Coleoptera) . IIIc. lc. D.

SNELLEN, H. A. Investigations on congenital heart-malformations. Homo. Hid. 4. M.

(in collaboration with J. DANKMEYER and W. H. v. d. WEL)

SNYDER, F. F. Respiratory physiology of fetus and newborn. Rabbit and human. Hlb. 2a. a. M.

SOBELS, F. H. Developmental physiology and genetics of a lethal mutant character in Drosophila melanogaster (lethal-translucida).

IIIc. 3. D.

SODERWALL, A. L. Histochemical studies of germ cells in relation to physiological alterations in the life cycle of the organism. Vertebrates. Illb. 17.C.V. (in collaboration with P. L. RISLEY)

SOLEWSKI, W. The development of the gill vessels in the frour.

I. 15.1.

SPEIDEL, C. C. (data not yet received).

SPIEGELMAN, S. (data not yet received).

SPIKES, J. D. (data not yet received).

SPIRITO, A. (data not yet received).

SPRATT Jr, N. T. Investigating the nutrient requirements essential to morphogenesis and growth of organisms in the early stages of chick development (pre-streak and streak blastoderms).

Illb. 2a. g. L.

STARCK, D. Placentation of Macroscelides (Insectivora). II. 3. M.

Chondrocranium and Osteocranium of Scotophilus temmincki (Mi crochiroptera) . H. 11. M.

STEFANELLI, A. Determination and differentiation of nervous cells. Reptiles, Pisces and Amphibians. Ilia. 9. V.

Regenerations of nervous tissue. Reptiles and Amphibians. IV. 5. V.

Embryo metabolism, respiration. Pisces and Amphibians.

Illb. 2a. a. LV.

Nucleic acid synthesis in development. Fishes. Illb. 2c. c. I.

STEINER, H. Development of the tetrapod-limb with special reference

to Mammals, (embryological evidence of their aboreal origin). Amphibia, Reptilia, Aves and Mammalia. II. 2b. V.

New embryological evidence of the "biogenetic law" in connection

with the phenomenon of iteration and convergence, rudimentation and adaptation. Vertebrates. II. la. V.

Embryological analysis of feather-growth. The problems of the

"afterschaft" and of "diastataxy". Ratites and Carinatae. Ilia. 8. L.

Colour and pigment-differentiation in the bird's feather. Melopsit tacus undulatus. I- 8. L.

STELT, v. d. Investigation of the development of the artery-arches in turtle embryos. *• 15. K.

STEPHAN, F. Le developpement du systeme vasculaire (coeur et systeme vasculaire embryonnaire et extra-embryonnaire). Gallus domesticus. Ilia. 15. L.

Les anomalies du systeme vasculaire (coeur et systeme vasculaire

embryonnaire et extra-embryonnaire). Gallus domesticus. Hid. 4. L.



Stephens 102 Sw

STEPHENSON, N. G. Development of Leiopelma archeyi and Ascaphus truei. II- 2a. J.

STEVENS, L. C. Developmental potencies of the neural crest in Anurae. Xenopus laevis. Ilia. 7. J.

STICH, H. Plasmatische Verhaltnisse — Ectosomenphanomen. Cyclops (Entomosttaka). 111b. 2c. D.

Karyologische Untersuchungen — Karyomerentropismus. Cyclops

(Entomosttaka). Hlb. 19. D.

STIEVE, H. (data not yet received).

STOIGER, H. Nahreidetermination bei stenoglossen ProsobtanchicrArten. Hie. lb. E.

Cytologic und Cytogenetik der Prosobtanchiet. IIIc. 2. E.

STOLL, R. Teratologic Rana fusca et Gallus. Hid. 2. J. and L.

STONE, L. S. Complete analysis of the ocular mechanisms in Am blystoma studying the regeneration of the lens and regulation of

the nervous mechanisms after ocular transposition. IV. 5. J.

STRAUSS, F. Early development and implantation of mammals. Ho minidae (Insectivota) . II. 3. M.

- Place of fertilization of the mammalian egg. Rodentia and Catnivora. IHb. 4. M. (under direction of H. W. MOSSMANN)

STRAUSS Jr, W. L. Developmental origin of the abdominal musculature by means of carbon reference marks. Chick. Ilia. 12. L. (in collaboration with Miss M. E. RAWLES)

STRAWlNSKI, S. Development of the blood vessels in the frog. Rana

esculenta (Salientia) . I. 15. J.

STRUDEL, G. Etude de la polyembryonie chez les Poissons. Ttuite.

Ilia. Id.

Correlations nerveuses chez l'embryon de poulet, Gallus domesticus.

Ilia. 9. L.

Role des hormones dans la differentiation du sexe par les methodes

d'injections d'hormones, des greffes coelomiques, des castrations embryonnaires, des explantations. Poulet. Illb. 17. f. L.

(en collaboration avec Et. WOLFF, Madame Em. WOLFF

et Mile Y. OSTERTAG)

STULTZ, W. A. Inter-relationships between the development of limbs and the central and peripheral nervous systems. Ambly stoma punctatum. Ilia. 2b. J.

Symmetry relations in developing limbs. Amblystoma punctatum.

STUMP, W. (data not yet received).

SUOMALAINEN, H. Thyroid gland in delayed metamorphosis of

Xenopus larvae. V. 2. J.

(in collaboration with S. TOIVONEN) SVETLOV, P. (data not yet received).

SWEDMARK, B. G. Sulphate metabolism in sea urchin development.

IHb. 2c. b. G. SWIERZAWSKA, K. Physico-chemical properties of embryos: the

yolk. Salmo (Pisces), Lacetta (Reptilia) and Gallus (Aves).

IHb. 2c. c. V.

(in collaboration with Z. GRODZINSKI and H. DATKOWNA)



Sz 103 Toro

SZARSKI, K. W. Development of the kidneys in Anamnia. Amphibia anura and Teleostei. I. 17. LV.

SZENTAGOTHAI. J. Regenerative capacity of the central nervous system. Replacement of central pathways by degenerated peripheric nerves. Albino rat. IV. 5. M.

Regenerative capacity of peripheric ganglion grafts. Reinnervation

of degenerated motor end-plates by processes of grafted peripheric ganglion cells. Albino rat. IV. 5. M.

SZENTPETERY, J. C. Growth and development of intramural autonomic nerve plexus of the stomach and small intestine by the silver impreqnation methods and experimental nerve cuts. Albino rat. I-9.M.

TAMINI, Miss E. P. (no embryol. work in progress). TAYLOR, A. C. (data not yet received).

TEYSSEYRE, Mile J. Developpement du diencephale. Rat. I. 9. M. (en collaboration avec A. GIROUD et P. DESCLAUX)

Modifications du developpement de l'encephale sous Taction des

antithyroidiens. Rat. Hid. 4. M.

THEILER, K. Ueber die Entstehung von Blockwirbeln beim Menschen.

nid. 4. m.

Ueber die Entwicklung von Missbildungen der Wirbelsaule.

Mensch und Triton. Hid. 4. M. and J.

THERMES, G. Reqenerative processes of the spinal medulla. Reptiles.

IV. 5. K. THOMSON FLYNN, T. (data not yet received). TOIVONEN, S. The specific action of heterogenous inductors. Triton.

Illb. 7. J.

Analysis of the regulative potencies of the invaginating archen teron-roof and of the induced neural plate along the dorsoventral and cranio-caudal axes by heteroplastic transplantation of parts of the dorsal blastoporal lip. Ttitutus alpestris, taeniatus and cristatus. Ma. lc. J.

(in collaboration with P. D. NIEUWKOOP)

Thyroid gland in delayed metamorphosis of Xenopus larvae.

(in collaboration with H. SUOMALAINEN) V. 2. J.

TONDURY, G. Systematische Untersuchungen typischer menschlicher Missbildungen unter Bezugnahme auf die Ergebnisse entwicklungsphysiologischer Forschung. Gegenwartig werden Kopfmissbildungen und sireniforme Missbildungen analysiert. Hid. 3. M.

Untersuchungen iiber die Entwicklung des menschlichen Gesichts

und ihre Beziehungen zur Entstehung der Hasenscharte und anderer Spaltbildungen. Md. 3. M.

Untersuchungen zur Frage der Gonadenentwicklung beim Menschen und der Potenzen des Ovarepithels beim Erwachsenen.

Ilia. 17. M.

TORO. I. Bioloqy of the reticuloendothelial system. Mammals.

Illb. 16. M.

Splenectomy and the embryonic life. Albino rat. Hid. 2. M.


Thymectomy and the calcium content of the bird's egg. Illb. 2c. f. L. Influence of yolk on the germlayers. Birds. Illb. lc. L.



TOWNES, Ph. L. Selective cellular adhesion in embryonic germ layers. Urodeles and Anurans. Illb. lc. J.

TRACY, H. C. The development of all systems of the toadfish in relationship to behavior. Ilia. 2a. I.

(in collaboration with J. WINBLAD and Th. BATTY)

TRAMPUSCH, H. A. L. Experiments on the head-organizer by means of X-rays and a new micro-surgical device. Amphibians.

Ilia. 7. d. J.

Experiments on secondary inductors, mainly on sense organs. Amphibians. Ilia. 10. J.

Experiments on the gradient-concept. Hydroidea. IV. 1. B.

TRIBE, Miss M. Development of the trabeculae and parachordals in

the Lamprey. (in collaboration with A. FISK) I. 11. 1.

TRINKAUS, J. P. Mechanism of gastrulation in teleost eggs. The nature of the surface gel layer of the egg and its possible role in the cell movements (particularly epiboly) characteristic of teleost gastrulation. Extensive utilization of the methods of marking, wounding, transplantation. Fundulus heteroclitus (Osteichthyes).

Ilia. 6. I.

Role of hormones in differentiation of pigment patterns. Investigation of estrogen and thyroid hormone as morphogenetic agents in pigment pattern differentiation. The particular emphasis has been on the response of melanoblasts to these hormones and the role of epidermis in conditioning this response. Gallus domesticus.

Illb. 8. f. L.

TROMBETTA, P. Serology of embryo. Birds. Illb. 15. L.

TRUSLOVE, G. M. The study of the normal development of the lateral lines in an amphibian with observations on their regenerative capacity. Xenopus laevis (Anura). I. 8. }.

TSCHUMI, P. Chemische Beeinflussung der Extremitatenbildung von Xenopus. Ilia. 2b. e. }.

TSENG, Miss M. P. Localization of the factors which cause situs inversus in tadpoles by defect and inversion experiments. (Removal and inversion of different parts of neural plate and chorda-mesoderm, or chorda-mesoderm, or lateral plate). Rana nigtomaculata.

Ilia. 13. J.

Intestinal canal can only be formed in the whole embryo; in the

extirpated entoderm no canal formation ever occurs. By combination of entoderm fragments with different parts of mesoderm in explants the formation of the intestinal canal may be studied. Rana nigro* maculata. Ilia. 13. J.

Determination of; how entoderm regulates its lost parts; when entoderm loses its power of regulation; and whether the regulation power is lost gradually or suddenly at a certain stage. Moreover the question: whether the entoderm at the neural plate stage still retains its power of regulation when different portions of entoderm are removed. Afterwards earlier stages will be examined in similar way. Rana nigtomaculata. Ilia. lc. J.



Tu 105 Vandebrock

TUCKER. G. H. (data not yet received).

TUNG, T. C. (data not yet received).

TWITTY. V. C. (data not yet received).

TYLER. A. (data not yet received).

TYLER, D. B. Factors responsible for the changes in brain metabolism

during its development. Rat and guinea pig. Illb. 9. b. M.

UBISCH, L. v. Entwicklungsprobleme (Buch, c. 250 S.). Evertebraten

und Vertebraten. Illb. la. EV. + V.

Entwicklungsphysiologie (Buch, c. 100 S.). Evertebraten und Vertebraten. Nib. la. EV. + V.

Entwicklungsgeschichte der Seeigel (Monogr. 100 S.). Ilia. 2a. G.

Biologische Svnthesen (Im Druck). Evertebraten und Vevtebvaten.

Ilia. la. EV.-fV. UMANSKI, E. (data not yet received). URBANI, E. Ricerche sulla respirazione embrionale dei Teleostei.

Illb. 2a. a. I.

Ricerche sul comportamento degli acidi nucleici durante l'oogenesi.

Amphibians. Illb. 4. c. J.

Azione degli antimitotici sul metabolismo respiratoria degli Anfibi.

Illb. 2a. a. J.

Ricerche sulla determinazioni embrionali precoci nella Ascidie.

(in collaboration with Mrs L. URBANI— MISTRUZZI) Ma. lc. H.

URBANI — MISTRUZZI, Mrs L. Ricerche sulla determinazioni embrionali precoci nella Ascidie. Ilia. lc. H. (in collaboration with E. URBANI)

Ricerche su parabiosi tra Anfibi Anuri e Urodeli alio scopo di

indagare i processi di regolazione, differenziazione nel quadro dei problemi della costituzione biologica. Ilia. lc. J.

(in collaboration with G. COTRONEI)

Azione dei raggi X sugli embrioni di Anfibi, studiata con il metodo

della parabiosi. Illb. 2a. d. J.

Ricerche sull'acido ascorbico durante lo sviloppo embrionale degli

Anfibi. Illb. 2c. c. J.

Ricerche sulla catalasi durante la metamorfosi. Anfibi. V. 2. J.

VACEK, Z. Origin and development of the oesophageal epithelium in Batrachians. Ilia. 13. J.

VACHON, M. Embryologie et developpement postembryonnaire. Arachnides et Myriapodes. I. 2a. D.

Embryologie et developpement postembryonnaire. Arachnides et

Myriapodes. IV. 2. D.

VANDEBROEK, G. Morphogenetic movements during the gastrulation of Ascidia aspersa and Styela partita (Ascidians). Ilia. 6. H.

The mechanics of gastrulation in Ascidie aspersa and Styela partita

(Ascidians). Ilia. 6. H.

Protoplasmic movements after fertilization of Ascidia aspersa.

Ilia. 4. H.

The organization of Ascidian embryos studied by the influence of

centrifugation; a. action on isolated parts; b. local action of centrifugation. (recombination after centrifugation). Ilia. 2b*. d. H.

Induction and competence phenomena during the development of

Ascidia aspersa. Ilia. lc. H.

Action of LiCl and NaSCN on the development of Ascidia aspersa

and Styela partita (Ascidians) . Ilia. 2a. e. H.

Development of the neural system of Balanoglossus kowalewskii

(Enteropneusta) . I. 9. F. (in collaboration with J. JANSSENS)

Morphogenetic movements during gastrulation of Coelenterata,

Enteropneusta and lower Chordates. II. 2a. EV. -f- LV.

The general comparative, descriptive and experimental embryology

of the Metazoa and their classification. The place of the Cycloneuria (Echinoderma, Enteropneusta, Pterobranchia and Chaetognatha) in the animal Kingdom. II. 2a. EV. -j- V.

Nucleids acids during the organogenesis of Eisenia foetida (Annelida). Hlb. 2c. c. C.

Comparative organogenesis in Protostomes and Chordates.

II. 2a. EV. + V.

The development of the trabeculae cranii in perch embryos from

which the prosencephalon has been removed. Perca (Osteichthyes) .

Ilia. 11. I.

The development of the trabeculae cranii in perch embryos treated

with LiCl. Perca (Osteichthyes). Ilia. 11. 1,

(in collaboration with M. T. CLAES)

Modifications of the competence in Triturus taeniatus (Urodeles)

after local action of LiCl. Ilia. 7. J.

(in collaboration with E. BONfi)

Morphogenetic movements in the primitive streak of rat embryos.

Ilia. 6. M. VANDEL, A. (data not yet received).

VANNINI, E. Embryogenesis and differentiation of the gonads in Vertebrates. Amphibia and Amniota. Illb. 17. f. V.

Regeneration in Polychaeta. IV. 2. C.

VASSEUR, E. J. E. Studies on the chemical composition and the

species specificity of its chemical composition. Action of dissolved jelly coat substance (fertilizin) on the spermatozoa. Paracentrotus lividus, Psammechinus miliaris and other sea urchins. Illb. 4. G.

VERMAAK, D. Ontogenesis of commissural connexions of the vena pudenda externa and v. p. interna in an advanced human embryo.

I. 15. M.

VILLAFRANCA, G. de Studies of various protein fractions in developing muscle in relation to changes in physical properties and the development of contractility. Mus norvegicus albinus. Illb. 12. c. M. (under direction of E. ]. BOELL)

VINTEMBERGER, P. Recherches sur le determinisme de la symetrie bilaterale chez les Vertebres. Amphibiens. Ilia. lc. }.

VITAGLIANO, G. Ribonucleic acid suply to germ cells and determinism of meiosis. Asellus (Crust. Isop.) . Illb. 4. D.

VOGT. Frl. M. Development of semilethals in Drosophila melanog aster .

IIIc. 3. D.



Wa 107 Whita

WADDINGTON, C. H. Regional specificity in living and dead organizers. Triton alpestris. II lb. 7. J.

Cinematographic study of morphogenetic movements. Amphibians

and Birds. L 2a. d. J. and L.

Transplantation of cell constituents. Triton alpestris. II lb. 2c. J.

Developmental efforts of some genes in Drosophila melanogaster

(Insecta). IIIc. 3. D.

WANG. Y. T. Mit Hilfe der Exstirpation des Entoderms im Neurulastadium und der Defektsetzung in der Seitenplatte einer Spatgastrula und Fruhneurula soil die Entstehung der Geschlechtszellen studiert werden. Rana nigromaculata. Ilia. 17. J.

Der Zeitpunkt der Determination und der Auswanderung der Geschlechtszellen werden mit der Wiederholung der oben genanntcn Versuchen in verschiedenen Entwicklungsstadien zum fc^tstellen versucht. Rana nigromaculata. Ilia. 17.

WARD, Miss M. Development and reproduction in the hamster.

I. 2a. M.

WEBER, A. Developpement des synapses dans les centres nerveux. Leur degenerescence et leur regeneration. Mammiferes (?).

IV. 5. M. (?)

WEDIN, B. Treatise on the head coeloms during the development of lower vertebrates. (Thesis). II. 16. LV.

Wr^GLARSKA, B. Early developmental stages of Insects. Agelastica alni (Coleoptera) . I. 2a. D.

WEISS, P. (data not yet received).

WEISSENBERG, J. R. (data not yet received).

WEISZ. P. B. Differentiation of cilia in Protozoa, Ciliata.; regeneration. IV. 2.

The role of the macronuclei. Ciliata. IIIc. lb.

WEL, W. H. v. d. Investigations on congenital heart-malformations.

Homo. Hid. 4. M.

(in collaboration with J. DANKMEYER and H. A. SNELLEN) WELLS, L. }. Development of the pleural sacs and diaphragm. Homo sapiens. I. 16. M.

Development of the broncho-pulmonary segments. Homo sapiens.

(in collaboration with E. A. BOYDEN) I. 14. M.

Functioning of the glands of internal secretion in the fetus (hypophysis, gonads, adrenals, thyroid). Rattus norvegicus albinus.

Illb. 18. M.

Capacity of the fetus to digest food experimentally introduced

into the fetal stomach. Rattus norvegicus albinus. Illb. 13. g. M. (in collaboration with J. F. HARTMANN)

WENGER, E. L. Radio-active tracer study of amphibian eggs, with special reference to organizer action. Illb. 7. d. J.

(in collaboration with F. MOOG)

Analysis of interrelations between parts of the embryonic spinal

cord by means of defect experiments. Gallus domesticus. Ilia. 9. L.

WESTHUIZEN, C. M. v. d. Ontogenesis of the skull of Heleophayne purcelli. I- 1 1 • J WHITAKER. D. (data not yet received).



White 108 Windle

WHITELEY, A. H. Study of the importance of the phosphorylated compounds in the energetic changes accompanying activation of the eggs. Strongylocentrotus purpuratus and Dendraster excentricus. * IIIb.4. b. G.

WICKLUND, Miss E. On fertilizability of the egg under different conditions acting on sperm and eggs. Psammechinus miliaris, Strongylocentrotus droebackiensis and Arbacia lixula. Illb. 4. G.

WILENS, S. Vital staining of mesoderm and entoderm under the hindbrain and ear. Ambly stoma punctatum. Ilia. 2b**. J.

WILLIAMS, R. G. Studies on growth of various implanted tissues with the rabbit's ear chamber technique. Ilia. 19. M.

(in collaboration with E. R. CLARK)

WILLIAMS, S. C. Tissue culture of young isolated neuroblasts from special areas of brain, esp. cerebellum, trigeminal. Chick and Man. (in collaboration with Miss M. J. HOGUE) Ula. 9. L. and M.

Early development of human teeth. I. 8. M.

WILLIAMS, T. W. Study of the ear by modern methods involving

use of plastics and photographic procedure. Man. I. 10. M.

Study of the capillary bed in various organs, making use of special

technique to visualize the capillaires. Illustrated by sterioscopic photography. Various small mammals. I. 15. M.

WILLIER, B. H. The mechanisms whereby feather color patterns are produced.

a) Interaction of pigment cells of known genotype with feather germ ("the builder" of the structural parts of the feather);

b) Factors regulating migration of pigment cells and their growth (multiplication) and differentiation (synthesis of specific melanin granules);

c) The role that sex and other hormones play in modifying the expression of pigment cells in color feather formation.

(Utilizing various techniques such as grafting and in vitro cultures) Gallus domesticus (various breds and varieties). Ilia. 8. f. L.

(in collaboration with Miss M. E. RAWLES and students)

WILSON, J. W. A study of mitotic activity and other cytological

phenomena in liver regeneration. Vertebrates. IV. 5. V.

WINBLAD, J. Development of all systems of the toadfish in relation

to behavior. Ilia. 2a. I.

(in collaboration with H. C. TRACY and Th. BATTY) WINDLE, W. F. Development of fiber tracts in brain of human

embryos of 4th to 7th week. I. 9. M.

Development of chromophil substance in central nervous system

neurons. Guinea pig and man. I. 9. M.

(in collaboration with A. LAVELLE)

Regeneration in mammalian central nervous system. (Recovery

of neurons following trauma, alterations in their internal environment). Cat and dog. IV. 5. M. (in collaboration with J. C. LIU and other coworkers)

Changes in pulmonary blood volume at birth and in early postnatal

life. Guinea pig. Illb. 14. M.



Windle 109 Va

Structure of the coronary arteries at buth. Man. Ilia. 15. M.



WINIWARTER, H. de (data not yet received).

WINOWSKA, Mrs K. W. Development of the air-bladder in Teleost Fishes. Xiphophorus. "• 14- *•

WISKONT, H. Regeneration in Amphibians. The influence of inanition on that phenomenon. IV. 2. J. (in collaboration with S. HILLER and T. KROTKIEWICZ)

WISLOCKI, G. B. The cytology and histochemistry of the uterus and placenta. Mammals. II. 17. c. M.

WITSCHI, E. Experimental sex determination by steroid hormones, and by overripeness of the egg. Anurans. IHb. 17. f. J.

Neoplastic development of overripe frog eggs. Hid. 2. J.

Metamorphosis of the amphibian ear. V. 4. J.

Nutritional conditions in the incubating bird's egg. IHb. 2a. g. L.

WITTEK, Miss M. Oogenesis and vitellogenesis of various Amphibians. 1. 4. J. (under direction of J. PASTEELS)

Oogenesis of Reptiles. Lacetta vivipara. I- 4. K.

(under direction of J. PASTEELS)

WOERDEMAN, M. W. Lensregeneration. Birds and Mammals.

IV. 5. HV.

Induction in tissue cultures and potencies of cells in tissue culture.

Birds and Mammals. IHa. lc. HV.

WOLFF, Et. Production exp. de monstres simples chez les oiseaux.

Ilia. lc.L.

Organogenese de la face et du systeme nerveux. Gallus domesticus.

(en collaboration avec W. HUBER) IIIa - 2b - L Role des hormones dans la differenciation du sexe par les methodes

d'injections d'hormones, des greffes coelomiques, des castrations embryonnaires, des explantations. Poulet. Illb. 17. L.

(en collaboration avec Madame Em. WOLFF, Mile Y. OSTERTAG

et G. STRUDEL)

WOLFF, Madame Em. Role des hormones dans la differenciation du sexe par les methodes d'injections d'hormones, des greffes coelomiques, des castrations embryonnaires, des explantations. Poulet.

Illb. 17. L. (en collaboration avec Et. WOLFF, Mile Y. OSTERTAG et G. STRUDEL)

WOODGER, J. H. General embryological methodology. Invertebrates and Vertebrates. IHa. lb. EV. and V.

WORONZOWA, M. A. (data not yet received).

WSZELACZYNSKA, M. Developmental physiology of the pronephros in Amphibians. IIIb - 17 - J YAO, T. The distribution and relation to development of ribose-nucleic acid, desoxyribose nucleic acid, — SH groups, alkaline and acid phosphatase in preimaginal Drosophila melanogaster (Insecta).

I. 2c. c. D.



Yc no Zw

YCAS. M. (data not yet received).

YNTEMA, C. L. Induction and differentiation of ear ectoderm. Amblystoma punctatum. Ilia. 10. J.

Regeneration of aneural limbs. Amblystoma punctatum. IV. 4. J.

Development of autonomic nervous system. Gallus domesticus.

Ilia. 9. L.

Effects of sulfa drugs on mammalian embryo. Mus musculus.

Hid. 2. M.

ZAAIJER, Miss J. J. P. Factors governing dentin formation. Mus musculus. Illb. 8. M.

Role of the odontoblasts in the formation of secondary dentin.

Mus mu.sculus. Ilia. 8. M.

ZAKARIAS, Z. Changes in the proctal epithelium in its embryonic and postfetal development, in grown up individuals of different ages, and under pathological circumstances, with special regard to its microtopografic situation. Adequate experiments on animals. Man and dog. Ilia. 13. M.

fin collaboration with S. KPOMPhCHbR)

ZEUTHEN, E. Study with Cartesian divers of mitotic rhythm in metabolism during cleavage period. Echinoderms and Amphibia.

Illb. 19. b. G.andL.

ZHINKIN, L. (data not yet received).

ZWEIBAUM, }. (no embryol. work in progress).

ZWILLING, E. The role of epithelial components in the developmental origin of the "wingless" syndrome of chick embryos. Gallus domesticus. IIIc. 3. L.

The effect of nicotinamide and a-ketoglutaric acid on insulininduced hypoglycemia in chick embryos; relation to micromelia. (}allw. domesticus. Illb. 2a. e. L.

Hypoglycemia following injection of insulin into chick embryos

of 30 hours of incubation; relation to rumplessness. Gallus domestic ir. IIIc. 2. L.

Sulfanilamide and its micromelia-inducing effects in chick embryos;

enhancement of the effects by para-aminobenzoic acid and antagonism of nicotinamide. Gallus domesticus. IIIc. 2. L.



==General List of Subjects==

With Names of Investigators

(arranged according to organ *y»trms ami ivilrnulli group*)


Classification Into Subjects

General groups. 

I. Descriptive embryology. 

II. Comparative embryology.

III. Experimental embryology.

a. Developmental morpholep

b. Developmental physiology.

c. Development and genetics.

d. Development and pathology.

IV. Regeneration. 

V. Metamorphosis.


Subdivision of groups I. II. IIIa and IIIb into general subjects. 

1. a. Theoretical problems.

b. Technics.

c. General questions (induction, determination, regulation, organization, symmetry and asymmetry, gradients },

2. Complete development or development during special periods

a. of whole organism.

b. of part of the organism (e.g. head, tail, limbs, etc.). b*. of isolated blastomeres,

b**. of organ-rudiments. b***.of special tissues.

c. of cell-COnstituentS and special substances Early development.

3. Implantation, placentation and development of fetal membranes.

4. Ovogenesis, spermatogenesis, structure of egg and sperm, maturation, oviposition. fertilization (activation, parthenogenesis).

5. Cleavage.

6. Gastrulation.

7. Neurulation (including development of neural crest).

Development of organ-systems.

8. Skin, dermal formations (cxo-skeleton. teeth, feathers), sense Organs and glands of skin (including mammae) and pigment patterns.

9. Nervous system, ganglia, nerves and enveloping membranes.

10. Special sense-organs (nasal organ, eve and ear).

11. Embryonic temporary endo-skeleton, skeleton, skull and joints.

12. Muscular system.

13. Alimentary tract.

14. Respiratory-organs (including swim bladder).

15. Heart, vascular system and blood.

16. Coclomic cavity, endothclia. lymphatic system and connective tissue

17. Urogenital system (development and structure), sex detei -initiation.

18. Endocrine glands (development, structure and functioning). \V. Growth and differentiation (including mitosis).


subdivision of IIIa and IIIb.

a. Respiration.

b. Metabolism and osmotic properties.

c. Cytochemistry (enzymes, carbohydrates, proteins, lipoids, etc.).

d. Physical treatment and physical methods.

e. Chemical treatment.

f. Influence of hormones and vitamins.

g. Nutrition of embryo, h. Immunological studies.

Subdivision of group IIIc.

1. a. Theoretical problems, b. General questions.

2. General genetical studies (heteroploidy, hybridization, chimaeras, etc.).

3. Analysis of influence of special genes and mutants in development (including lethal factors).

Subdivision of group IIId.

1. Theoretical problems and general questions.

2. General investigations on pathological development.

3. Development of special malformations.

4. Pathological development of special organs.

5. Tumours.

Subdivision of group IV.

1. Theoretical problems and general questions.

2. General investigations on regeneration, including total regeneration

(3).

4. Partial regeneration (tail, limbs, etc.).

5. Regeneration of special organs (lens, etc.).

Subdivision of group V.

1. Theoretical problems and general questions.

2. General investigations on metamorphosis.

3. Investigations of whole process of metamorphosis.

4. Metamorphosis of special organs.

Systematical subdivision.

EV. Evertebrata.

A. Porifera.

B. Coelenterata.

C. Vermes and Onychophora, Tardigrada and Linguatulida.

D. Arthropoda.

E. Mollusca.

F. Bryozoa, Entoprocta, Brachiopoda and Hemichordata.

G. Echinodermata. H. Acrania.

V. Vertebrata. HV. Higher Vertebrates.

LV. Lower Vertebrates. K. Reptilia.

I. Pisces. L. Aves.

J. Amphibia. M. Mammalia.



1.1. 113 1. 2a.

I. Descriptive embryology.

la. Theoretical problems.

lb. Technics.

lc. General questions (induction, determination, regulation, organization, symmetry and asymmetry, gradients, etc.).

HV. The shape of cells in certain early embryonic tissues. Chick, rabbit and man. F. Th. LEWIS

(Cf. Proc. Amer. Acad. Arts and Sci., 1949, 77, 147—186)

2a. Complete development, or development during special periods (e.g. early, late, etc.) of whole organism.

C. Breeding, larval development and ecology of Nereis V. 3.

diversicolor (Nereidae), Tharyx marioni (Cirratulidae) , Heteromastus filiformis (Capitellidae), (Polychaetes) .

R. P. DALES

C. Breeding habits, embryology and larval life-history V. 3.

history of Arenicola marina, Clymenella torquata (Polychaetes). G. E. NEWELL

(Completion of previous work published in J. Mar. Biol. Ass. 1948) C. Embryology of Enchytraeidae (Oligochaeta) .

M. PASCHMA. C. Elektronenoptische Studien iiber Plasmastruktur des

Eies von Tubifex. Mrs R. BISS

C. Embryology of Peripatus (Onychophora).

S. M. MANTON

D. Embryology of Branchiopods, esp. Crania. S. DIDING.

D. The developmental stages of ova and larvae of barnacles V. 3.

with special reference to the naupliar stages and

settlement. Tetraclita serrata, Octomeris angulosa,

Chthamalus dentatus, Balanus algicola, B. trigonus,

B. maxillaris and B. amphitrite (Cirrepedia) .

Miss E. E. SANDISON D. Embryology of the Cape Crawfish, Jasus lalandii

(Crustacea). C. von BONDE

D. Embryologie et developpement post-embryonnaire. V. 3.

Arachnides et Myriapodes. M. VACHON IV. 2.

D. Embryological development of Ammophila campestris

pubescens (Hymenoptera, Insecta) and dependence of

its velocity of microclimate. G. P. BAERENDS

D. Embryologische Studien an Ameisen. Formica rufa und Ilia. 2a.

andere Arten. K. GOSZWALD

D. Studies on the embryology of Insects. Cochlidion lima codes (Lepidoptera). P. J. HOLST CHRISTENSEN D. Embryonic development of Tropinota hirta. (Coleop tera). W. KLOFT



1.2



a.



114 1. 2a.



D. Early developmental stages of Insects. Polydrosus sericeus (Coleoptera, Insecta).

A. KRZYSZTOFOWICZ

D Early developmental stages of Insects. Agelastica alni

(Coleoptera) . B. W5 GLARSKA

E. Electron microscopical investigation on differentiation: Insemination, growth and differentiation of the egg of Limnaea. L. H. BRETSCHNEIDER

E. Embryoloqy of Cephalopods.

G. da FONSECA SACARRAO

V. Listing and investigation of the historical collection of II. 2.

the Institute containing a large number of embryological preparations. Vertebrates. Miss A. M. ELSHOUT fitude du developpement des Lamproies. Lampetra II. 2a.

fluviatilis, L. planed (Cyclostomes) . H. F. C. DAMAS Ilia. 2a. Embryology of certain Elasmobranchii.

C. von BONDE An investigation into the spawning habits and early development of the common carp, Cyprinus carpio.

Miss D. J. PEERS Embryology of the commoner Food Fishes of South Africa. D. H. DAVIES

Cinematographic study of morphogenetic movements. II. 2a.

Amphibians. C. H. WADDINGTON

Normal table of the development of Bufo arenarum.

W. BUNO Establishing of "normal stages" from fertilization till V. 3.

the end of metamorphosis (Normal Table). Xenopus laevis. J. FABER

L. Embryology of birds. F. ORTS LLORCA Ilia. 2a.

L. Cinematographic study of morphogenetic movements. II. 2a.

Birds. C. H. WADDINGTON

L. Stage series of chick embryo. V. HAMBURGER

L. Revision of Dr. Frank. R. LILLIE's textbook of embryology, "The Development of the Chick". Gallus domesticus. Howard. L. HAMILTON

L. Embryology of the cormorant Phalacrocorax carbo. II. 2a.

Z. FRANKENBERGER.

M. Mammalian embryology (first stages).

H. V. BRC3NDSTED

M. Early developmental stages in mammals.

M. RADKOWA and Z. SEMBRATOWA

M. Mammalian embryology. Miss N. B. EALES II. 2a.

M. Descriptive embryology. Mammalia.

W. J. HAMILTON

M. Embryology of mammals. F. ORTS LLORCA Ilia. 2a.

IIIb.2a.

M. A study of the early development (somite stages) of Elephantulus myurus jamesoni with special reference to the landmarks in organization. Miss Chr. GILBERT






1.2a. 115 1,3,

M. Embryology of Pedetes caffer. (Rodentia).

Mrs M. A. KNIEP M. Early developmental stages in the rat, Epimys norvegicus. K. SEMBRAT

M. Development of golden hamster, Cricetus auratus.

C. C. BOYER M. Development and reproduction in the hamster.

Miss M. WARD M. Embryology of primates, esp. Gorilla. II 2a

Z. FRANKENBERGER M. Embryology of baboon. J. GILLMAN

M. Morphology of early human and other primate II. 2a.

embryos. Homo, Pan, Papio and Macaca rhesus.

C. H. HEUSER M. A morphologic, descriptive study of human embryos, Hid. 2.

both normal and abnormal found in surgically removed uteri, in age ranging from 1 to 16 days of age.

A. T. HERTIG and J. ROCK

M. Description of two human ova; a 2 cell tubal specimen

and a blastula of A x /i days of age which have been

recovered this past year. A. T. HERTIG

M. Young human embryos. K. MAZANEC

M. Preparation of models and description of early human

embryos. 15 day, 17 day, 26 day, 3,5 mm. and 6 mm.

J. G. SINCLAIR

2b. Complete development or development during special periods (e.g. early, late, etc.) of part of the organism (e.g. head, tail, limbs, etc.).

D. Embryological metamery of insect head. Periplaneta

orientalis (Blattodea, Insecta) . A. KRZANOWSKI II. 2b.

M. Development of foot and hand in man. F. KALSBEEK

2c. Complete development or development during special periods (e.g. early, late, etc.) of cell- constituents and special substances.

C. Mitochondria during the development. Parascaris equorum (Nematoda). E. RADECKA

D. The distribution and relation to development of ribosenucleic acid, desoxyribose nucleic acid, -SH groups, alkaline and acid phosphatase in praeimaginal Drosophila melanogaster (Insecta). T. YAO

E. Development of nucleic acids and phosphatases in Limnaea stagnalis. A. MINGANTI

Early development.

Implantation, placentation and development of fetal membranes.

M. The placentation of Elephantulus myurus jamesoni.

C. J. van der HORST



1.3. 116 1.8.

M. The placenta of Tupaia javanica.

C. J. van der HORST M. Plnccntation-study of vascular pattern of endometrium II. 3.

throuqhout pregnancy. Macaca mulatta (Rhesus monkey). E. M. RAMSEY M. Studies of placenta related to twinning and to conditions of birth. (Three papers published). Homo.

J. G. SINCLAIR

4. Ovogenesis, spermatogenesis, structure of eggs and sperm, maturation, oviposition, fertilization (activation, partheno* genesis).

C. Reproduction, Cytology in Rhabdocoela. F. PAPI 1. 2a.

C. Fertilization, Pseudogamy, Cytology, Heredity in

Planarians. Species of Tricladida. M. BENAZZI I. 2a.

IIIc.2. C. Fertilization and Cytology in Planarians. Species of 1. 2a.

Dugesia ( Tricladida) .

Mrs G. BENAZZI— LENTATI C. Fertilization and Cytology in Planarians. Polycelis 1. 2a.

nigra (Tricladida) N. G. LEPORI

J. Oogenesis and vitellogenesis of various Amphibians. II. 4.

(under direction of I. PASTEELS) Miss M. WITTEK

K. Oogenesis of Reptiles. Lacerta vivipava. II. 4.

(under direction of J. PASTEELS) Miss M. WITTEK

M. The magnitudes of the pronuclei of fertilized ova.

Albino mouse. S. PESONEN

5. Cleavage.

6. Gastrulation.

J. Normal development of Xenopus laevis, especially 1. 7.

gastrulation and neurulation (for a normal table of

Xenopus laevis) (Anura).

P. F. FLORSCHOTZ and P. D. NIEUWKOOP M. Structure d'un oeuf humain au stade de la ligne primi- 1.3.

tive. Origine du mesoblaste. Mode de formation du

chorion villeux. W. BONIN

7. Neurulation (including development of neural crest).

Development of organ-systems.

8. Skin, dermal formations (exo- skeleton, teeth, feathers), sense organs and glands of skin (including mammae) and pigment patterns.

General subiects. E. Factors involved in the development of the shell in the II. 8.

mollusca. Paludina viviparus. Helix pomatia and Nucella lapillus. Miss J. E. M. HEAYSMAN



1.8. 117 1.9.

M. The morphological and microchemical development of Nib. 2b. c.

the epithelial fat of the skin, with special regard to the

vernix caseosa. Homo.

A. BOD and S. KROMPECHER

Teeth. M. The development of the teeth. Insectivora. II. 8.

Miss M. E. KINDAHL M. Early development of human teeth. S. C. WILLIAMS

Sense organs. J. The study of the normal development of the lateral IV. 5.

lines in an amphibian with observations on their regenerative capacity. Xer.opus laevis (Anura).

G. M. TRUSLOVE

Colour patterns. I. Investigation of the terminal phases of differentiation

of colour patterns in fish. H. B. GOODRICH

L. Colour and pigment-differentiation in the bird's feather. IIIc. 2.

Melopsittacus undulatus. H. STEINER

Nervous system, ganglia, nerves and enveloping membranes.

F. Development of the neural system of Balanoglossus kowalewskii. (Enteropneusta) .

J. JANSSENS and G. VANDEBROEK

G. Differentiation and morphology of nervous tissue in Coelenterata. S. LEGHISSA Central nervous system.

V. Differentiation and morphology of nervous tissue in Vertebrates. S. LEGHISSA

V. Histogenesis of neuroglia. Vertebrates.

V. KORNFELD

I. Endhirnentwicklung. Teleostier. H. HEIMANN

J. Survey of the motor regions of the brain of Amblustoma. With a view to a morphological and functional separation of each. J. PIATT

M. Ricerche sullo sviluppo dei centri nervosi nell'uomo e nei mammiferi. V. PRETO PARVIS

M. Development of chromophil substance in central nervous system. Guinea pig and man.

A. LAVELLE and W. F. WINDLE

M. Entwicklungsfragen am Kaninchenhim. HARDE

M. Development of fiber tracts in brain of human embryos of 4th to 7th week. W. F. WINDLE

M. Study of the histogenesis of the various layers of the cortex of the different areas of the brain during embryonic and fetal development. (Golgi's method and Nissl staining). Sheep. G. GODINA

M. Developpement du systeme nerveux central, surtout l'encephale et specialement le diencephale. fitude structurale en rapport avec l'apparition des fonctions. Rat. P. DESCLAUX. A. GIROUD

et J. TEYSSEYRE



1.9.

M



118



1.9.



II. 9.

IIIb.9.

1.18.


II. 9. IIIb.9.



Development of diencephalon and hypophysis in man. I. 18.

f W. H. BOUR, J. DANKMEYER and W. LUYENDIJK M The development of hypothalamic fiber connections in the golden hamster fetus as well as in young specimens. Cricetus cricetus (Rodentia). J- AUER.

M. Morphological investigation of the cetacean nervous II. 9.

system, particularly the development of the cerebellum. Balacnoptera musculus. J. JANSEN

M. Endhimentwicklung. speziell der Rinde und Bauplan. 11.9.

Mans und Mensch. K. FEREMUTSCH

Accessory organs. J. Embryological development of the roof of the IV ventricle. Amblystoma mexicanum. J. ARIfiNS KAPPERS J. Normal development of pineal organ and paraphysis. Amblustoma mexicanum and Xenopus laevis.

J. C. van de KAMER K. Development and function of the paraphysis in Lacertilia. Lac. muralis, Lac. viridis and Lac. vivipara.

J. ARIfiNS KAPPER Ganglia and nerves. I. Origine des ganglions craniaux aux depens des placodes epiblastiques. Amia calva. W. BONIN

L. Epithelio-neural bodies in the chick.

Miss M. V. DREYER

M. Contributions of the neural crest and epibranchial

placodes to the oriqin of cranial ganglia in mammals.

R. A. KNOUFF M. Developpement du nerf facial (peripherique). Rameaux transitoires et definitifs. Leur composition, leur distribution. Cobaye. J. A. BAUMANN Sympathetic and intramural nervous system. V. The autonomous nervous system. Vertebrates.

J. BOEKE L. Development of the sympathetic. Birds.

A. Celestino da COSTA M. Development of the sympathetic. Mammals.

A. Celestino da COSTA M. Histogenesis of the nervous cells of the sympathetic I. 13.

nervous system of the intestinal tract. Sheep.

G. FILOGAMO M. Growth and development of intramural autonomic nerve I. 13.

plexus of the stomach and small intestine by the silver impregnation methods and experimental nerve cuts. Albino rat. J. C. SZENTPfiTERY

Meninges. J. Development of the meninges and its connection to the II. 9.

circulation of cerebrospinal fluid. Amblystoma mexi- IIIb.9.

canum. J. ARIfiNS KAPPERS

M. Development of meninges of spinal cord. Homo sapiens.

E. C. SENSENIG



I. 10. 119 I. 11.

10. Special sense-organs (nasal organ, eye and ear).

Eye.

J. The study of the normal development of the cornea of

the eye in an amphibian. Xenopus laevis.

D. R. NEWTH M. Development of the eye in Tarsius spectrum, (development of functional adaptations).

L. A. v. d. MOLEN

Ear. I. The development of the ear and associated structures

in the Lamprey. (Cyclostomes) . A. FISK

}. Development and phylogenetic origin of the columella II. 10.

auris in Amphibia. Amblystoma mex., Triton taen. and

Xenopus laev. J. H. BIJTEL

M. Quantitative description of development of the otocyst.

Oryctolagus cuniculus. M. ABERCROMBIE

M. The development of tympanic region and skull of I. 11.

Tarsius spectrum. C. J. BROERS

M. Embryology and anatomy of the middle and internal

ear. Homo. T. H. BAST

M. Study of the ear by modern methods involving use of

plastics and photographic procedure. Homo.

T. W. WILLIAMS



11. Embryonic temporary endo- skeleton, skeleton, skull and joints.

Skull.

I. Development and morphology of the skeleton of the 11.11.

head. Petromyzon (Cyclostomes). A. G. JOHNELS V. 3.

I. The development of parachordals and trabeculae in the Lamprey. (Cyclostomes).

A. FISK and Miss M. TRIBE J. Ontogenesis of the skull of Helcophayne purcelli. II. 11.

C. M. v. d. WESTHUIZEN V.3.

J. Ontogenesis of the skull of Ascaphus tonei. 11.11.

G. A. v. EEDEN V. 3.

M. The appearance and development of early ossification centers in the face of human embryos.

G. G. ROBERTSON Truncal skeleton. V. Histogenesis of fusion of parallel bones. Hyla (Am- 11.11.

phibia), Rattus (Mammalia), etc. P. D. F. MURRAY J. Ontogenesis of the breast-shoulder apparatus and of I. 12.

the skeletogenous strata. Xenopus laevis. 11.11.

R. van PLETZEN 11.12.

V.4. M. Development of vertebral column in Man.

A. PEACOCK M. Knee-joint development in Homo. J. MOLL



1. 11



120 1.15.



M. Development and growth of bones, with special reference to the epiphyseal cartilages. General survey of epiphyseal cartilages in various bones and at different ages. Dog. cat, rat and man. G. S. DODDS

12. Muscular system.

L. Ontogenesis of the musculus orbitoquadratus and II. 12.

"triqeminal" musculature. Spheniscus demersus.

I. X. PRINS

13. Alimentary tract.

M. The development of the oesophagus epithelium and mus- 11.13.

culature in its causal and functional aspect. An initial

study to regenerative work. Man and rat.

S. KROMPECHER M. Development and appearence of the heparinocytes. II. 13.

Human and other mammal embryos. G. HJELMAN

14. Respiratory -organs, (including swim-bladder).

J. Structure of larval pharyngeo-branchial apparatus as 1. 13.

a respiratory and food-collecting organ. Xenopus laevis.

L, van DAM M. Development of the pharyngeal derivates. Syrian II. 14.

Hamster. C. E. KLAPPER

M. Development of pharyngeal region. Homo. I. 13.

F. D. GARRETT

M. Development of the branchopulmonary segments. Homo

sapiens. E. A. BOYDEN and L. J. WELLS

M. Studies on the development of mammalian lungs. Talpa

europaea (Insectivora) .

P. J. HOLST CHRISTENSEN

15. Heart, vascular system and blood.

Heart.

D. Development of heart of Insects. Agelastica alni (Co leoptera). A. CZAPIK

L. Embryol. development of the nodal tissue in the avian

heart. de MEYER

Vascular system. I. The respiratory vessels of the yolk sac in the trout.

A. GAZDA I. The development of the gill vessels in the trout.

W. SOLEWSKI J. Development of the blood vessels in the frog, Rana

esculenta (Salientia). S. STRAWlNSKI

]. Complete development of the veins and arteries. Xeno P"s ^evis. N. A. H. MILLARD

K. Investigation of the development of the artery-arches in

turtle embryos. v. d. STELT



1.15. 121 1.17.

M. On the appearence of elastic tissue in the vessels of human foetus. M. MUSTAKALLIO

M. Development of aorta, art. pulmonalis and ductus Botalli. Mammalia. Miss E. ODfi

M. Ontogenesis of commissural connexions of the vena pudenda externa and v. p. interna in an advanced human embryo. D. VERMAAK

M. Development of vascular pattern of teeth, mouth and face. Homo. B. N. KROPP

M. Vascular patterns in the developing nervous system. 1. 9.

Homo sapiens. J. H. PERRY

M. Study of the capillary bed in various organs, making use of special technique to visualize the capillaries. Illustrated by sterioscopic photography. Various small mammals. T. W. WILLIAMS

M. Correlated fetal and maternal blood studies at time of birth. (The data have been collected on cell types and distribution and on placental structure. Statistical analysis is yet to be done). Homo. J. G. SINCLAIR

16. Coelomic cavity, endothelia, lymphatic system and connective tissue.

Coelomic cavities and endothelia.

M. Development of the pleural sacs and diaphragm. Homo

sapiens. L. J. WELLS

Connective tissue. I. Observations on the connective tissue of the head. II. 16.

Petromyzon (Cyclostomes). A. G. JOHNELS V. 3.

M. Development of the mediastinal connective tissue.

Mammalia. W. A. BAX

17. Urogenital system (development and structure), sex deter' mination.

Development of the urinary system.

LV. Development of the kidneys in Anamnia. Amphibia

anura and Teleostei. K. W. SZARSKI

M. Development of urinary bladder of Homo. a. openings

of ureters and Wolffian ducts; b. musculature.

L. J. W. GYLLENSTEN

Development of the gonadal system. L(?). Embryol. development of the innervation of the gonads. 1.9.

Birds (?). E. van CAMPENHOUT

HV. Development of genital tract in domestic animals. Birds

and Mammals. G. KREDIET

M. The bursa ovarica of Elephantulus myurus jamesoni.

J. AUSTOKER M. Elephantulus myurus jamesoni going into anoestrus.

C. J. van der HORST M. Post-partum phenomena in Elephantulus myurus

jamesoni. C. J. van der HORST



I. 17.



122 M9.



M Development of the gonads and genital tract in whales.

Jhr E. W. van LENNEP M fitude du developpement embryonnaire normal de l'ap pareil genital de la Sottris. A. RAYNAUD

M Histology of uterus and ovaries in reproductive cycle 11.17.

of primates. Chiefly Macaca rhesus. G. W. CORNER Ilia. 17.

M Eierstock, Menstruation, funktioneller Bau von Tube und Uterus. Homo. E. HINTZSCHE

M Development of uterus and ovary in man.

J. DANKMEYER and Miss A. DEKKER Sex-determination.

M. fitude d'un free-martin naturel. Boeuf. Miss D. HAY Hid. 3.

18. Endocrine glands (development, structure and functioning).

General subjects. D. Histogenese inkretorischer Organe von Lepidopteren IIIc. 2.

bei der Wildform und bei Mutanten. V. 2.

Miss M. REHM I. Studies in progress on the development of the endocrine 11.18.

organs in the Cyclostomes and their histophysiology V. 2.

during metamorphosis. W. J. LEACH

Adrenals. L. Development of the adrenals. Birds.

A. Celestino da COSTA M. Development of the adrenals. Mammals.

A. Celestino da COSTA M. Ricerche sullo sviluppo delle ghiandole surrenali nei

mammiferi. V. PRETO PARVIS

Hypophysis. L. Development of the anterior hypophysis of the blackheaded gull. Lams ridibundus. J. OORT L. Development of gonads, hypophysis and hypothalamus 1. 9.

in birds. Chick, duck and pigeon. I. 17.

I. ASSENMACHER and J. BENOIT M. Origin and development of the human pharyngeal

hypophysis. R. C. BAKER and L. F. EDWARDS

19. Growth and differentiation, (including mitosis).

J. Allometrisches Wachstum bei Amphibien.

F. E. LEHMANN und diverse Mitarbeiter



II. 1. 123 II. 2a.

II. Comparative embryology.

la. Theoretical problems.

V. Some aspects of the problems of homology (with sp. ref. to the bicentenary of the birth of GOETHE). Vertebrates. G. R. de BEER

V. New embryological evidence of the "biogenetic law" in connection with the phenomenon of iteration and convergence, rudimentation and adaptation. Vertebrates.

H. STEINER

lb. Technics.

lc. General questions. (Induction, determination, regulation, organization, symmetry and asymmetry, gradients).

M. Relations between organweight and bodyweight in II. 19.

ontogeny. Various mammals. J. MOLL

2a. Complete development or development during special periods (e.g. early, late, etc.) of whole organism.

EV. + V. The general comparative, descriptive and experi- I. 2a.

mental embryology of the Metazoa and their classifi- Ilia. 2a. cation. The place of the Cycloneuria (Echinoderma, Enteropneusta, Pterobranchia and Chaetognatha) in the animal kingdom. G. VANDEBROEK

EV. + V. Comparative organogenesis in Protostomes and 1. 2a.

Chordates. G. VANDEBROEK

EV. -f- LV. Morphogenetic movements during gastrulation of I. 2a.

Coelenterata, Enteropneusta and lower Chordates.

G. VANDEBROEK

C. "The development of Dasybranchus caducus (Poly- 1. 2a.

chaeta) from egg to pre-adult". Egg deposition, culture methods, day to day observations and records of living larvae and juveniles, study of fixed material.

C. G. BOOKHOUT

C. Embryology and development of Haploscoloptos bustoris I. 2a. (Polychaeta) . G. C. BOOKHOUT and E. C. HORN

D. Cytochemical observations on oogenesis and develop- 1. 2a. ment of Insecta. Acanthocelides (Cl) and Drosophila II. 4. (Dipt.). J. MULNARD

E. Untersuchungen iiber Larvenentwicklung mariner Gas- 1. 2a. tropoda (Prosobranchia) . A. PORTMANN

V. Untersuchungen iiber embr. und postembryonale Entw. I. 2a.

der Wirbeltiere, vor allem postembryonale Phase.

Vertebraten, vor allem Vogel. A. PORTMANN

J. Development of Leiopelma archeyi and Ascaphus truei I. 2a.

(Amphicoelous Anura). N. G. STEPHENSON

K. General survey of Turtle development. Chrysemis, Pseu- I. 2a.

demys and Chelone. J. J. PASTEELS



II. 2a.



124 II. 7.



M Descriptive and comparative embryology of Primates. 1. 2a.

H P. K. CHANMUGAM

2b. Complete development or development during special periods (e.g. early, late, etc.) o[ part of the organism (e.g. head, tail,

limbs, etc.).

V. Development of the tetrapod-limb with special reference I. 2b.

to Mammals (embryological evidence of their aboreal origin). Amphibia, Reptilia, Aves and Mammalia.

H. STEINER K. Development and morphology of the head structures in I. 2b.

a large number of species of reptiles, studied mainly by serial sections of the forms below.

A. d'A. BELLAIRS L. Cranial ontogenesis of Spheniscus demersus. 1. 2b.

A. W. CROMPTON

2c. Complete development or development during special periods (e.g. early, late, etc.) of cell-constituents and special substances.

D. Study of the nucleoles of the giant cells of Diptera 1. 2c.

(Insecta). J. MULNARD

Early development.

3. Implantation, placentation and development of fetal membranes.

M. Comparative morphology of the fetal membranes. 1. 3.

Mammalia. H. W. MOSSMAN

M. Plazentation von Macroscelides (Insectivora) . 1.3.

D. STARCK M. Early development and implantation of mammals. 1. 3.

Insectivora (Hominidae). F. STRAUSS 1. 2a.

II. 2a. M. Placentation of Roussetus leschenaulti (Megachirop- 1. 3.

tera). H. FRICK

M. The structure of the placenta of Anomalurus. 1.3.

E. C. AMOROSO and G .R. de BEER

4. Ovogenesis, spermatogenesis, structure of egg and sperm, maturation, oviposition, fertilization (activation, parthenogenesis).

5. Cleavage.

6. Gastrulaton.

7. N emulation (including development of neural crest).

V. Studies in the derivates of the neural crest with special I. 7.

reference to dermal bone. Vertebrates. G. R. de BEER



II. 8. 125 H.ll.

Development of organ-systems.

8. Skin, dermal formations (exo-skeleton, teeth, leathers), sense organs and glands o[ skin (including mammae) and pigment

patterns.

General subjects.

V. Studies on the structure of the egg-tooth and the caruncle I. 8.

in amphibians, reptiles and birds. G. R. de BEER

M The eqg-tooth and caruncle of the Monotremes. I. 8.

G. R. de BEER and J. P. HILL

Lateralis system. I. Development and morphology of the lateralis system in I. 8.

the head. Dipnoans and Characinids. G. T. PEHRSON J. Development of lateralis system. Triton cristatus and 1. 8.

T. punctatus (Urodela), Rana agilis, R. arvalis and V. 4.

Bufo vulgaris (Anura). Miss K. MACS

9. Nervous system, ganglia, nerves and enveloping membranes.

General subjects. V. Determination and differentiation of nervous cells. 1. 9.

Reptiles, Pisces and Amphibians. A. STEFANELLI Ilia. 9.

M. Human and mammalian embryology with special refe- 1. 9.

rence to nervous system. J. D. BOYD Ilia. 9.

Central nervous system. V. Continuation of my paper (in 4 volumes) on develop- 1.9.

ment of the brain in fetal life. Vertebrates.

K. H. KRABBE I. Development and anatomy of the nuclei and nerve fibres I. 9.

in the brain. Polyptetus (Brachiopterygii) . R. OLSSON V. Origine du noyau tangentiel du nerf vestibulaire. — 1.9.

Son origine. Poissons, Batraciens, Reptiles et Oiseaux. A. MICHELI et M. NEIGER

Accessory organs. V. Comparative embryological study of pineal cytology. 1.9.

Vertebrates. J. C. van de KAMER I. 18.

Ganglia and nerves. I. Development and anatomy of the ganglia and peripheral I. 9.

nerves of the trigeminal complex and the trigeminal and I. 12.

facial muscles. Bdellostoma and Pettomyzon (Cyclos- 11.12.

tomes). T. J. J. V. LINDSTRoM

10. Special sense-organs (nasal organ, eye and ear).

M. Cytoloqie du developpement de la membrane olfactive. I. 10.

Mammalia. J. SLOTWInSKI

11. Embryonic temporary endo- skeleton, skeleton, skull and joints.

LV. Development of ribs. Salmonidrae, Cyprinodontidae I. 11.

(Teleostei) and Salamandta (Urodela).

Miss A. BUCHTOWNA



11.11. 126 II. 19.

I. Development of the vertebral column centra in Teleosts. I. 11.

Salmonidac and Cyprinodontidae. Miss J. ORSKA

1 Ontoqenesis of the skull of Hynobius fuscus. I. 11.

Miss K. PERITZ V.3.

M. Chondrocranium and Osteocranium of Scotophilus tern- I. 11

mincki (Microchiroptcra) . D. STARCK

12. Muscular system.

13. Alimentary tract.

L. Development of palate of the nightjar-N yctisyrigmus I. 13.

pectoralis. M. E. MALAN

14. Respiratory -organs (including swim-bladder).

I. Development of the air-bladder in Teleost Fishes. I. 14.

Xiphophorus. Mrs K. W. WINOWSKA

15. Heart, vascular system and blood.

16. Coelomic cavity, endothelia, lymphatic system and connective tissue.

LV. Treatise on the head coeloms during the development I. 16.

of lower vertebrates. (Thesis). B. WEDIN I. 16.

17. Urogenital system (development and structure), sex determination.

D. Structure and development of Genitalia in different I. 17. species of Drosophila (Insects). H. NATER

E. Recherches sur le developpement compare de l'appareil I. 17. genital des formes euphalliques et aphalliques chez Bu linus truncatus (contortus) (Gastropodes Pulmonis).

M. de LARAMBERGUE I. Differentiation of the gonads in Vertebrates. Teleos- I. 17.

teans and other Fishes. U. d'ANCONA Ilia. 17.

Illb. 17. M. Development of the urino-genital canals in domestic 1.17.

mammals. E. C. AMOROSO and G. R. de BEER

M. Comparative morphology of the reproductive tracts in 1.17.

mammals. H. W. MOSSMAN

M. The cytology and histochemistry of the uterus and II. 3. c.

placenta. Mammalia. G. B. WISLOCKI

18. Endocrine glands (development, structure and functioning).

19. Growth and differentiation (including mitosis).

D. Growth and relative growth in Arthropods. I. 19.

M. ABELOOS M. Growth and relative growth in Mammalia. I. 19.

M. ABELOOS



Ilia. 1. 127 Ilia. lc.

Ilia. Experimental developmental morphology.

la. Theoretical problems.

EV. -|- V. Biologische Synthesen (Im Druck). Invertebraten I. la.

und Vertebraten. L. v. UBISCH Illb. la.

IIIc. la.

lb. Technics.

EV. 4- V. General embryological methodology. Invertebrates and Verre6rares. J. H. WOODGER

M. Development of technical procedures for experimental work on the mammalian embryo. White rat.

E. K. HALL M. Transplantation of mammalian ova. Mus musculus. Illb. 3.

R. A. BEATTY and M. FISCHBERG IIIc. lb.

lc. General questions. (Induction, determination, regulation, organization, symmetry and asymmetry, gradients).

General subjects. V. Das Leben des Keimlings, Aufsatze iiber funktionelle Illb. lc.

Embryologie. Vertebraten. K. PETER

J. Recherches sur le determinisme de la symetrie bilaterale Illb. lc.

chez les Vertebrates. Amphibiens. Hid. 1.

P. VINTEMBERGER J. The morphogenetic role of the yolk material in Am- Illb. lc.

phibians, studied by means of heterospecific transplantation. G. REVERBERI L. Origin of the asymmetry of the embryo. Gallus domes ticus. J. H. M. G. van DETH

Induction. H. Induction and competence phenomena during the Illb. 7.

development of Ascidia aspersa. G. VANDEBROEK H. The role of induction and morphogenetic movements Illb. lc.

in the brain and pigment spots formation in Ascidians.

A. MINGANTI and G. REVERBERI

J. Role des acides nucleiques dans les phenomenes d'induc tion. Batraciens. Miss D. PFLEGER

HV. Inductions in tissue cultures and potencies of cells in

tissue culture. Birds and Mammals.

M. W. WOERDEMAN L. Inductions morphogenetiques chez l'embryon de poulet,

a l'aide de la moelle osseuse de veau. V. PREDA

Determination. D. Determination of early developmental stages in Insects. Ilia. 2a.

Agelastica alni (Coleoptera) . S. SMRECZYnSKI

H. Ricerche sulla determinazioni embrionali precoci nelle

Ascidie.

E. URBANI and Mrs L. URBANI— MISTRUZZI G. Determination in earlv development. Echinoderms.

P. CITTERIO



Ilia. lc.



128 Ilia. lc.



J. Das Material iiber die Zusammenarbeit der Keimblatter

Versuche mit Grossdefekt an verschiedenen Regio nen der Neurula — soil weiter bearbeitet werden. Triton alpestris und TV. taeniatus. HSIAO-HUI CHUANG

(dariibcr erschien bcreits eine vorlaufige Mitteilung in Z. Naturforschg. 2b. 1947) T Determination in early development. Amphibians.

P. CITTERIO

Regulation. H. The influence of Li on the primitive development of Illb. 2a. e. the ascidian egg for analysing the potencies of regulation in this "mosaic" egg. Ascidia malaca.

P. D. NIEUWKOOP

I. fitude de la polyembryonie chez les Poissons. Truite.

G. STRUDEL

J. fitudes relatives a la regulation d'un blastomere II isole. Nib. lc. Triturus helveticus. A. DOLLANDER

J. Regulation in blastula and gastrula stage. Urodela and Anura. A. M. DALCQ in collaboration with coworkers

}. Analysis of the regulative potencies of the invaginating Ilia. 7.

archenteron roof and the induced neural plate along the dorso-ventral and cranio-caudal axes in the amphibian egg by heteroplastic transplantation of parts of the dorsal blastoporal lip. Triturus alpestris, taeniatus and cristatus. S. TOIVONEN and P. D. NIEUWKOOP

J. Regulation potencies in the neural plate. Formation of Ilia. 7.

neural crest by regulation after implantation of young neural plate tissue in the ventral side of neurulae, or by homogenetic induction after implantation in middle gastrulae (heteroplastic transplantation). Triturus tae~ niatus, alpestris and cristatus.

Miss M. BOUMAN, B. de PLANQUE and P. D. NIEUWKOOP

J. Ricerche su trapianti, espianti e parabiosi tra Anfibi anuri e Urodeli alio scopo di indagare i processi di regolazione, differenziazione nel quadro dei problemi della costituzione biologica.

G. COTRONEI, T. PERRI and L. URBANI— MISTRUZZI

J. Determination of: how entoderm regulates its lost parts, Ilia. 13. when entoderm loses its power of regulation, and whether the regulation power is lost gradually or suddenly at a certain stage. Moreover the question: whether the entoderm at the neural plate stage still retains its power of regulation when different portions of entoderm are removed. Afterwards earlier stages will be examined in similar way. Rana nigromaculata.

Miss M. P. TSENG

L. La polyembryonie et la monstruosite double experimen- Nib. lc. tales chez les Oiseaux. H. LUTZ



Ila. lc. 129 Ilia. 2a.

L. Production exp. de monstres simples chez les oiseaux.

E. WOLFF L. A study of artificially produced duplicitas anterior. Gallus domesticus.

M. ABERCROMBIE and Miss M. R. MORGAN



2a. Complete development or development during special periods (e.g. early, late, etc.) of whole organism.

General subjects.

A. Reproduction asexuee. Regeneration, fitudes des fac- IV. 2. teurs conditionnant l'apparition de la sexualite. Formation des cellules sexuelles. Developpement embryon naire. Eponges. P. BRIEN et Mme M. H. HERLANT

B. Experimental analysis of the early developmental 1. 2a. stages of the Sea-Anemones. Sagartia leucolena (Anthozoa). K. SEMBRAT

C. Reproduction asexuee. Regeneration, fitudes des fac- IV. 2. teurs conditionnant l'apparition de la sexualite. Formation des cellules sexuelles. Developpement embryon naire. Oligochetes.

P. BRIEN et Madame M. H. HERLANT

D. Structure and development of Cape Crawfish, Jasus 1. 2a. lalandii (Decapoda) . Mrs B. I. SILBERBAUER IV. 3.

V.3.

F. Normal and experimental development. Saccoglossus 1. 2a. (Enteropneusta) .

A. L. COLWIN and Mrs L. H. COLWIN

G. Reproduction asexuee. Regeneration. Etudes des fac- IV. 2. teurs conditionnant l'apparition de la sexualite. Formation des cellules sexuelles. Developpement embryon naire. Coelenteres. P. BRIEN

G. Entwicklungsgeschichte der Seeigel. (Monografie, c. 1. 2a.

100 S.). L. v. UBISCH Illb. 2a.

G. Development of Thyone (Holothuria) . L. H. COLWIN I. 2a.

H. Reproduction asexuee. Regeneration. Etudes des fac- IV. 2.

teurs conditionnant l'apparition de la sexualite. Formation des cellules sexuelles. Developpement embryonnaire. Tuniciers. P. BRIEN

H. Ascidian development. Ascidiopsis paratropa. V. 3.

R. L. FERNALD

I. Development of all systems of the toadfish in relation Illb. 2a. to behavior. Th. BATTY, H. C. TRACY

and J. WINBLAD J. Cytology during embryogenesis. Amphibians. Illb. 2a.

G. COLOMBO M. Early development. Mammalia. W. J. HAMILTON Illb. 2a. M. Studies on the rat egg. Mus norvegicus. Ilia. lb.

J. S. NICHOLAS



Ilia. 2a. d.



130 Ilia. 2b.



Physical treatment and physical methods (d).

LV. fitude de l'influence de la lumiere sur le developpement des Vertebres inferieurs. Cyclostomes et Batraciens.

H. F. C. DAMAS J. Stage series studies and metamorphosis in relation to I. 2a.

irradiated embryos. Triturus viridescens viridescens, Hid. 2.

Salamandridae. R. M. ROSENBAUM V. 2.

Chemical treatment (e). G. Morphological studies on lithium-treated developing sea urchin eqqs. Psammechinus miliaris.

S. A. A. BACKSTRoM H. Action of LiCl and NaSCN on the development of Illb. 2a. e. Ascidia aspecsa and Styela partita (Ascidians).

G. VANDEBROEK

J. The effect of substituted acetic acids on the early ontoqenetic development. Bufo and Rana, Anura; Triturus, Urodela. S. PESONEN

I Influence of ureum on the development. Amphibians.

J. C. FAUTREZ

J. L'effet de Taction de l'uraninite sur le developpement de l'oeuf de grenouille, Rana esculenta. V. PREDA

J. The influence of chloramine-compounds on the early Illb. 2a. e. development (neurulation and embryo- formation) of the Amphibian-egg. Triturus alpestris and Tr. taeniatus. F. E. LEHMANN and P. D. NIEUWKOOP

Complete development or development during special periods (e.g. early, late, etc.) of part of the organism (e.g. head, tail, limbs, etc.).

Head.

L. Recherches experimentales sur le developpement de la tete chez le Poulet (face et systeme nerveux). Gallus domesticus. W. HUBER et E. WOLFF

Limbs.

J. Symmetry relations in developing limbs. Amblystoma Ilia. lb. punctatum. W. A. STULTZ

J. Development of limbs of Amphibia with reference to the roles played by ectoderm and mesoderm. Various species of Amblystoma. R. G. HARRISON

J. Ricerche sull'indizione di arti soprannumerari mediante trapianti di parti di ibridi o di embrioni irradiati con raggi X. Bufo vulg., viridis and Rana esculenta.

T. PERRI Inter-relationships between the development of limbs Ilia. 9.

and the central and peripheral nervous systems. Amblystoma punctatum. W. A. STULTZ

J. Chemische Beeinflussung der Extremitatenbildung von Xenopus. P. TSCHUMI

L. Study of the differentiation of the limb structure. IIIc. 2.

Gallus domesticus. J. M. CAIRNS






Ilia. 2b. 131 Ilia. 2b***.

Tail.

J. Heteroplastic transplantation of the hind part of neural Illb. 2b. plate. Ambijstoma piinctatum, A. tigrinum (Urodeles) .

Z. SEMBRATOWA J. Analysis of the hind part of the neural plate in Rana palustris and R. silvatica (Anura).

Z. SEMBRATOWA J. Investigations concerning the process of outgrowth of Illb. 2b. the tail in Amphibia with special reference to the role of the chorda dorsalis and the tail mesoderm. Amblystoma mex., Triton taen. and Xenopus laev.

J. H. BIJTEL

2b*. Complete development or development during special periods (e.g. early, late, etc.) of isolated blastomeres.

H. Development of isolated blastomeres of the Ascidian egg. A. PISANO

H. Fusion of blastomeres. Ascidians. S. LEGHISSA

H. The organization of Ascidian embryos studied by the Ilia. 2a. d. influence of centrifugation; a. action on isolated parts; b. local action of centrifugation (recombination after centrifugation) G. VANDEBROEK

G. Large scale separation of macromeres, mesomeres and Illb. lb*, micromeres of the developing sea urchin egg.

P. E. LINDAHL

2b** . Complete development or development during special periods (e.g. early, late, etc.) o[ organ rudiments.

J. Vital staining of mesoderm and endoderm under the 1. 2b.** hindbrain and ear. Amblystoma punctatum.

S. WILENS

J. Experimental study of the origin and relation to sur- I. 2b.** rounding tissue of the notochord in Amphibia. Triton alpestris. S. MOOKERJEE

J. Lateral mesoderm explants in tail bud stage. Anura. Illb. 2b.**

L. RAUNICH

HV. Prospective areas in the chick and rabbit blastoderms.

W. BUNO and C. M. FRANCHI

M. Transplantation of early mammalian embryonic rudiments. Cricetus auratus. M. W. JOHNSON

M. Continued investigation by homologous and hetero- II Id. 2.

logous transplantation of embryonic material relating to its development in the anterior chamber in the eye using the method developed by H. S. N. GREENE. Material from human fetuses as well as Guinea pigs and mouse embryos will be used. B. L. NEWTON

2b*** . Complete development or development during special periods (e.g. early, late, etc.) of special tissues.



IIL,.2c. 132 Ilia. 6.

2c. Complete development or development daring special periods (e.g. early, late, etc.) of cell-constituents and special substances.

Early development.

3. Implantation, placentation and development of fetal membranes.

M. Implantation of blastocysts in Rhodentia.

J. KRAHELSKA M. Development, structure and functions of trophoblast. Illb. 3.

Homo, Rattus and Lepus. B. N. KROPP

4. Ovogenesis, spermatogenesis, structure of egg and sperm, maturation, oviposition, fertilization (activation, parthenogenesis).

E. Nature of polar plasms. Limnaea stagnalis (Gastro~ Illb. 4.

poda). Chr. P. RAVEN

H. Protoplasmic movements after fertilization of Ascidia

aspersa. G. VANDEBROEK

J. A continuation of the study of the origin of the diploid IIIc. 2.

and other chromosome numbers in parthenogenetically developed frog embryos. Rana pipiens and R. palustris.

Ch. L. PARMENTER M. The parthenogenetic development of unfertilized ova induced by chemical stimulation. Albino rat.

S. PESONEN

5. Cleavage.

D. Determination der Furchung und Sonderung der Ilia. 2a. Organanlagen bei Daphnia (Crustacea).

F. KAUDEWITZ

6. Gastrulation.

H. Morphogenetic movements during the gastrulation of Ascidia aspersa and Styela partita (Ascidians).

G. VANDEBROEK

H. The mechanics of gastrulation in Ascidia aspersa and Styela partita. G. VANDEBROEK

I. Mechanism of gastrulation in teleost eggs. The nature Illb. 6.

of the surface gel layer of the egg and its possible role in the cell movements (particularly epiboly) characteristic of teleost gastrulation. Extensive utilization of the methods of marking, wounding, transplantation. Fundulus heteroclitus (Osteichthyes) .

J. P. TRINKAUS



Ilia. 6. 133 Ilia. 7.

J. Centrifugation of Amphibian blastula-gastrula. Various Ilia. 7. d.

sp. of Urodela and Anura. J. J. PASTEELS

M. Morphogenetic movements in the primitive streak of

rat embryos. G. VANDEBROEK



7 . Neurulation (including development of neural crest).

Induction.

J. Mikrokephalie durch Defektoperationen in der Gegend des Urmundgriibchens von jungen Tritongastrulae. Triton alpcstris. R. SCHENK

J. Transplantation of prechordal material. Triturus (Urodela). J. GALLERA

J. Experiments on the head-organizer by means of X-rays and a new micro-surgical device. Amphibians.

H. A. L. TRAMPUSCH

J. The interaction of the roof of the archenteron upon the nervous system. Ambly stoma mexicanum.

J. S. NICHOLAS

}. The nature and mode of action of the evocator in amphibia. C. B. GOODHART

J. Regionale Induktion bei Urodelen. H. ENGLANDER Illb. 7.

}. Regional induction in relation to cell-arrangement of Illb. 7.

primary organizer, using organizer tissue dissociated into separate cells which are aggregated again to form tissue. Triton alpestris. E. M. DEUCHAR

J. Analysis of the neural induction. Transfer of inductive substances in horizontal direction through the presumptive neural plate (heteroplastic transplantation of ectoderm). Triturus taeniatus, alpestris and cristatus.

Miss A. KREMER, Miss E. BOTERENBROOD

and P. D. NIEUWKOOP

J. Modifications of the competence in Triturus taeniatus Illb. 7.

(Urodeles) after local action of LiCl.

E. BONfi and G. VANDEBROEK

L. Transplantation experiments on chick blastoderm in Ilia. lc. tissue culture, with particular reference to induction of the prechordal head and regulation of the primitive node. Gallus domesticus. M. ABERCROMBIE

L. Role of the Hensen knot. Induction in birds.

W. BUNO Neural crest.

J. The relationship of the neural crest to the orientation Ilia. 10. of the ear. Amby stoma tigrinum (Axolotl). P. FORD

J. Developmental potencies of the neural crest in Anurae. Xenopus laevis. L. C. STEVENS

}. Developmental potencies of neural crest in Anura (transplantations). Rana esculenta.

Maria A. BARBASETTI



Ilia. 8. 134 Ilia. 9.

Development of organ-systems.

8. Skin, dermal formations (exo- skeleton, teeth, leathers), sense organs and glands of skin (including mammae) and pigment patterns.

Formation of teeth. M. Tooth development. Rat. J. H. M. G. van DETH

M. Role of the odontoblasts in the formation of secondary

dentin. Mus musculus. Miss J. J. P. ZAAIJER

Feather and hair development. L. Study of the determination of details of the feather Ilk. 2.

structure, including both regional characteristics and

hereditary variations. Gallus domesticus. J. M. CAIRNS L. Embryological analysis of feather-growth. The problems I. 8.

of the "afterschaft" and of ,,diastataxy". Ratites and II. 8.

Carinatae. H. STEINER

Pigment pattern. L. The mechanisms whereby feather colour patterns are Illb. 8.

produced. IIIc. 2.

a) Interaction of pigment cells of known genotype with feather germ ("the builder" of the structural parts of the feather);

b) Factors regulating migration of pigment cells and their growth (multiplication) and differentiation (synthesis of specific melanin granules);

c) The rdle that sex and other hormones play in modifying the expression of pigment cells in color feather formation.

(Utilizing various techniques such as grafting and in vitro cultures). Gallus domesticus (various breeds and varieties). B. H. WILLIER, Miss M. E. RAWLES and students L. The role that sex and other hormones play in modifying Illb. 8.

the expression of pigment cells in color feather formation. Utilizing various techn. such as grafting and in vitro cultures, the various phases of the over-all problem are being investigated. Chick.

Miss M. E. RAWLES and B. H. WILLIER

M. The nature of the processes involved in formation of

pigment of the hair and skin of mammals, (mouse and

rat). Miss M. E. RAWLES

9. Nervous system, ganglia, nerves and enveloping membranes.

General subjects. H. The infundibular organ of Amphioxus. J. BOEKE 1.9.

J. Neuro-embryology. Bufo atenarum. W. A. FERREIRA 1. 9.

J. Differentiation in the nervous system. Amblystoma.

J. H. PERRY



Ilia. 9. 135 Ilia. 9.

Central nervous system.

J. Development of the central and peripheral nervous IHb.

system in relation to behavior patterns along Coghillian lines of investigation. Amblystoma punctatum.

G. M. LEE and P. G. ROOFE

T. Reaction of nervous cells to periphery. Amphibians.

G. BAFFONI

J. Transplantation of brachial cord segments in Amblystoma punctatum embryos. With a view to analyzing the factors responsible for normal cord structure and function; i.e., is continuity of neural axis necessary for normal form and function of specific parts? J. PIATT

L. Correlations nerveuses chez l'embryon de Poulet. Gallus domesticus. G. STRUDEL

L. Control of proliferation and differentiation of the ner- Illb. 9.

vous system. Chick. V. HAMBURGER and R. LEVI— MONTALCINI

L. Differentiation of sensory neurons. Gallus domesticus. 1. 9.

W. S. HAMMOND

L. Tissue culture of young isolated neuroblasts from special Nib. 9.

areas of brain, esp. cerebellum, trigeminal. Chick. IV. 5.

Miss M. J. HOGUE and S. C. WILLIAMS

L. Study of the consequences of the removal of the secundary optic vesicle on the organogenesis and histogenesis of the optic lobe. Chick. G. FILOGAMO

L. Morphological and experimental investigation of the 1.9.

pontine and inferior olivary nuclei in birds. Gallus domesticus. W. HARKMARK

L. Analysis of interrelations between parts of the embryonic spinal cord by means of defect experiments. Gallus domesticus. E. L. WENGER

M. Tissue culture of young neurons and glia cells from the Illb. 9.

different parts of the brain, especially from the cerebel- IV. 5.

lum. Also, the survival of neurons after death of the fetus. Human fetuses and newborn babes and adult monkey (rhesus and spider).

Miss M. J. HOGUE and S. C. WILLIAMS Accessory organs.

J. Experiments concerning the determination of pineal Ilia. 18. organ and paraphysis. Amblystoma mex., Triton taeniatus, Tr. alpestris and Xenopus laevis.

J. C. van de KAMER Neural crest.

J. Extirpation de la crete neurale cranienne chez la neurula de Rana esculenta. V. PREDA

J. Ricerche sperimentali sulla morfogenesi dei gangli spinali (Anfibi e Anuri). Z. FUMAGALLI

Sympathetic and intramural nervous system.

HV. Origin of sympathetic and parasympathetic nervous 1.9.

system. Chick and Reptilians. II. 9.

Mrs R. LEVI— MONTALCINI



Ilia. 9.



136 Ilia. 10.



L Development of the autonomic nervous system. Gallus 1.9.

domestic*;. W. S. HAMMOND

L Development of autonomic nervous system. Gallus

domesticus. C. L. YNTEMA

10. Special sense-organs (nasal organ, eye and ear).

General subjects.

1 Experiments on secondary inductors, mainly on sense

organs. Amphibians. H. A. L. TRAMPUSCH

Eye development,

J. The lens induction in a number of amphibian species. Ilia. lc. Rana clamitans and Rana catesbiana. S. RHODES (under direction of E. C. HORN)

L. Lens induction in vitro. Gallus domesticus.

J. H. M. G. van DETH

HV. Origine des cellules pigmentaires de la choroi'de chez les vertebres superieurs. A. BRINI

L. Study of the effect of the removal of the whole anlage of the eye (or of parts of it) on the organogenesis and histogenesis of extrinsic eye muscles, of the lids, of the lacrymal glands, of the naso-lacrymal duct. Chick.

R. M. AMPRINO

L. Study of the effect of the removal of the anlage of the rhombo-mesencephalon on morphogenesis and histogenesis of the extrinsic eye muscles. Chick.

R. M. AMPRINO.

L. A study of some of the features of the evocation of the I. 10.

scleral (sclerotic) bones in the chick embryo. This in- Illb. 10. eludes anatomical work, quantitative analysis of mitotic and degenerative activity, some histochemical investigations, and the experimental growth of isolated scleral bone primordia. Gallus domesticus. L. J. HALE

Ear.

J. Induction and differentiation of ear ectoderm. Ambly~ stoma punctatum. C. L. YNTEMA

J. Determination of the ear anlage. Rana esculenta.

Miss Maria A. BARBASETTI J. Induction and symmetry relations in the development of the internal ear. Amblystoma punctatum.

R. G. HARRISSON J. An experimental and morphological study of the Illb. 10. development of the ear with special respect to the V. 3.

endolymphatic duct and glands of Swammerdam. Rana temporaria. P. FORD

J. Experimental embryology of the otocyst and the micro- Ilia. 9.

placods of the cranial nerves. Amphibians.

J. C. FAUTREZ



Ilia. 11. 137 Ilia. 13.

//. Embryonic temporary endo- skeleton, skeleton, skull and joints.

General subjects.

G. The form of the pluteus in sea-urchin hybrids. Study Illb. 11. of skeletal development and bodily form. Strong ylocen- IIIc. 2.

trotus purpuratus, S. franciscanus and Dendraster ezcentricus (Echinoidea) . A. R. MOORE

Regeneration and differentiation of the notochord. Illb. 11. Triton species. E. HADORN IV. 5.

Skull.

An attempt to determine the origin of the trabeculae cranii and the branchial skeleton of the Lampetra planed (Cyclostomata). D. R. NEWTH

The development of the trabeculae cranii in perch embryos treated with LiCl. Perca (Osteichthyes) .

M. T. CLAES and G. VANDEBROEK The development of the trabeculae cranii in perch embryos from which the prosencephalon has been removed. Perca (Osteichthyes). G. VANDEBROEK

To study the influence of the optic vesicle on the Ilia. 10. development of head skeleton and accessory organs of the eye ball, by extirpation of the optic vesicle at tail bud stage. Rana nigromaculata. Miss S. C. LI

M. Comparative developmental morphology of bone for- 11.11.

mation of dog skulls. Canis familiaris. J. F. GUBBINS Truncal skeleton.

L. Experimental analysis of the development of the appendicular skeleton in the chick embryo. MASY

M. The qualitative adaptation of the surface of embryonic I. 11.

cartilage and bone, due to the influences of surrounding Illb. 11. tissues. Exper. alteration of these circumstances. A IV. 5.

causal and functional analysis on human embryos and young animals. Man and cat.

S. KROMPECHER and L. NfiBEL

12. Muscular system.

J. Further experimental modifications of muscle attachments in Amblystoma. E. K. HALL L. Developmental origin of the abdominal musculature by means of carbon reference marks. Chick.

Miss M. E. RAWLES and W. L. STRAUSS M. The development of rat muscle. Mus norvegicus.

J. S. NICHOLAS

13. Alimentary tract.

J. Localization of the factors which cause situs inversus in tadpoles by defect and inversion experiments. Removal and inversion of different parts of neural plate and chorda-mesoderm, or chorda-mesoderm, or lateral plate. Rana nigromaculata. Miss M. P. TSENG



Ilia. 13. 138 Ilia. 17.

}. Development of coiling in the intestine of anuran tadpoles. Rana pipiens. Norman E. KEMP

}. Intestinal canal can only be formed in the whole embryo; in the extirpated entoderm no canal formation ever occurs. By combination of entoderm fragments with different parts of mesoderm in explants the formation of the intestinal canal may be studied. Rana nigromaculata.

Miss M. P. TSENG

J. Origin and development of the oesophageal epithelium in Batrachians. Z. VACEK

M. Changes in the proctal epithelium in its embryonic and I. 13.

postfetal development, in grown up individuals of dif- Hid. 4.

ferent ages, and under pathological circumstances, with special regard to its microtopographic situation. Adequate experiments on animals. Man and dog.

S. KROMPECHER and Z. ZAKARIAS

14. Respiratory-organs (including swim-bladder).

15. Heart, vascular system and blood.

Heart.

J. Experimental analysis of the development of the heart.

Bufo arenarum. W. A. FERREIRA

and R. E. GONZALEZ MARINO

M. Structure of the coronary arteries at birth. Homo. I. 15.

W. F. WINDLE

L. Le developpement du systeme vasculaire. (coeur et systeme vasculaire embryonnaire et extra-embryonnaire). Gallus domesticus. F. STEPHAN

Vascular system and blood.

I. Development of blood and vascular system. Petromyzon- 1.15.

tidae (Cyclostomes) and Amia, Lepidosteus (Osteoganoids). L. RAUNICH

J. Blood island-development and differentiation in amphibians. Hyla regilla. R. L. FERNALD

16. Coelomic cavity, endothelia, lymphatic system and connective tissue.

M. ? Tissue culture of normal and damaged endothelium. Mammalia (?). R. ALTSCHUL

17. Urogenital system (development and structure), sex determination.

General subjects.

D. Field organisation of the genital imaginal disc. Droso- Illb. 17. phila species. E. HADORN IIIc. 2.

E. Recherches sur le developpement embryonnaire de Tap- II. 17. pareil genital hermaphrodite de divers Gastropodes, . IV. 5 differenciation gametes. Calyptraea (Prosobranches) et Pulmonis divers. M. de LARAMBERGUE



Ilia. 17. 139 Ilia. 18.

Germ cells. J. Localisation of the primary gonocytes in the early I. 17.

gastrula of Amphibians. K. SEMBRAT Ilia. 6.

J. Mit Hilfe der Exstirpation des Entoderms im Neurula stadium und der Defektsetzung in der Seitenplatte einer

Spatgastrula und Friihneurula soil die Entstehung der

Geschlechtszellen studiert werden. Rana nigromaculata.

Y. T. WANG }. Der Zeitpunkt der Determination und der Auswande rung der Geschlechtszellen werden mit der Wieder holung der oben genannten Versuchen in verschiedenen

Entwicklungsstadien zum feststellen versucht. Rana

nigromaculata. Y. T. WANG

L. Origine des cellules sexuelles secondares chez le poulet. I. 17.

V. PREDA

Gonad development. L. Experimentation sur la lere et la 2eme poussee de cor- Illb. 17.

dons sexuels. Poulet. A. A. HAMPfi

M. Untersuchungen zur Frage der Gonadenentwicklung 1.17.

beim Menschen und der Potenzen des Ovarepithels

beim Erwachsenen. G. TONDURY

M. Developmental potenties of the human fetal germinal Illb. 17.

epithelium in explants. P. J. GAILLARD

M. Les transformations de la glande interstitielle du testi cule au cours de son developpement. Cobaye.

C. MIETKIEWSKI

Gcniia! tract. L. La genese de l'asymetrie du tractus genital des oiseaux Ilia. lc.

et la regression des canaux de Muller. Gallus domes- Illb. 17.

ticus. Miss Y. OSTERTAG

Sex-Determination. J. Action des hormones gonadotropes sur le determinisme

du sexe chez la grenouille, Rana esculenta. V. PREDA L. Action des hormones gonadotropes sur le determinisme

du sexe chez le poulet. V. PREDA

L. Sterilisation et intersexualite chez l'embryon de Poulet

par irradiation aux rayons X. Mile B. SALZGEBER M. The experimental control of sex differentiation in the I.

embryo by means of hormones. Didelphys vitginiana II.

(Marsupialia). R. K. BURNS

Endocrine glands (development, structure and functioning).

General subjects.

L. Investigating the ontogeny of endocrine correlation and Illb. 18.

integration mainly by intracoelomic grafting techniques.

Chick. J. F. CASE

Special endocrine glands. V. The morphogenetical functions of the thyroid gland

in poikilothermic Vertebrates. Pisces, Amphibia and

Reptilia. K. SEMBRAT



Ilia. 18.



140 IHa. 19.



I. Development of the amphibian pituitary. Study of Illb. 18. independent or dependent differentiation of the partes buccales and pars nervosa of the pituitary. Hyla regilla.

M. E. EAKIN (assisted by Miss N. EATON, Miss E. OLDENBORG. and W. THURMOND) L Development of the thymus. Gallus domesticus.

H W. S. HAMMOND

M Histoqenese de la corticosurrenale. Le rat.

T. KURKIEWICZ

19. Growth and differentiation (including mitosis).

V. Recherches sur les transformations qui se produisent

dans les organismes et dans les tissus cultives in vitro

pendant l'accroissement. Vertebres. G. H. LEVI

V. Recherches sur les caracteres de la structure et des

proprietes biologiques dans les tissus cultives in vitro.

Vertebres. G. H. LEVI

L. Differentiation of early embryonic tissues in vitro.

Gallus. Miss D. RUDNICK

M. Statistical study of the parts of the nervous system and I. 9.

of the endocrine glands in the guinea pig. I. 18.

H. B. LATIMER M. Effects of low temperature on growth and reproduction

in mice, Mus musculus (Rodentia) . S. A. BARNETT M. Growth of the organs and systems of the rabbit in the I. 2a.

prenatal and postnatal periods. H. B. LATIMER

M. Prenatal growth and differentiation of the organs Ilia. 9.

(brain, cord, hypophysis, etc.) in the fetal puppy. Ilia. 18.

R. CORDER and H. B. LATIMER M. Studies on growth of various implanted tissues with the

rabbit's ear chamber technique.

E. R. CLARK and R. G. WILLIAMS



Illb. 1. HI IIIb.2a.

Illb. Experimental developmental physiology.

la. Theoretical problems.

EV. -j-V. Entwicklungsprobleme (Buch, c. 250 S.) Ever- I. la.

tebraten und Vertebraten. L. v. UBISCH Ilia. la.

Ilk. la. EV. + V. Entwicklungsphysiologie (Buch c. 100 S.)

Evertebraten und Vertebraten. L. v. UBISCH

lb. Technics.

I. Desinfection experiments on eggs. Fishes.

B. A. G. ENTZ M. Method of ova transplants. Mus musculus. E. FEKETE M. Cultivation of mammalian eggs. K. MAZANEC Ilia. lb.

lc. General questions. (Induction, determination, regulation, organization, symmetry and asymmetry, gradients).

G. Analysis of the gradients and the processus behind Ilia. lc. them in the sea urchin egg. S. HoRSTADIUS

T. L'induction chez les Amphibiens. Triton et Axolotl. Illb. lc.

R. A. LALLIER J. The motive power behind morphogenetic movements. Ilia. lc.

Amphibians. C. B. GOODHART

J. Selective cellular adhesion in embryonic germ layers. IIIc. lc.

Urodeles and Anurans. Ph. L. TOWNES

L. Influence of yolk on the germ-layers. Birds. I. TORO IIIc. 2.

2a. Complete development or development during special periods (e.g. early, late, etc.) of whole organism.

General subjects.

D. Embryonale und post-embryonale Entwicklungsge- IIIc. 2. schichte und Entwicklungsphysiologie bei Insekten.

K. HENKE mit Mitarbeiter

E. Embryonale und postembryonale Entwicklungsge- IIIc. 2. schichte und Entwicklungsphysiologie bei Mollusken.

K. HENKE mit Mitarbeiter E. Completion of some work on the developmental physiology of the squid, Loligo pealii (Cephalopoda).

Howard L. HAMILTON G. Monograph on Arbacia punctulata, including classified Ilia. 2a. compilation of all experimental work. (In preparation)

E. B. HARVEY

I. Biology of Lampreys (Cyclostomata) . (Including deve- I. 2a.

lopment and metamorphosis). E. W. BAXTER V. 3.

I. Breeding experiments with pikeperch eggs Lucioperca

sandra cup. et val. in moisture atmosphere.

B. A. G. ENTZ



Illb. 2a.



H2 IIIb.2a.



J Ecological and biochemical charcteristics of the first II. 2a.

stages of development of typical neotropical forms. V. 3.

South American Batrachians. J- M. CEI

J. Embryonale und postembryonale Entwicklungsge- IIIc. 2.

schichte und Entwicklungsphysiologie bei Amphibien.

K. HENKE mit Mitarbeiter L. Embryonale und postembryonale Entwicklungsge- IIIc. 2.

schichte und Entwicklungsphysiologie bei Vogel.

K. HENKE mit Mitarbeiter M Factors in fetal maturity. Homo, Macaca rhesus. Lepus II. 2a.

conic, and Ovis. S. R. M. REYNOLDS

Respiration (a). G. Respiration of sea urchin eggs in different stages of

development. Enzymatic constitution of eggs, kinetics of

enzyme action. Paracentrotus lividus, Psammechinus

miliacis and other sea urchins. H. BOREI

H Influence of Li on respiration and metabolism of the Illb. 2a. e.

Ascidian egg. Ascidia malaca. P. D. NIEUWKOOP

I. Ricerche sulla resperazione embrionale dei teleostei.

E. URBANI LV. Embryo metabolism, respiration. Pisces and Amphibians.

A. STEFANELLI

J. Azione degli antimitotici sul metabolismo respiratoria

degli Anfibi. E. URBANI

M. Respiratory physiology of fetus and newborn. Rabbit

and Human. F. F. SNYDER

M. Oxidative metabolism of mammalian eggs. Lepus cuni cuius. H. SHAPIRO

Metabolism and osmotic properties (b).

EV. Water permeability of marine eggs. Arbacia punctulata,

Asterias forbesii and Chaetopterus pergamentaceus.

H. SHAPIRO

I. Osmotic pressure and fish embrvos. Salmo trutta.

H. DATKOWNA L. Rate of metabolism during development. Domestic fowl.

C. C. BOYER

L. Carbohydrate and fat metabolism in chick embryos.

Gallus domesticus. H. CLARK

M. Waterpermeability of mammalian eggs. Lepus cuniculus.

H. SHAPIRO Cytochemistry (c).

C. Experimental and cytochemical embryology. Passalurus I. 2a. ambiguus (Nematoda). Ch. ANNEZ Illb. 2c.

D. Descriptive and cytochemical embryology. Artemia sa- 1. 2a. Una (PhyUopoda). Illb. 2c.

Mrs N. J P. E. FAUTREZ— FIRLEFYN

E. Physiological and biochemical studies of mosaic eggs. Illb. 2c. Mytilus edulis (Pelecypoda) . W. E. BERG

J. Biochemistry of development of frog embryos. Rana fusca (Anura). J. R. SHAVER



Illb. 2a. 143 Hlb. 2a.

Physical treatment and physical methods (d). J. Studies on the action of a heat shock on development IIIc. 2.

and cytochemistry on Amphibian eggs.

J. L. A. BRACHET J. Einfluss elektrischer Strome auf die friihesten Entwick- Ilia. 2a. d.

lungsstadien der Amphibien. H. HARTWIG

J. Azione dei raggi X sugli embrioni di Anfibi. studiata Ilia. 2a. d.

con il metodo della parabiosi.

Mrs L. URBANI— MISTRUZZI

Chemical treatment (e). E. Influence of Li on the development of Limnaea stagnalis

(Gastropoda). Chr. P. RAVEN

H. Effect of certain chemicals on development. Molgula, Ilia. 2a. e.

Ciona and Styela (Tunicata). A. L. COLWIN

V. Studies on the action of specific antisera on morphogenesis. Vertebrates. J. L. A. BRACHET The influence of malonitril on the development of Ilia. 2a. e. Amblystoma mexicanum. P. BANGMA Hid. 2. Effects of antimitotics on early development. Rana esculenta.

Maria A. BARBASETTI and P. PASQUINI Die Wirkung von Sulfa- Verbindungen auf die em- Ilia. 2a. e. bryonale Entwicklung von Rana nigromaculata.

Hsiao-Hui CHUANG Effect of metabolic analogs on morphological and bio- Ilia. 2a. e. chemical development. Amblystoma punctatum and Illb. 2c. Rana pipiens. Miss E. NOEL

(under direction of E. J. BOELL)

Effect of chemical inhibitors on the development of amphibian eggs. Rana and Amblystoma. T. S. HALL Action du Lithium sur le developpement embryonnaire. Illb. 7.

Triton et Axolotl (Urodeles). R. A. LALLIER

The effect of nicotinamide and a-ketoglutaric acid on Illb. 2b. e. insulin-induced hypoglycemia in chick embryos; relation to micromelia. Gallus domesticus. E. ZWILLING

Influence of hormones and vitamins (f).

Study of the reactions of diploid and triploid larvae to IIIc. 2.

pituitary hormones. Triturus viridescens. V. 2.

G. FANKHAUSER Thyroidectomy in diploid and triploid embryos. Effects IIIc. 2.

of thiourea, etc. Triturus viridescens. V. 2.

G. FANKHAUSER Nutrition of embryo (g).

Influence of different kinds of food on the development Illb. 19. of Xenopus laevis. J. FABER

L. Nutritional conditions in the incubating bird's egg.

E. WITSCHI

L. Investigating the nutrient requirements essential to mor- Ilia. 2a. g. phogenesis and growth of organisms in the early stages of chick development (pre-streak and streak blastoderms). N. T. SPRATT Jr.



[lib. 2a. I** Illb. 2c.

Iinmimological studies (h).

J. Studies of differentiation by immunological and other IIIc. 2

techniques. Triton alpestris. R. M. FREEDMAN

L. Investigating the ontogeny of tissue antegens by immunological techniques. Chick. J. D. EBERT

2b. Complete development or development during special periods (e.g. early, late, etc.) of part of the organism (e.g. head, tail, limbs, etc.).

2b* . Complete development or development during special periods (e.g. early, late, etc.) of isolated blastomeres. G. Centrifuging eggs, and development of fractions Ilia. 2b*. d. obtained by centrifugal force. Parthenogenetic mero- V. 3.

qony. Development of pluteus larva. Arbacia punctulata.

E. B. HARVEY

J. Study of certain metabolic aspects of cell migration in

vitro. (Glycolysis, respiratory quotient, effect of various

metabolic inhibitors). Triturus totosus, Tr. rivularis and

Ambly stoma punctatum. R. A. FLICKINGER

2b** . Complete development or development during special periods (e.g. early, late, etc.) of organ rudiments.

2b* **. Complete development or development during special periods (e.g. early, late, etc.) of special tissues.

HV. (?) Metabolic interaction between tissues. Exchange of metabolites between tissue components (epitheliumstroma) with different degrees of oxidative or anaerobic metabolism. The investigation is carried out with model tissues, such as cornea, as well as with tissue-cultures. S. COHEN and H. HERRMANN

2c. Complete development or development during special periods (e.g. early, late, etc.) of cell-constituents and special substances.

General subjects.

D. Karyologische Untersuchungen — Karyomerentropis- Illb. 4.

mus. Cyclops (Entomosttaka). H. STICH Illb. 19.

G. Correlations between structure and function of the cytoplasm. Sea-urchins. L. MONNfi

V. Investigations if there occur any changes in the nucleus Illb. 19.

in course of differentiation. Vertebrates. DANIELLI J. Localization of cell constituents in amphibian egg.

H. HOLTER Transplantation of cell constituents. Triton alpestris. Ilia. 2c.

C. H. WADDINGTON



Illb. 2c. a. 145 IIIb.2c.c.

Respiration (a). Metabolism (b). G. Sulphate metabolism in sea urchin development.

B. G. SWEDMARK G. Nitrogen metabolism in early sea urchin development studied by means of N-labelled ammonia.

J. M. T. HULTIN G. On surface reaction of the Sea urchin egg with special Illb. 2c. c. attention to phosphate-metabolism. On the dehydrogenase systems of the Sea urchin egg.

N. O. H. LINDBERG

J. Biochemical investigations about developmental physio- Illb. 2c. c. logy. Development of enzymes, embryonic metabolism. Rana and Amblystoma. G. ten CATE

L. Biochemical investigations about the developmental Illb. 2c. c. physiology. Development of enzymes, embryonic metabolism. Chicken. G. ten CATE

L. Protein metabolism in chicken embryo. Gallus gallus.

C. RIZZOLI Cytochemistry (c),

EV. Research in cyto-embryology and cyto-physiology on Marine Invertebrate eggs. D. P. COSTELLO

C. Chemical embryology. Sabellaria alveolata, Annelida. Ilia. 2a. c.

Chr. P. RAVEN

C. Histochemistry of nucleic acids in the gametogenesis II. 2a. c. and development of Ascaris. Patascaris equorum (Ne~ II. 4.

matodes). J. J. PASTEELS and J. PANIJEL

C. Nucleids acids during the organogenesis of Eisenia foetida (Annelida). G. VANDEBROEK

D. Phosphatase distribution in Crustacean eggs. Cymothoids, Asellus (Crust, hop.). M. DE NICOLA

D. A cytochemical study of the Insect egg (esp. the glycogen formation) during maturation and development. Cynipidea and other Insects.

M. K. KRAINSKA D. Development of enzymes in grasshopper egg and em- 1. 2a.

bryo. Melanoplus differ entialis (Orthoptera).

L. R. FITZGERALD

G. Serological and chemical studies on the proteins of

developing sea-urchin eggs. Paracentrotus lividus and

Avbacia lixula. H. P. PERLMANN

G. Proteins in embryonic development. Echinoderms. Ilia. 2c. c.

S. RANZI Hid. 2. G. Calcium distribution in the development of sea urchin eggs. Paracentrotus and Arbacia. M. de NICOLA

V. Physico-chemical properties of embryos: the yolk.

Salmo (Pisces). Lacerta (Reptilia) and Gallus (Aves).

H. DATKOWNA, Z. GRODZInSKI

and K. SWIERZAWSKA



Illb. 2c.c.



146 Illb. 2c. c.



V. Histochemistry of development of selected species of I. 2b. c. various vertebrate classes, of various organs and tissues IV. 4.

under varying physiological and pathological states, of V. 4.

metamorphosis, regeneration and senescence.

E. R. HAYES V Development of nucleoproteins. Aves and Amphibia.

Miss A. ORLANDI

LV. Behavior of nucleic acids in development of telolecithal I. 2c.

ova. (Especially the behavior of the nucleoli and their II. 2c.

development). Lower Vertebrates. P. L. RISLEY Ilia. 2c. c.

Histochemistry in the development of Cyclostomes. I. 2a.

R. H. SHELLHAMER The behavior of yolk and its different components in developing fish embryos. Cyprinus carpio.

B. KONOPACKA Nucleic acid synthesis in development. Fishes.

A. STEFANELLI Cytochemical observations on the first stages of Am- II. 2a. c. phibia (various species).

J. L. A. BRACHET and J. PASTEELS Histochemistry of amphibian development and meta- 1. 2a.

morphosis. R. A. KNOUFF V. 3.

Cytochemistry of amphibian eggs. Amblystoma mexicanum and Xenopus laevis. S. L0VTRUP

Utilization of yolk during morphogenesis of amphibians. Rana pipiens and Ambystoma maculatum.

Norman E. KEMP Quantitative biochemical determination of yolk distri- Illb. 6. c. bution in the axolotl gastrula. Ambystoma mexicanum.

J. R. GREGG Patterns of development of enzymes in embryos; differentiation of enzymes in relation to differentiation of functional ability in embryonic organs. Rana pipiens.

F. MOOG Development of oxidative enzymes in relation to nucleo- Ilia. 2c. c. proteins and various centrifugable elements in the amphibian embryo. Amblystoma punctatum and Rana pipiens. Miss R. GILMARTIN

(under direction of E. J. BOELL)

Hypertrophy of enzyme development in Amblystoma punctatum resulting from rearing embryos in solutions containing enzyme substrates. E. J. BOELL

Alkaline phosphatase activity during development. Amblystoma mexicanum and Xenopus laevis.

Miss E. J. KRUGELIS Phosphatase distribution in Amphibian eggs. Rana and Bufo. B. BATTAGLIA

Proteins in embryonic development. Amphibians. Ilia. 2c. c.

S. RAN2I Hid. 2.

Ricerche sull'acido ascorbico durante lo sviloppo 1. 2a. c. embrionale degli Anfibi.

Mrs L. URBANI— MISTRUZZI



Mb. 2c. c. 147



ilD. ZC. C.



HV. Enzyme activities of embryo and extra-embryonic mem- I. 3.

branes of chick and rat. L. R. FITZGERALD

HV. Enzymes in the development of the embryo. Cytochrome oxidase and lipase. Chick and pig.

J. ALVAREZ GUTIERREZ, W. BUNO and R. E. GONZALEZ MARINO

L. Nature of the yolk and its changes in development. Gallus domesticus. M. ATLAS

L. Patterns of development of enzymes in embryos; differentiation of enzymes in relation to differentiation of functional ability in embryonic organs. Gallus domesticus. F. MOOG

L. Plasma proteins during development in the chick embryo. G. W. NACE and A. M. SCHECHTMAN

M. Cytochemistry of early stages of development. Rodentia and Insectivora. A. M. DALCQ in collaboration

with coworkers

M. Histochemistry of mammalian eggs. Mus and Homo.

B. KONOPACKA Physical treatment and physical methods (d).

D. Development of Drosophila using genetic principles IIIc. 2.

and radio-active materials to trace the embryonic components. D. F. POULSON

J. Phosphorus metabolism in the amphibian embryo studied Mb. 2a. d. with radio-active phosphorus. Rana pipiens.

P. B. KUTSKY

J. Studies in protein synthesis in the amphibian embryo. /. Uptake of radio-active glycine. //. Uptake of radioactive methionine. Hula regilla. R. M. EAKIN Chemical treatment (e).

G. Continued studies on the protein chemistry of normal and lithium-treated developing sea urchin eggs. (Studies on amino acids, peptides and enzymes). Paracentrotus lividus, Psammechinus miliaris and other sea urchins. T. GUSTAFSON

J. Determination of Li in amphibian eggs, treated with LiCl. Amblystoma. J. }. BEZEM

J. Effect of specific enzyme poisons on embryonic development. Correlation of developmental events with activity of specific enzymes. Rana temporaria and Triton spp.

R. A. BEATTY Influence of hormones and vitamins (f).

L. Thymectomy and the calcium content of the bird's egg.

I. TORO

M. The embryos and fetuses of normal, vitamin E-deficient Mb. 2a. b. and vitamin E-rich guinea-pigs are being investigated Md. 2.

histologically and histochemically with special reference to the distribution of lipids and carbohydrates, in order to find out the influence of vitamin E on the development and on the lipid and carbohydrate metabolism. Cavia cobaya (Rodentia). Z. MENSCHIK



Illb. 2c.c. M8 nib. 4.

Nutrition of embryo (g). Immunological studies (h). J. Immunological characteristics of embryonic cytoplasmic granules. Rana fusca (Anura). J. R. SHAVER

Early development.

3. Implantation, placentation and development o[ fetal membranes.

M. Implantation of fertilized rabbit ova in the uterus.

J. W. BARENTS M. Study of egg transport and implantation; early development of trophoblast; embryo-maternal relationships during nidation. Mus. R. H. ALDEN

M. Permeability of the placenta in rat and guinea-pig. Investigation with isotopes.

J. DANKMEYER and C. B. HEYN M. Placental transfer. Common laboratory mammals. II. 3.

L. B. FLEXNER

4. Ovogenesis, spermatogenesis, structure of egg and sperm, maturation, oviposition, fertilization (activation, parthenogenesis).

Ovogenesis.

B. Cytochemical studies upon the ovogenesis of coelen- 1.4. terata. Amelia aurita. H. G. GODLEWSKI

J. Ricerche sul comportamento degli acidi nucleici durante

1'oogenesi. Amphibians. E. URBANI

L. Egg formation in birds. (Role of female hormone in Ilia. 4. f.

vitellogenesis). Pigeon, duck and chick. J. CLAVERT

Structure of egg and sperm, G. Continued studies on the "dorsoventral" (oral-aboral)

organization of the unfertilized sea urchin egg. Echino cavdium cordatum and other sea urchins.

T. GUSTAFSON G. On the origin and nature of the precursors of egg- Ilia. 4.

membranes in echinoidea. Dendraster excentricus and

Strongylocentrotus putpuratus. A. R. MOORE

G. Studies on the proteins of unfertilized and the first

stages of fertilized sea urchin eggs. S. LINDVALL G. The biochemical mechanism of the animalization of the Illb. lc-b.

unfertilized sea urchin egg. P. E. LINDAHL

H. Study of the cortex of Ascidian eggs. S. LEGHISSA

J. fetude dn revetement superficiel de l'oeuf. Tritirus hel- 1.4.

veticus. Tr. alpestris et Tr. cristatus. A. DOLLANDER I. Physiologie des Knochenfischspermas. A. ROETHELI

Meiosis.

C. Chemische Beeinflussung der plasmatischen Vorgange der Meiose bei Tubifex. A. ROETHELI



Illb. 4. 149 Illb. 4.

D. Ribonucleic acid suply to germ cells and determinism Illb. 17.

of meiosis. Asellus (Crust, hop.). G. VITAGLIANO D. Determinism of meiosis. Acellus (Crust. Isop.) and other

species. G. MONTALENTI

J. Conditions of the maturation of the egg and ovulation. Rana pipiens. M. ATLAS

Ovi position.

D. Biology of oviposition. Locusta. D. AGARWALA Fertilization

EV. Role of fertilizin and anti-fertilizin in fertilization: Me- IIIc. 2.

chanism of adjuvant-fertilizin agglutination of starfish sperm, specificity of antifertilizin in echinoids, agglutination of eggs and sperm by basic proteins. Various marine invertebrates, including asteroid and echinoid echinoderms. C. B. METZ

EV. A study of the factors which cause initiation of development. Arbacia punctulata (Echinoidea) and Chaetopterus pergamentaceus (Polychaeta).

L. V. HEILBRUNN

EV. Metabolic changes on fertilization. Arbacia punctulata, Asterias forbesii and Chaetopterus pergamentaceus.

H. SHAPIRO

F. Fertilization reaction. Saccoglossus (Entet opneusta) . 1.4.

A. L. COLWIN and Mrs L. H. COLWIN Ilia. 4.

G. Enzymatic destruction of jelly coat substances of the eggs. Echinus esculentus, Echinocardium cotdatum, Brisopsis lyr., etc. J. IMMERS

G. Studies on the chemical composition and the species specificity of its chemical composition. Action of dissolved jelly coat substance (fertilizin) on the spermatozoa. Paracentrotus lividus, Psammechinus miliaris and other sea urchins. E. J. E. VASSEUR

G. Investigation on the nature of the sperm-factor which brings about the fluidification of the jelly layer surrounding the eggs. Echinoderms.

LUNDBLAD and A. MONROY

G. On fertilizability of the egg under different conditions acting on sperm and eggs. Psammechinus miliaris, Strongylocentrotus droebackiensis and Arbacia lixula.

Miss E. WICKLUND

G. Biochemistry of fertilization, espec. on carbohydrate metabolism. Echinus esculentus, Echinocardium cordatum. Strongylocent. droeb., Paracentrotus lividus, etc.

J. IMMERS

G. Changements of dehydrogenase system at fertilization of the sea urchin egg. P. E. LINDAHL

G. Investigations on the biochemistry of fertilization in sea urchin eggs with special consideration to the changes occuring in proteins. A. MONROY



lllb.4.



150 nib. 7.



G. Behaviour and importance of Potassium during fertilisation of the sea urchin egg. Paracentrotus and Arbacia . Mrs A. MONROY— ODDO

G. Study of the importance of the phosphorylated compounds in the energetic changes accompanying activation of the eggs. Strong ylocentrotus purpuratus and Dendraster excentricus. A. H. WHITELEY

I The influence of the short wave radiation of the fertilization in Amphibia. J. PIOTROWSKA

J. The ultraviolet- and X-rays influence on spermatozoa under various experimental conditions. Rana temporaria.

H. G. GODLEWSKI

L Artificial inseminations with semen stored in different conditions. Gallus domesticus. J. H. MARCHLEWSKI

M. Place of fertilization of the mammalian egg. Rodentia 1. 4.

and Carnivora. F. STRAUSS

(under direction of H. W. MOSSMANN)

Parthenogenesis.

J. Initiation of artificial parthenogenesis in frog eggs. Rana fusca (Anuta). J. R. SHAVER

J. An analysis of the "second factor" in the first cleavage in the artificial parthenogenesis of the frog egg. Rana pipiens and R. palustris. Ch. L. PARMENTER

M. Mammalian parthenogenesis. Lepus cuniculus.

H. SHAPIRO

5. Cleavage.

6. Gastrulation.

J. The cumulative of oxygen-pressure and the production 1. 6.

of various degrees of blocking of the processes of gastrulation in the embryo of the frog, Rana pipiens.

O. E. NELSON

7. Neurulation (including development of neural crest).

J. The reactive capacity of Rana nigro-maculata to abnor- Ilia. lc. mal inductor seems to be weaker than that of Triton. Ilia. 7.

In order to find out whether the ectoderm of Rana is Illb. lc. less sensitive to inductive stimuli Holtfreter's experimental method (1947) was adopted. Isolated gastrular ectoderm of Rana was given a treatment with acid and alkali solution of various concentration for various length of duration. Thus it will be found whether the ph ranks which cause neural differentiation in Triturus (or Amblystoma) and in Rana ectoderm are different. Furthermore, the cause why Triturus and Rana ectoderms react differently to the same ph rank will also be studied. Y. K. LIAO



IIIb.7. 151 Illb. 8.

J. Essai de filtration, „in vivo", de la substance inductrice a l'aide de membranes de porosite connue, sur des explantats de jeunes gastrulas. Axolotl (Urodeles) .

Mile F. HUGON de SCOEUX J. Analysis of the neural induction. Separation of archenteron roof and overlying ectoderm by semipermeable membranes. Triturus taeniatus and Tr. alpestris.

P. D. NIEUWKOOP J. Radio-active tracer study of the metabolism of Illb. 7d. amphibian eggs, with special reference to the organizer. F. MOOG and E. L. WENGER J. Regionale Induktion bei Amphibien. Triton. Ilia. 7.

E. ROTMANN J. Regional specificity in living and dead organisers. Triton alpestris. C. H. WADDINGTON J. The chemical nature of the specific inductive substances (isolated from liver and kidney of the guinea-pig). Triton. Miss T. KUUSI J. The specific action of heterogenous inductors. Triton.

S. TOIVONEN

Development of organ-systems.

8. Skin, dermal formations (exo- skeleton, teeth, feathers), sense organs and glands of skin (including mammae) and pigment patterns.

Formation of teeth.

M. Factors governing dentin formation. Mus musculus.

Miss J. J. P. ZAAIJER Mammary gland.

M. Prenatal growth and differentiation of the mammary glands. Investigation of some cytochemical properties of mammary gland rudiments (ribonucleic acid, alkaline phosphatase, indophenoloxydase content) as compared with the same in skin epidermis, hair follicles and mesenchyme. Differentiation of mammary gland rudiments in vitro. Mus musculus and Lepus cuniculus.

B. I. BALINSKI

M. Recherches sur de developpement embryonnaire de la 1. 8.

glande mammaire de la Souris. Ula. 8.

M. FRILLEY et A. RAYNAUD Color pattern.

J. Investigation of problems relating the behavior, diffe- Ilia. 8.

rentiation and metabolism of Amphibian pigment cells, and the analysis of factors relating to the establishment of specific pigment patterns of larvae and adults. Species of Amblystoma and Triturus. H. E. LEHMAN

L. Role of hormones in differentiation of pigment patterns. Ilia. 8.

Investigation of estrogen and thyroid hormone as morphogenetic agents in pigment pattern differentiation.



nib. 8.



152 Hlb. 11.



The particular emphasis has been on the response of melanoblasts to these hormones and the role of epidermis in conditioninq this response. Gallus domesticus.

J. P. TRINKAUS

9. Nervous system, ganglia, nerves and enveloping membranes.

Central nervous system. M. Correlation of morphological, physiological and bio- Ilia. 9.

chemical differentiation of fetal cerebral cortex. Guinea

pig, L. B. FLEXNER

M. Factors responsible for the changes in brain metabolism

durinq its development. Rat and guinea pig.

D. B. TYLER J. Development of cholinesterase in the Amphibian ner- Ilia. 9. c.

vous system in relation to the functional maturation of

various regions. Amblystoma punctatum.

E. J. BOELL and S. C. SHEN J. Cholinesterase in brain hyperplasia and hypoplasia Ilia. 9c.

following eye transplantation and extirpation. Amblystoma punctatum and Amb. tigtinum.

E. J. BOELL and S. C. SHEN

Accessory organs. J. Function of the paraphysis cerebri in Amblystoma 1. 9.

mexicanum. J. ARIfiNS KAPPERS II. 9.

L. Development of paraphysis in birds and the circulation 1.9.

of the cerebrospinal fluid. Gallus. II. 9.

H. L. LANGEVOORT

10. Special sense-organs (nasal organ, eye and ear).

D. Biochemical studies of the eye pigments in Drosophila melanogaster. CI. W. CLANCY

V. Biochemical Embryology: Serological investigations about development of organ-specific substances (lens of the eye). Rana and chicken. G. ten CATE

//. Embryonic temporary endo- skeleton, skeleton, skull and joints.

V. Researches on the time of appearing of lipoids in the embryonic cartilages.

L. BEREK, I. NAGY and Gy. SAVAY V. The mechanism of deposition of phosphorus and other mineral components of bones and teeth, as revealed with the help of radioisotopic tracers and the "coated autograph" technique. White Rat. the Golden Hamster (Cricetus aureus), the Frog tadpole. Small reptiles of the order Squamata are also to be used shortly.

L. F. BELANGER L. Influence of vitamin D. on the calcification of developing bone-tissue in explants. Gallus domesticus.

C. H. HOGEWONING



Illb. 11. 153 Illb. 13.

L. Influence of estrogens on the development and calcification of embryonic endosteal tissue in vitro. Gallus domesticus. C. H. HOGEWONING



12. Muscular system.

V. Development of myosin and actin. Vertebrates. Ilia. 12.

M. CIGADA

L. The chemistry of muscle differentiation. Fractionation of proteins, determination of nucleic acids in mitochondria, nuclei and cytoplasm of muscle tissue in differentiated state at various stages of differentiation of fibrils and cross-striation during development of isolated somites and undifferentiated mesoderm. Chick.

S. COHEN and H. HERRMANN

M. The development of actomyosin in developing rat muscle. Mus norvegicus. J. S. NICHOLAS

M. Studies of various protein fractions in developing muscle in relation to changes in physical properties and the development of contractility. Mus norvegicus albinus. (under direction of E. J. BOELL)

G. de VILLAFRANCA



13. Alimentary tract.

General subjects.

M. Capacity of the fetus to digest food experimentally introduced into the fetal stomach. Mus (Rattus norvegicus albinus).

L. J. WELLS and J. F. HARTMANN Liver.

I. Function in the developing liver. Ameiurus nebulosus.

P. B. ARMSTRONG

J. Function in the developing liver. Ambly stoma punctaturn. P. B. ARMSTRONG

L. Protein turnover of different cell fractions of chicken liver studied by injection of N-labelled amino acids. The liver is afterwards homogenized and fractionated by centrifugation. J. M. T. HULTIN

M. The metabolic maturation of human liver. The capacity to synthesize creatine from glycocyamine and methyl donors is tested with livers of human feti of different inauterine age. S. COHEN and H. HERRMANN

M. Correlation of morphological, physiological and bio- Ilia. 13. chemical differentiation in fetal liver. Guinea pig.

L. B. FLEXNER

M. (Physiology of the fetus) Study of changes in pulmonary blood volume and changes in the liver at birth and in the early postnatal period in guinea pigs.

T. P. SINHA



IHb. M. 154 IHb. 17.

14. Respiratory-organs (including swim-bladder).

M. (Physiology of the fetus) Study of changes in pulmonary blood volume and changes in the liver at birth and in the early postnatal period in guinea pigs. T. P. SINHA

M. Changes in pulmonary blood volume at birth and in early postnatal life. Guinea pig. W. F. WINDLE

15. Heart, vascular system and blood.

Heart.

I. Heart rate and temperature. Salmo. Z. GRODZlNSKI J. Morphological, physiological and biochemical differen- Ilia. 15. tiation of the amphibian heart. Amblystoma punctatum and Rana pipiens. T. SIPPEL

(under direction of E. J. BOELL) L. Electrophysiology of embryonic heart tissue. Gallus

gallus. O. M. OLIVO

M. (Physiology of the fetus). Sex difference in human

coronary arteries. R. G. SIEKERT

Vascular system. M. Fetal vascular physiology. Homo, Lepus and Ovis. 11.15.

S. R. M. REYNOLDS Ilia. 15.

Blood. L. Development of blood cells of the chick embryo. Ilia. 15.

O. A. SCHJEIDE L. Serology of embryo. Birds. P. TROMBETTA

16. Coelomic cavity, endothelia, lymphatic system and connective

tissue. M. Biology of the reticuloendothelial system. I. TORO Ilia. 16.

17. Urogenital system (development and structure), sex determination.

Urinary system.

J. Developmental physiology of the pronephros in Amphibians. M. WSZELACZYNSKA

J. Developmental physiology of the pronephros in Amphibians. S. HILLER

J. Experiments concerning the factors which determine the normal course of the outgrowing pronephric duct in Amphibia. Amblystoma mex., Triton taen. and Xenopus laev. J. H. BIJTEL

Germ cells.

V. Histochemical studies of germ cells in relation to I. 17.

physiological alterations in the life cycle of the 11.17.

organism. P. L. RISLEY and A. L. SODERWALL Ilia. 17. c. Gonads.

D. Development of the gonads in Diptera. Psychoda. I. 17.

M. SARA' Ilia. 17.



IHb. 17. 155 Illb. 17.

D. Influence of radiation and chemicals on Drosophila- Ilia. 17c. ovaries. Drosophila melanoqaster (Insecta). IIIc.2.

N. BUCHER

V. Embryogenesis and differentiation of the gonads in 11.17.

Vertebrates. Amphibia and Amniota. E. VANNINI Ilia. 17. L. Investigations to the function of the gonad in the chick- Ilia. 17. embryo by implantation and castration experiments.

Miss M. M. HUIJBERS L. Effet de faibles doses d'hormones femelles sur le deve- Ilia. 17. f. loppement du testicule de Poulet. Difference entre la lere et la 2eme poussee de cordons sexuels.

A. A. HAMPE

Genital system.

J. Etude de Taction des hormones sexuelles dans l'embryo- Ilia. 17. f. genese sexuelle des Amphibiens. Discoglossus pictus and Pleurodeles Waltlii. L. GALLIEN

M. In vitro studies on mammalian fetal sexual structures.

Madame Yv. BERGERARD

M. Role de la vatamine E dans la reproduction. Rat et Ilia. 17. f. soucis. J. FRAPPIER Hid. 2.

M. Recherches experimentales sur les facteurs du develop- Ilia. 17. f. pement des differentes parties de l'appareil genital des embryons de Souris: Etude des capacites de developpement des differentes parties de l'appareil genital des embryons, apres destruction des ebauches de l'hypophyse et des glandes genitales.

M. FRILLEY et A. RAYNAUD

M. Action des hormones sexuelles dans Tembryogencse du Ilia. 17. f. tractus genital et des gonades chez les Insectivores. Talpa europaea. R. GODET.

M. Developmental physiology of the mammalian fetus. Foetal endocrinology and morphogenesis. Rabbit, rat and hamster. A. D. JOST

M. Influence of gonadal hormones on the development of the female genital system in the rat.

Miss A. M. KERKHOF

M. Recherches experimentales sur les facteurs du developpement des differentes parties de l'appareil genital des embryons de Souris: Etude de Taction des hormones sexuelles sur le developpement de l'appareil genital des embryons. A. RAYNAUD

M. Recherches sur le developpement embryonnaire des I. 17.

glandes prostatiques des Mulots (Apodemus sylvaticus) Ilia. 17. de sex femelle. A. RAYNAUD

M. Artificial deciduomes in rars. J.W.BARENTS 1.17.

M. Uterine contraction patterns in women.

S. R. M. REYNOLDS

Sex determination.

J. Experimental sex reversal of larval Amphibians.

E. PADOA



Illb. 17. 156 IHb. 19.

T Sex determination in amphibians by steroid hormones.

Anurans. C. Y. CHANG

J. Experimental sex determination by steroid hormones, and by overripeness of the egg. Anurans. E. WITSCHI

HV. Determination of sex in birds and mammals. Gallus domesticus and Cavia cobaya.

J. H. M. G. van DETH

L Recherches sur les hormones sexuelles embryonnaires. Ilia. 18. Oiseaux. Miss D. PFLEGER

L. Role des hormones dans la differentiation du sexe par Ilia. 17. les methodes d'injections d'hormones, des greffes coelomiques, des castrations embryonnaires, des explanations. Poulet. Mile Y. OSTERTAG, G. STRUDEL. Madame Em. WOLFF et Et. WOLFF

18. Endrocine glands (development, structure and functioning).

General subjects.

V. Transplantation of cultivated endocrine organs. Diffe- Ilia. 18. rences caused by autologous, heterologous and homologous media. Verre&rares. J. LANGMAN

M. Endrocrine studies and development. Mammals. Mus Ilia. 18. musculus. R. C. BLOUNT

Special glands.

J. Relations of the hypophysis to development. Ambly- Ilia. 18. stoma. R. F. BLOUNT

L. Primary genesis of thyroid follicles in explants and Ilia. 18. factors governing colloid formation. Gallus domesticus.

P. J. GAILLARD

M. Functioning of the glands of internal secretion in the fetus (hypophysis, gonads, adrenals, thyroid). Mus (Rattus norvegicus albinus) . L. J. WELLS

19. Growth and differentiation (including mitosis).

General subjects.

D. Plasmatische Verhaltnisse — Ectosomenphanomen. Cyclops (Entomostraka). H. STICH

G. Investigations if there occur any changes in the nucleus in course of differentiation. Sea urchin egg.

S. HORSTADIUS Mitosis.

EV. Quantitative investigations of the rate of cell division in marine eggs, in relation to cellular metabolism, and ionic environment. Arbacia punctulata, Asterias forbesii, Chaetopterus pergamentaceus. H. SHAPIRO

C. Chemische Beeinflussing der Tu 6//e*-Mitose durch Chinone. G. ANDRES

G. -f- J. Study with Cartesian divers of mitotic rhythm in IIIb.5.

metabolism during cleavage period. Echinoderms and Amphibians. E. ZEUTHEN



Illb. 19. 157

Growth.

L. The influence of different hormone-concentrations on the growth of tissue-cultures of embryonic origin. We search for the optimal concentration of several hormones (growth-promoting hormone, oestrone, a.o.) for different sorts of tissues. Gallus domesticus.

J. G. CODDENS

Differentiation.

J. Einfluss weiblicher Sexualhormone auf die Histogenese von Triton alpestris. R. SCHENK

J. Investigation of the relation of external media and Ilia. 19. physical surfaces on the migration and differentiation of Amphibian tissues in vitro. Species of Amblystoma and Triturus. H. E. LEHMAN

L. Nuclear differentiation and development. Chicken.

C. P. DAGG and A. M. SCHECHTMAN

M. The behavior of tissues from the early mouse embryo in tissue culture and in the anterior chamber of the eye.

C. GROBSTEIN



[lie. 1. 158 IIIc.2.

IIIc. Experimental embryology

Development and genetics. la. Theoretical problems, lb. General questions.

The role of the macronuclei. Ciliata. P. B. WEISZ C Phanotvpische Geschlechtsbestimmung. Planaria (Tut- 1.17.

hell). ' H. NUESCH 11.17.

D. Influence of maternal environment and cytoplasm of Illb. 2a. female-sterile mutants on egg development. Mode of action of the "fused" factor on development. Drosophila melanog aster. R. A. BEATTY

D. Development of imaginal discs, for the study of the cell Ilia. lc. size in different developmental conditions. Drosophila (Insects). M. C. CASTIGLIONI

E. Phanotvpische Geschlechtsbestimmung. Limnaea 1.17. (Gastr.). H. NOESCH 11.17.

E. Nahreidetermination bei stenoglossen Prosobranchier~ Illb. lc. Arten. H. STOIGER

M. Study of intra-uterine influences upon embryonic Ilia. 19. growth, differentiation, and organogenesis by means of ova and ovary transplants between races known to differ genetically in adult body size as determined by the general size factors and also by genetic factors affecting specific regions of the axial skeleton. Oryctolague cuniculus.

F. AVIS, D. DIETZ and P. B. SAWIN

2. General genetical studies (heteroploidy, hybridization, chimae~ ras, etc.).

General subjects. D. Influence of maternal environment and cytoplasm on Illb. 17. development of Drosophila; repeated transplantation of embryonic gonads between species. Drosophila buzzati and D. arizonensis (Insecta). M. FISCHBERG

D. Developmental study of lines selected for large and small body size in Drosophila melanogaster (Insecta).

E. C. R. REEVE and F. W. ROBERTSON Morphological and experimental investigation of coiling Ilia. lc. in Limnea pevegra. F. M. HISLOP

E. Cytologic und Cytogenetik der Prosobranchier. 1. 2a.

H. STOIGER H. The development of Ascidian hybrids.

A. MINGANTI

L. The development and inheritance of abnormalities of Hid. 4.

the aortic arches of the chick and their relation to hatching. Gallus domesticus. M. D. FROUD



Ilk. 2. 159 IIIc. 2.

L. Hypoglycemia following injection of insulin into chick embryos of 30 hours of incubation; relation to rumplessness. Gallus domesticus. E. ZWILLING

L. Sulfanilamide and its micromelia-inducing effects in chick embryos; enhancement of the effects by paraaminobenzoic acid and antagonism of nicotinamide. Gallus domesticus. E. ZWILLING

M. Experimental production of genetic and developmental Ilia. 2a. variations in genetically stable material by treatment of Illb. 2a. gonads, germ cells and embryos. Mus musculus.

M. N. RUNNER

M. Developmental genetics of the mouse skeleton (mutants Hid. 3.

genes and natural polymorphism of wild populations). Mus musculus. H. GRUNEBERG

M. Development and morphology of hair and skin mutants, I. 8.

particularly the mimic hair-waving genes. Mus musculus. D. S. FALCONER and A. S. FRASER

M. Development of tail structure in normal, Brachyury Ilia. 2b. Kinky and fused mice. Mus musculus. E. CASPARI Heteroploidy.

J. Research in the general field of heteroploidy. This Illb. 4.

includes surveys of frequency of polyploidy and haploidy in natural populations of salamander larvae; induction of heteroploidy by cold and heat; effects of chemicals, etc., in production of abnormalities of mitosis as the basis for induction of heteroploidy. Effect of phenylthiourea on mitosis. Amblystoma punctatum.

D. P. COSTELLO and Miss C. HENLEY

J. Study of effects of triploidy on development of gonads. Ilia. 17. Triturus viridescens. G. FANKHAUSER Illb. 17.

J. Study of progeny of triploid, tetraploid and other hete- Illb. 4.

roploid individuals among axolotls, Amblystoma mexicanum. G. FANKHAUSER and R. R. HUMPHREY

J. Cytological study of polyploidizing effect of heat and Illb. 2a. d. cold on fertilized eggs, and of parthenogenetic cleavage induced by heat and cold treatment of unfertilized eggs. Triturus viridescens. G. FANKHAUSER

J. Experimental heteroploidy and parthenogenesis in Ilia. 4.

newts. Heteroploid newt hybrids — developmental po- Illb. 4.

tentialities and expression of species characters, sex Hid. 2.

determination. Triton alpestris and T. palmatus.

M. FISCHBERG

J. Chromosomal mosaicism and abnormalities of mitosis produced by experimental temperature shock on the developing embryos of the California salamander, Triturus torosus. C. HENLEY

J. The offspring of polyploids; their chromosome number, II Id. 2.

mortality, pathology, etc. Amblystoma (Siredon) mexicanum. R. R. HUMPHREY

J. Studies on spontaneous haploidy and polyploidy. Am- Hid. 2. blystoma (Siredon) mexicanum. R. R. HUMPHREY



Ilk. 2. 160 IIIc.3.

M. Heteroploidy in mammals. Spontaneous heteroploidy — Ilia. 4.

analysis of factors involved. Induced heteroploidy — Illb. 4. methods of production. Viability of polyploid embryos. Hid. 1. Physiological embryology of polyploid embryos. Mus musculus. R. A. BEATTY and M. FISCHBERG

Hybridization.

T Hybridization in Tritucus alpestris and taeniatus.

J. MOLL

J. Parabiosis between pure breed and hybrids Urodela. Ilia. lb. Tritums sps. A. PISANO'

L. Intergeneric crosses in birds by means of artificial insemination. Gennaeus nycthemerus and Gallus domesticus. J. H. MARCHLEWSKI

Merogony.

J. Merogony-experiments. Triton sp. E. H ADORN

3. Analysis of influence of special genes and mutants in development (incl. lethal factors).

D. Developmental efforts of some genes in Drosophila melanogaster (Insecta). C. H. WADDINGTON

D. Developmental physiology and genetics of the lozenge alleles in Drosophila melanogaster. G. ANDERS

D. Development of eye pigmentation in wild type, aa and Ilia. 10. wa wa Ephestia kuhniella (Lepidoptera).

E. CASPARI

D. Relations of genes in the development of eye colour in Ilia. 10. Drosophila melanogaster. CI. W. CLANCY

D. Development of a new peiotropic mutant "bordosterile" in Drosophila melanogaster and the comparative embryology of normal and "bordo-sterile" eggs.

G. FABIAN

D. Development of semilethals in Drosophila melanogaster.

Frl. M. VOGT

D. Developmental physiology and genetics of a lethal Illb. 2a. mutant character in Drosophila melanogaster (lethaltranslucida). F. H. SOBELS

D. Developmental analysis of lethal factors Drosophila sp. Hid. 2.

E. HADORN

D. Development of a lethal character in Drosophila melanogaster (Insecta). H. GLOOR

D. Entwicklung der Schuppen von Lepidopteren bei verschiedenen Mutanten und unter experimentellen Bedingungen. Ephestia (Ptychopoda). A. KOHN.

E. Recherches genetiques des races euphalliques et aphalliques chez Bulinus truncatus (contortus) (Gastropodes Pulmones). M. de LARAMBERGUE

J. Gene action controlling development of pigmentation in white and dark strains of Mexican axolotl. Siredon mexicanum. H. C. DALTON



Ilk. 3. 161

L. Developmental studies on various mutants of fowl, such Illb. 2a.

as "duplicate", "creeper chondrodystrophy", etc. Gallus Hid. 3.

domesticus. W. LANDAUER

L. The role of epithelial components in the developmental

origin of the "wingless" syndrome of chick embryos.

Gallus domesticus. E. ZWILLING

M Study of anophthalmia and microphthalmia. Mus mus- I. 10.

cuius. H. B. CHASE Ilia. 10.

M. Investigations on the development of several asymmetrical mutations involving the tail and the eye in

Peromyscus, the deer mouse. R. R. HUESTIS

M. The developmental effect of the "pallid" gene on the I.

inner ear of mice. Mus musculus. M. F. LYON

M. Developmental study of a new tibial hemimelia mutant I. 11.

in mice. Mus musculus. T. C. CARTER

M. Study of two unrelated genetic types of achondroplasia II. 11.

in the rabbit, (1 ) the type originating at the Rockefeller Ilia. 11.

Institute and (2) a new type discovered in California.

Oryctolague cuniculus. P. B. SAWIN

M. Developmental study of a new fifth-toe Polydactyly 1. 2b.

character in mice. Mus musculus. R. J. S. PHILLIPS M. Study of skin and its derivatives with emphasis on hair IV. 4.

development and pigment distribution. Mus musculus.

H. B. CHASE M. Development and morphology of a new mutant (crink- 1.8.

led) that affects hair and skin. Mus musculus.

D. S. FALCONER and A. S. FRASER M. Description of gonad and especially germ-cell differen- I. 17.

tiation in normal and abnormal embryos. Embryos which Ilia. 17.

carry WW, WW, and W V W V genes have abnormal Hid. 3.

gonads. Mus musculus. E. S. RUSSEL

M. Erythrocyte count of normal and abnormal embryos I. 15.

from 12 — 18 days. Abnormal embryos carry dominant III. 15.

qenes WW, WW V , W V W. Mus musculus. Hid. 3.

E. S. RUSSEL M. Comparison of blood formation in yolksac, transfer to I. 15.

liver, formation in liver, and transfer to bone-marrow in Ilia. 15.

normal embryos and those with severe macrocytic Hid. 3.

anemia due to W,W V genes. Mus musculus.

E. S. RUSSEL



Hid. 1. 162 IIId2 Hid. Experimental embryology Development and pathology.

1. Theoretical problems and general questions.

2. General investigations on pathological development.

General subjects.

T Neoplastic development of overripe frog eggs.

E. WITSCHI V Factors affectinq mitosis. Amphibians and Birds. Ilia. 19.

R. J. O'CONNOR Illb. 19. L. Incubation of chick eggs under modified atmospheric Ilia. 2a. d.

conditions. Gallus. J- GALLERA

M Splenectomy and the embryonic life. Albino rats. Ilia. 16.

I. ToRO Illb. 16. M. Some anomalies found in a series of 180 fetal dogs.

H. B. LATIMER M. Systematic investigation of current cases of prenatal disease and malformation in autopsy material. (Part of "Brooklyn Survey of Neonatal Pathology"). Homo.

P. GRUENWALD

Relations between host and graft.

V. Studies on antagonism between host and transplanted Ilia. 17. tissues. Survival of transplanted ovaries in rats (autogenous, sibling, intrastrain, homogenous and heterogenous). Rattus norvegicus (Mammalia) and Hyla regilla (Amphibia). R. M. EAKIN and M. HARRIS

J. Studies on antagonism between host and transplanted Ilia. 18. tissues. Survival of transplanted pituitaries in amphibia (homoplastic and xenoplastic). Hyla regilla.

R. M. EAKIN and M. HARRIS

M. Studies on the form and function of ovaries which have Ilia. 17. been grafted into spleens of castrates and subsequently Illb. 17. retransplanted into normal position within the ovarian IIIc. 2.

capsule of a normal mouse. Offspring of these ovaries are examined for abnormalities which may be correlated with the time the graft remained in the spleen. Mus musculus. Miss K. P. HUMMEL and C. C. LITTLE Pathological influences of chemicals.

J. Effects of carcinogens on successive developmental Ilia. 2a. e. stages of amphibian embryos. J. K. F. HOLTFRETER

L. Embryonic development of selenium-induced malfor- Ilia. 2a. e. mations. Chick. P. GRUENWALD

M. The production of hemopoietic and other anomalies in Illb. 2a. e. rat embryos by nitrogen mustards. Mus norvegicus.

G. G. ROBERTSON

M. The production of hemopoietic and other anomalies in Illb. 2a. e. rat embryos by nitrogen mustards. Mus norvegicus.

R. A. HETTIG

M. Effects of sulfa drugs on mammalian embryo. Mus musculus. C. L. YNTEMA



ma. 2. 163 nid. 3.

M. Effects of sulfa drugs on mammalian embryo. Mus musculus. W. S. HAMMOND

Teratology.

J. Erzeugung von Teratomen bei Xenopus. G. ANDRES

J. Teratologie. Rana fusca. R. STOLL Ilia. 2a.

L. Teratologie. Poulet. R. STOLL Ilia. 2a.

L. A causal analysis of teratogenic action of insulin on Illb. 2a. f. developing chicken embryos. Gallus domesticus.

W. LANDAUER

L. Production de malformations teratologiques sur Tembryon de poulet, par Taction de l'adrenaline et de la pilocarpine. V. PREDA

L. Production de malformations teratologiques sur Ternbryon de poulet, par Taction de Textrait gastrulaire de Rana. V. PREDA

M. Embryological study of pregnancies terminated because I. 2a.

of genetic or maternal factors threatening the fetus, e.g. rubella, mongolism. Homo sapiens.

G. W. CORNER

M. Influence avitaminose maternelle chez la rare; avita- Ilia. 2a. f. minose B2, biotine, pantothenique, folique. Illb. 2a. f.

Jeanne BOISSELOT et A. GIROUD

M. Postnatal histogenesis of the lymphatic system under Ilia. 16. normal conditions and under the influence of experimental infections. Guinea pig. L. J. W. GYLLENSTEN

M. Influence teratogene des intoxications maternelles. Femme et Rat.

P. DESCLAUX, A. GIROUD et C. MORLON

M. Recherches sur Tinfluence teratogene des infections. Rat. A. GIROUD, P. GIROUD et M. MARTINET

M. Etude des cas teratologiques individuels y compris les teratomes (cyclopie). Homme.

H. CHATTERJEE, A. LELIeVRE et A. GIROUD

M. Segmental pattern and innervation of dermatomes. 1. 8.

Homo. F. D. GARRETT

Development of special malformations.

M. Systematische Untersuchungen typischer menschlicher Ilia. lc. Missbildungen unter Bezugnahme auf die Ergebnisse IIId.4.

entwicklungsphysiologischer Forschung. Gegenwartig werden Kopfmissbildungen und sireniforme Missbildungen analysiert. G. T5NDURY M. Untersuchungen iiber die Entwicklung des menschlichen I. 2b. Gesichts und ihre Beziehungen zur Entstehung der Ilia. 2b. Hasenscharte und anderer Spaltbildungen.

G. TONDURY M. Development of postotic axial anomalies. Homo sapiens.

E. C. SENSENIG M. Studies on the prenatal influences which produce con- Ilia. 2a. genital abnormalities in inbred mice. Mus musculus. Illb. 2a.

M. N. RUNNER IIIc. 2.



Hid. 4. 164 Hid. 5.

4. Pathological development of special organs.

f Ueber die Entwicklung von Missbildungen der Wirbelsaule. Triton. K. THEILER

L. Les anomalies du systeme vasculaire. (coeur et systeme vasculaire embryonnaire et extra-embryonnaire). Gallus domesticus. F. STEPHAN

M. Anatomical findings in congenital anomaly of the heart I. 15.

and great vessels together with discussion of the more interesting features involved. Homo. C. A. NEWHALL M Investigations on congenital heart-malformations. Homo. Ilia. 15. J. DANKMEYER, H. A. SNELLEN and H. W. v. d. WEL M. A study of abnormal hearts in pig embryos correspon- Ilia. 15. ding to the third month of human development.

R. F. SHANER M. Modifications du developpement de l'encephale sous Ilia. 9. f. Taction des antithyroidiens. Rat.

Mile J. TEYSSEYRE

M. Ueber die Entwicklung von Missbildungen der Wirbel saule. Mensch. K. THEILER

M. Ueber die Entstehung von Blockwirbeln beim Men schen. K. THEILER

M. Respiratory malformations (Anomalies): Causes, cli- Ilia. 14.

nical and pathological significance. Homo sapiens. Illb. 14.

H. JORDAN

M. An embryological study of tracheo-oesophageal fistula. I. 13.

Homo. F. Th. LEWIS 1. 14.

M. Study of the human inguinal canal, with special refe- I. 16.

rence to its developmental anomalies. Homo. I. 1 7.

S. B. CHANDLER

5. Tumours.

C. Geschwulstproblem bei Oligochaeten. Lumbricus (Cli- IV. 1.

tellata). A. PENNERS

C. Geschwulstproblem, bearbeitet durch Regeneration und IV. 2.

Transplantation an Lumbricus (Annelida). H. HUBL

J. Effects of egg extracts on tumours induced by 1,2 benzopirene in Anura. Miss Gabriella ALOISI

J. Resemblances between atypical regenerative and em- IV. 2.

bryonic growth and malignant tumours. Amphibians.

C. B. GOODHART

M. Development of tumours in rats. C. BARIGOZZI

M. Biochemical and cytochemical properties of rapidly Illb. 19. growing tissue — normal (i.e., controlled) and autonomous growth (tumours). Rat. A. B. NOVIKOFF

M. Experimental studies of carcinogenic agents passing the Illb. 3.

placenta in mice. Preliminary paper published. Morphological effects both immediate and remote. Metabolism of the compounds to determine the mechanisms.

J. G. SINCLAIR



IV. 1. 165 IV. 2/3.

IV. Regeneration.

1. Theoretical problems and general questions.

EV. + V. Regeneration problems. Invertebrates and Vertebrates. R. W. REYER B. Experiments on the gradient-concept. Hydroidea.

H. A. L. TRAMPUSCH

2. General investigations on regeneration (including total regeneration. IV. 3).

EV. Regeneration. Invertebrates. C. OVERGAARD

Differentiation of cilia in Ciliata (Protozoa). Regeneration. P. B. WEISZ

B. Compensatory regulation in the Serpulid Hydroides.

M. ABELOOS

B. An investigation of the organising action of the oral cone in the regeneration of the hydroid Cordylophora lacustris. J. SINGER

C. Regeneration in marine Planarians. M. ABELOOS C. Regeneration. Triclads (?). H. V. BR0NDSTED C. Migration des cellules de regeneration chez les Planaires

dulcicoles. Euplanaria lugubris (Plathelminth.es).

Mile. F. DUBOIS C. Regeneration in marine Annelids. M. ABELOOS

C. Regeneration in Polychaeta. E. VANNINI

C. Regenerationsversuche an verschieden alten Tubifex

rivulorum (Annelida). H. SCHMIRLER

C. Regeneration auf verschiedenen Altersstadien von Tubifex rivulorum (Clitellata). A. PENNERS

D. Regeneration in Sphaeroma (Crustacea).

M. ABELOOS

D. Wundheilung und Regeneration bei Ephestia (Ptycho poda), (Lepidoptera). A. KOHN

J. Origine des cellules de regeneration chez les Batraciens.

Potentialites de ces cellules. Triton. Mile M. SCHUE

J. A study of the mechanics of the formation of the regene- IV. 4.

ration blastema. The influence of nerves on blastema

formation. Regression in nerveless non-regenerating

limbs. Amblystoma punctatum and Ambl. opacum.

E. G. BUTLER J. Etude des potentialites des territoires de regeneration Ilia. 2b. par la deviation des nerfs et par les transplantations; mecanisme de la duplicature. Triton cristatus.

E. GUYENOT J. Biochemistry of regeneration in Urodeles with special consideration of the activity of some enzymes during the determination of the blastema. Triturus cristatus.

F. S. GHIRETTI



IV. 2/3. 166 IV5,

I, Regeneration in Amphibians. The influence of inanition on that phenomenon.

S. HILLER, T. KROTKIEWICZ

and E. H. WISKONT

1 Effect of certain carcinogens on regeneration. Amphi bians. M. W. JOHNSON

4. Partial regeneration (of special parts of the organism) (tail, limbs, skin, etc.).

Tail-regeneration.

J. Experimental studies on the regeneration of the tail of the tadpole of Rana clamitans. D. J. McCALLION (work completed. May '47 and published in Can. Jour. Research, vol. 26. pp. 62—65; 82—92, 1948)

J. Schwanzregeneration von Xenopus, normal und chemisch beeinflusst.

F. E. LEHMANN und diverse Mitarbeiter

K. Regeneration de la queue des Reptiles.

G. M. BRUNETTI Limb-regeneration.

J. Regeneration der Extremitat. Triton. E. ROTMANN

J. Blastema formation and regeneration in urodele limbs in which proximo-distal polarity has been reversed. Amblystoma punctatum and Ambl. opacum.

E. G. BUTLER

J. Influence of nerves on regeneration of urodele limb. Triturus viridescens. M. SINGER

J. Histology of limb and nerve regeneration in urodele. IV. 5.

Triturus viridescens. M. SINGER

J. Regeneration of aneural limbs. Amblystoma punctatum. Ilia. 2b.

C. L. YNTEMA

J. Effect of ultrasonic vibrations on molting response in 111b. 17. d. the newt, on regeneration of the limbs of the newt, and on gonads. Triturus viridescens. H. CLARK

J. L'effet de Taction de certains mineraux (uraninite, tourmaline, galene, blende, chalcopyrite) sur la regeneration des membres du Triton vulgaire. V. PREDA

J. Action du cholesterol (sous forme de solution 4 % en acides biliaires et sous la forme de solution huileuse 4 c /c de palmitate de cholesterol) sur la regeneration des membres du Triton vulgaire. V. PREDA

J. Action de la greffe de cancer sur la regeneration des membres du Triton vulgaire. V. PREDA

5. Regeneration of special organs (lens, etc.).

Regeneration of nervous system.

V. Regeneration and development of the central nervous 1. 9.

system. Vertebrates. J. BOEKE Ilia. 9.



IV. 5. 167 IV. 5.

V Regenerations of nervous tissue. Reptiles and Amphi- II. 9.

bians. A. STEFANELLI Ilia. 9.

L. Regeneration of the central nervous system in the chick embryo. E. van CAMPENHOUT

M. Studies of regeneration and degeneration of brain Ilia. 9.

material after extirpation of parts of the forebrain (in particular of diencephalon) in early development (14 — 21 days of pregnancy) of rat fetus. Mus norvegicus albus (Rodentia). ]• AUER

M. Regeneration in mammalian central nervous system. (Recovery of neurons following trauma, alteration in their internal environment). Car and dog.

J. C. LIU, W. F. WINDLE and several coworkers

M. Regenerative capacity of the central nervous system. Replacement of central pathways by degenerated peripheric nerves. Albino rat. J. SZENTAGOTHAI Regeneration of spinal cord.

V. Regeneration of peripheric-nerves and of the spinal cord in Fishes and other Vertebrates. S. LEGHISSA

K. Regeneration of spinal medulla. Reptilia. G. BAFFONI K Reqenerative processes of the spinal medulla. Reptiles.

G. THERMES M Studies on regeneration of mammalian spinal cord. Ilia. 9.

W. W. CHAMBERS Nerve-regeneration. V. Study of the influence of peripheral "load" on the diameter of nerve fibers. Vertebrates. M. V. EDDS Jr V. Study of factors influencing the spreading of intact axons in partially denervated muscles. Verfe^rafes.

M. V. EDDS Jr

J Effects of anti-mitotics on the regeneration of peripheral

nerves. Amphibians. S. LEGHISSA and P. PASQUINI

M. Reinnervation of peripheric nerve stumps after direct Ilia. 9.

implantation into the central nervous system. Albino rat.

C. RAJKOVITS M. Regenerative capacity of peripheric ganglion grafts. Reinnervation of degenerated motor end-plates by processes of qrafted peripheric ganglion cells. Albino rat.

J. SZENTAGOTHAI M.(?) Developpement des synapses dans les centres nerveux. Ilia. 9.

Leur degenerescence et leur regeneration. Mammaliaf?)

A. WEBER Regeneration of optic nerve and eye. C. Regeneration des yeux chez Planaires. Th. LENDER

J. Complete analysis of the ocular mechanisms in Ambly- Ilia. 10. stoma studying the regeneration of the lens and regulation of the nervous mechanisms after ocular transposition. L. S. STONE

M. Regenerative capacity of the optic nerve. Albino rat.

A. G6M6RY



IV. 5.



168 IV. 5.



Lens -regeneration. J. The role of the autonomous nervous system in the

regeneration of the lens. Triton. Z. POSALAKY

J. The role of the autonomous nervous system in the

regeneration of the lens. Triton. T. BARKA

HV Lensreqeneration. Birds and Mammals.

M. W. WOERDEMAN

Bone-reqcneration.

J. Bone-regeneration. B. SCHREIBER Ilia. 11.

M. Experimental and clinical new-formation of articulations. Ilia. 11. Embryology, regeneration, new- formation. Causal and functional analysis; biological synthesis gained by the effect of directed regenerative potency. Man, dog and ra bbit. S. KROMPECHER

Muscle -regeneration.

T. Reqeneration of skeletal muscle in tadpoles, Amblustoma. R. ALTSCHUL

M. Reqeneration of skeletal muscle in mammals.

R. ALTSCHUL

Liver-regeneration.

V. A study of mitotic activity and other cytological phenomena in liver regeneration. Vertebrates.

Miss E. H. LEDUC

V. A study of mitotic activity and othher cytological pheno- Ilia. 13. mena in liver regeneration. Verte6rares.

J. W. WILSON

M. A study of liver regeneration in tissue culture. Rattus notvegicus. M. ABERCROMBIE

Gonad-regeneration.

M. Regeneration of the ovary of mammals. Mus rattus. Ilia. 17. Lepus cuniculus. Erethizon dorsatus and probably others. H. W. MOSSMAN



V. 1. 169 V. 4.

Metamorphosis.

Theoretical problems and general questions.

D. Kernwachstum in verschiedenen Geweben wahrend der Metamorphose bei Ephestia kiiniella (Ptychopoda seviata), (Lepidopteren). H. RISLER

2. General investigations on metamorphosis.

General subjects. D. Metamorphose der Insekten. H. PIEPHO

J. Control of metamorphosis. Amphibians. E. PADOA

J. Ricerche sulla catalasi durante la metamorfosi. Anfibi. Nib. 2a. c.

Mrs L. URBANI— MISTRUZZI J. Effects of antimitotics on metamorphosis of Amphibians.

S. LEGHISSA

Hormones and metamorphosis,

V. The influence of hormones on metamorphosis. Verrefcrafes. A. BER and A. ORLOWSKI

V. Analyse der einzelnen unter dem Einfluss des Schilddrusenhormons erfolgenden Differenzierungs- bzw. Reductionsvorgange. Vertebraten. H. HARTWIG

}. Thyroid gland in delayed metamorphosis of Xenopus larvae. H. SUOMALAINEN and S. TOIVONEN

J. fitude de Taction des antithyroidiens (thiouracil etc.) Ilia. 17. f. au de la vie larvaire et de la metamorphose des Batraciens. Discoglossus pictus. M. DELSOL

3. Investigations of whole process o[ metamorphosis.

D. Metamorphosis of the Cape Crawfish. Jasus lalandii (Crustacea). C. von BONDE

D. Metamorphosis of Tropinota hirta (Coleoptera).

W. KLOFT D. Metamorphoses. Insectes aquatiques. G. MARLIER

4. Metamorphosis o[ special organs.

D. Metamorphoseveranderungen der Epidermis und in- 1. 8.

kretorischer Organe bei Panorpa (Insekta). 1.18.

Frl. E. SCHWINCK

J. Metamorphosis of the amphibian ear. E. WITSCHI

}. Metamorphosis of the jaws and their muscles cor- I. 11.

related with the changes in the animals feeding habits. I. 12.

Bufo regularis. S. N. SEDRA

}. An X-ray study of bone development in Rana clamitans

during metamorphosis. Miss I. L. ANDERSON



170

Short Notes and References to new Technical Methods )

Some data concerning the cultivation of young and adult Amphibians, P. D. Nieuwkoop. Hubrecht Laboratory, Utrecht.

The Triturus species taeniatus, cristatus and alpesttis are our most suitable amphibians for experimental work. The adult animals are only available during spring-time. We kept them, however, with success during summer-, autumn- and winter-time in rather flat aquaria made of a mixture of cement and gravel, in a layer of water of 10 — 15 cm. In these closed aquaria an island of stones and tussocks of moss was built. A series of these aquaria formed a current-water system. The current water keeps the temperature at a rather constant level and avoids pollution. The animals can be fed on land or in the water. They become so accustomed to a regular feeding that they will take also dead food like strips of liver and meat, which is a great advantage during winter-time when living food (worms) is scarce. We already got indications that a rise in light, food and temperature can provoke normal breeding reactions. Probably the light plays the most important role. A complete winter-rest seems not to be necessary for a new breeding period. The breeding season can be anticipated for two or three months when optimal conditions are introduced already in winter-time, which fact enable us to extend considerably the period for experimental work.

We have similar current water systems in use for foreign amphibian species. They are also very practical for subtropical forms as Xenopus laevis, which are cultivated in deeper (25 — 30 cm) wooden aquaria clothed with zinc, at a temperature of ± 25° C. Pollution of these aquaria is strongly reduced by the current water.

Several species, which in captivity, as a rule, only breed after artificial stimulation with hormones, can probably also be stimulated by a temperature shock, but only in case the animals are kept under really good and natural conditions. This holds e.g. for Pleurodeles and Amblystoma, Discoglossus and perhaps also Xenopus.

Young amphibian larvae are reared with succes in round glass aquaria filled with a rather thick layer of mud and a thin layer of water, and in which water plants guarantee a good oxygen supply. In such wellbalanced aquaria the larvae can get a supplementary feeding with Tubifex, Enchytraeus and small worms.

One should, in general, pay more attention to the ecological conditions under which foreign and native species are living in their natural habitat in order to get really good results.

General Questions and Announcements '.

CENTRAL EMBRYOLOGICAL LIBRARY.

In the general circular of the Hubrecht Laboratory in 1948, we mentioned

) 2 ) We ask every embryologist to send us communications for these chapters. The
data mentioned here in thia first issue deal casually with the work of the Hubrecht Laboratory only. They only serve as general examples.



171

the project of a Central Embryological Library, which will be ar the disposal of every embryologist over the whole world.

The collection of this central library will consist in the first place of a complete collection of reprints of embryological work, and in the second place of a collection of special handbooks and embryological periodicals 1 ).

The significance of such a central library will become clear when we give a short survey of its general modes of use.

a. Every embryologist can ask for information about literature on special subjects or of certain authors, about newly published literature, etc., etc.

b. Every embryologist can ask for special papers which are not available in his own country. The Hubrecht Laboratory will lend them — under certain general conditions — to every embryologist.

c. Every embryologist can personally consult the Library of the Hubrecht Laboratory at all times.

d. The central library will be at the disposal of every embryologist, who is carrying out scientific work at the Hubrecht Laboratory.

Since a part of this central collection will be regularly lent out, a single collection cannot fulfil all requirements. For providing information about literature and for the scientific work of the staff of the Hubrecht Laboratory and of visiting embryologists we need a collection which is complete and which is at their disposal at all times. We therefore ask every embryologist to send us two copies of his reprints, one under the name of the "Central Embryological Library of the Hubrecht Laboratory" and one under the name of Dr P. D. Nieuwkoop, whose collection will form the special collection for internal use.

As you will understand, however, there is one general condition for the success of our enterprise, viz., the collaboration of every embryologist, a collaboration in the form of a regular sending of all publications dealing with embryology in its widest sense.

First, however, we must supplement our present collection of older literature, as there are several gaps in it. The Hubrecht Laboratory, having been a descriptive embryological institute only up till 1947, possesses a rather complete collection of the older descriptive and comparative literature, but lacks the more recent descriptive and expert mental literature for the greater part.

We originally intended to send every embryologist a list of his own publications present in our library in order to facilitate a supply. The extent of the administrative work at the Hubrecht Laboratory does not allow such an enormous work at this moment, nor, probably, in the near future. Moreover, several authors are not yet represented at all in our collection. It seems, therefore, better to ask every embryologist to send us his older publications, and, if possible, also all duplicates of embryological papers which are of little or no use to his own institute. Private collections, which cease to be used, and which may otherwise get lost, can be of a very great value for completion of this Central Library.

) These handbooks and periodicals are only intended for providing information
about literature (a) and for internal use in the Institute (d.).



172 A NORMAL TABLE OF XENOPUS LAEVIS.

The anuran species Xenopus laevis, which has already been introduced into several Institutes for pregnancy tests, appears to be very suitable for experimental embryological work. At a number of institutes experimental work has already been started, but it has met one great impediment up till now, viz., a general deficiency of our knowledge of normal development. We will, therefore, try to solve this problem by the composition of a Normal Table of this very interesting anuran species. This project was already started at the beginning of 1948. The elaboration of a complete normal table from the beginning of development up to the end of metamorphosis is, however, an enormous project. We, therefore, asked a number of embryologists already working with this species to cooperate.

As the Hubrecht Laboratory tries to stimulate international cooperation, and a project like this one appeared to be very suitable for elaboration by a group of embryologists working at different institutes, we chose the form of international team-work. The general interest in our enterprise allowed us to found an international team of more than 20 collaborators, spread over 8 countries on three continents.

At the present moment the material for this extensive project has been collected in South Africa, the native country of Xenopus laevis, and will be distributed among the collaborators in the early part of 1950. We hope that the elaboration of this material can be carried out in the course of 1950, so that we can publish the Normal Table in 1951.

Communication of the ,,Institut International

d'EmbryoIogie" (Embryological Section of the I.U.B.S.)

A meeting of the I. I.E. was held in the Zoological Laboratory of the university of Berne, Switzerland on September 10th — 11th, 1949. It was preceded by a Symposium on September 6th — 9th, organised by Prof. F. E. Lehmann under the auspices of the I. I.E. and with the financial aid of the I.U.B.S. and the Cantonal Direction of Education of Berne.

The theme of the symposium was: Organised field actions (induction and competence) and cellular genetic factors in embryonic development.

The program comprised the following papers: I. The experimental data.

A. Neural induction.

1. A. M. Dalcq, Bruxelles: La genese du complexe inducteur chez les chordes.

2. P. D. Nieuwkoop, Utrecht: Neural competence and neural fields.

3. S. Toivonen, Helsinki: Stoffliche Induktoren.

4. J. Brachet, Bruxelles: Characteristiques biochimiques de la competence et de l'induction.

5. Tr. Gustafson, Stockholm: Survey of the morphogenetic action of the lithium ion and the chemical basis of its action.



173

B. Developmental physiology of regions of different genetic constitution.

1. F. Baltzer, Bern: Chimaren und Merogonen bei Amphibien.

2. E. Hadorn, Zurich: Das Verhalten von transplantierten Drosophilablastemen aus genetisch-lethalen Spcndern im normalen Wirt.

3. H. Griineberg, London: Developmental Genetics in Rodents.

II. Synthesis of results.

A. F. E. Lehmann, Bern: Das Problem plasmatischer Gestaltungsfaktoren.

B. C. H. Waddington, Edinburgh: Das Problem chromosomaler Gestaltungsfaktoren.

The introductory papers gave rise to animated discussion. A report of the symposium will be published elsewhere.

In the morning of Saturday, September 10th, 1949, a private meeting of the I. I.E. was held. It was attended by 18 members from 9 countries. A new Executive Committee was elected, consisting of M. W. Woerdeman, president; G. R. de Beer, E. Faure Fremiet, P. Weiss, vicepresidents; A. Dalcq, F. E. Lehmann; Chr. P. Raven, secretary-treasurer; It was decided that the next meeting will be held in the late summer of 1951 in the Hubrecht Laboratory at Utrecht, Netherlands. It will be preceded by a symposium, the theme of which will be chosen by the Committee. Guests will be admitted to the scientific meetings of the I. I.E.; they may read a paper if invited by the Committee.

In the afternoon of September 10th and the morning of September 11th, scientific meetings were held.

The following papers were delivered:

H. V. Br0nsted, Kobenhavn: The "time-factor" in the activity of the field.

E. Hadorn, Zurich: Expecimentell bewirkte Blockierung des Dotterabbaues in der Chorda von Triton.

Wird aus einer embryonalen Chorda im vorderen Rumpfbereich zur Zeit, da sie noch nicht vakuolisiert ist, ein Stuck exstirpiert, dann unterbleibt in jenen Regionen, die an die Liicke grenzen, der Dotterabbau und die Vakuolisierung. In der Region des ,,Dotterblockes" finden sich nach 2 — 3 Wochen zahlreiche pyknotische Kerne. Die Langenausdehnung des Dotterblockes ist umso grosser, je grosser die Liicke zwischen den beiden Chorda-Enden ist. Das grosse, caudal der Liicke stehende Chordastiick zeigt einen ausgedehnteren Dotterblock als das kleinere craniale Chordastiick. Zwischen der Zone des Dotterblocks und den normal differenzierten Chordaregionen findet sich eine Zone mit zahlreichen Mitosen.

Wird das exstirpierte Chordastiick in den entodermalen Bereich des Kopf- oder Rumpfdarmes transferiert oder als Inhalt eines ektodermalen Sandwich-Explantates aufgezogen, so verschwindet der Dotter in normaler Weise. Es werden dann auch jene Regionen vollig vakuolisiert, die an den Schnittrand grenzen. Es ist anzunehmen, dass die Blockierung



174

des Dotterabbaues in den ..in situ" stehenden Chordastiimpfen durch Faktoren bewirkt wird. die nicht im Chordamaterial selbst liegen. Die Fraqe steht zur Diskussion. ob hier ein Zusammenhang besteht zwischen der Regenerationsaktivitat der Chorda-Teilstiicke und der Differenzierungshemmung in den an die Liicke grenzenden Zonen.

A. Dalcq. Bruxelles: Le developpement de I'oeuf du Rat, de /'oocyte

jusqu'a la ligne primitive (avec demonstration).

Expose et demonstration (20 preparations et nombreux dessins) des

resultats obtenus par l'etude de la basophilic cytoplasmique chez le rat

et accessoirement quelques autres Mammiferes.

Ces donnees sont publiees dans une note preliminaire (D. et Seaton Jones. C. R. CI. des So, Ac. Rle Belgique, 5e S, 35, p. 500 a 511).

Le memoire in extenso (A. Seaton-Jones) paraitra prochainement dans

les Archives de Biologie.

L'auteur annonce en outre que l'examen d'un premier ovaire humain lui

a permis d'observer dans quelques oocytes la zone corticale ribonucleique

caracteristique.

A. Weber, Geneve: Utilite pour les recherches embryologiques experimentales dune technique permettant d'observer la di[[erenciation des neuvoblastes, aux stades les plus precoces des larves d'Amphibiens (avec demonstration).

Notre technique donnant la possibility d'observer d'une maniere constante l'apparition des neurofibrils dans des neuroblastes encore bourres de plaquettes vitellines, il est ainsi permis d'aborder le determinisme de ces differenciations. Elles restent possibles dans des elements detaches experimentalement des parois du tube nerveux et flottant a l'interieur de son canal central; dans ces conditions, la polarite et l'orientation normale de ces neurones primitifs sont conservees, comme s'ils etaient restes a leur place. Leurs fibres etant sollicitees aussi bien par des tropismes que par la pesanteur, il serait possible d'evaluer ces forces, d'apres la deviation de ces prolongements a travers le liquide cerebro-spinal. La meme technique permet d'aborder la question si controversee de Faction precoce des territoires peripheriques sur les regions correspondantes des centres nerveux, ou bien aussi, celle de la nature et de la specificite des neurotropismes. On sait que les bourgeons des membres constituent un centre attractif particulierement actif et non specifique, car dans certains cas ils appellent a eux des nerfs craniens, comme le vague. Par contre lorsque les tropismes sont faibles, les fibres nerveuses efferentes se dirigent uniquement vers les myoblastes. dont le myotome correspond a leur segment medullaire. Ce fait parait expliquer pourquoi il n'a jamais ete possible de realiser de veritables synapses dans les cultures combinees de tissus embryonnaires in vitro; il faudrait prendre la precaution de placer dans le coagulum. pres du fragment de tube nerveux, le myotome que les fibres medullaires efferentes doivent normalement innerver.

S. Toivonen. Helsinki: Uber die Induktion der selbstandigen Linsen (mit Demonstration).

Der Vortrager zeigte mikroskopische Praparate mit in den Triton-Keimen von den heterogenen Induktoren hervorgerufenen selbstandigen Linsen. Die Entstehung der ubergrossen selbstandigen Linsen, die weit von



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der eigentlichen Linsenregion induziert worden waren, mochte er nach der Qualitativhypothese so erklaren. dass dies eine Leistung von einem besonderen leistungsspezifischen Induktionsstoff ware, der in einigen abnormen Induktoren reichlicher vorhanden war als in dem normalen Augenbecher. Doch rechnete er auch mit der Moglichkeit, dass eine iibergrosse Linse so entstehen konnte, dass der Induktor mit dem Reaktionsmaterial eine grossere Kontaktflache oder mehrere Kontaktflachen nahe aneinander gehabt hatte. Als ein Beweis dafiir hielt er den Umstand, dass in einigen Fallen die iibergrossen Linsen mehrere Faserkerne hatten, und in anderen Fallen mehrere, bis vier, selbstandige Linsen in demselben Keim induziert worden waren.

S. Ranzi, Milano: Le role des proteines de structure dans le developpement de Vembryon.

Chr. P. Raven, Utrecht: On maturation in the egg of Limnaea stagnalis (with demonstration).

A detailed study of the maturation divisions in the eggs of Limnaea has shown that the second maturation spindle arises by a direct transformation of the inner central body of the first maturation spindle. The spermaster fuses temporarily with the deep end of the second maturation spindle, forming the inner aster of the maturation amphiaster. The observations have been published in: Bijdragen tot de Dierkunde (Leiden), Vol. 28. 1949.

J. Pasteels, Bruxelles: Mouvements localises et rythmiques de la membrane de fecondation chez Chetopterus, Mactra et Nereis (avec demonstration).

Des oeufs fecondes de Chetopterus montrent, en relation avec l'expulsion des globules polaires ainsi qu'avec les deformations de l'oeuf qui precedent et accompagnent le premier clivage des ondulations rythmiques et localisees de la membrane de fecondation.

Des oeufs actives de Chetopterus montrent egalement des ondulations rythmiques et localisees de la membrane vitelline; ils surviennent a la periode telophasique de la mitose monasterienne et correspondent a la partie du cortex qui sera ulterieurement deformee par des lobulations. Des constatations analogues ont pu etre faites sur des oeufs fecondes de Mactra, qui a la suite du vieillissement, etaient engages dans une evolution monasterienne; de plus, dans ce cas, les lobulations apparaissaient exclusivement aux poles animal et vegetatif et presentaient, aux differents cycles monasteriens, une localisation rappelant le type de clivage normal.

Ces deformations de la membrane sont conservees par la fixation au Bouin, ce qui a permis, dans le cas des oeufs actives du Chetoptere d'etablir une correlation entre l'activite de la membrane et la localisation des granules de Lillie.

II est conclus que cette activite de la membrane ne peut etre expliquee que par l'expulsion rythmique et localisee d'une substance a partir du cortex ovulaire; ce qui prouve l'existence de permeabilites locales et rythmiques en rapport avec le cycle mitotique et le devenir morphogenetique de l'oeuf.



176

A. Giroud, Paris: Repercussions sur le foetus dcs avitaminoses maternelles (avec demonstration).

Les avitaminoses maternelles entrainent des repercussions diverses suivant leur degre d'intensite. A un degre intense il y a sterilite, a un degre moindre la fecondation est possible, mais l'embryon meurt, enfin a un degre encore moins marque l'embryon presente des anomalies. Outre cet interet general, cette etude permet de realiser des experiences de mecanique du developpement irrealisables autrement chez les mammiferes.

Par exemple: on voit que la chorde induit la morphogenese du nevraxe, que l'ebauche oculaire n'est pas le determinant des organes paraoculaires, que l'ebauche optique induit la formation du cristallin: faits qui prouvent le mecanisme du developpement est le meme chez les mammiferes que chez les vertebres inferieurs.

Ch. H. Heuser, Baltimore: Sections and photographs of human embryos of the 2nd and 3rd weeks of development (with demonstration).

The I. I.E. is indebted to Profs. F. Baltzer and F. E. Lehmann of Berne for their kind hospitality and the trouble they have taken in the organization of the symposium and the meeting.

The secretary, Chr. P. Raven.



LIST OF MEMBERS OF THE "INSTITUT INTERNATIONAL

D'EMBRYOLOGIE".



Prof. Dr H. B. Adelmann, Ithaca, N.Y.

Prof. Dr P. Ancel, Paris. (Emer. member)

Prof. Dr M. Avel, Bordeaux.

Prof. Dr B. I. Balinsky, Johannesburg.

Prof. Dr F. Baltzer, Bern.

Prof. Dr L. G. Barth, New York 27, N.Y.

Prof. Dr G. R. de Beer, London.

Prof. Dr H. Bluntschli, Bern. (Emer. member)

Prof. Dr J. Boeke, Utrecht. (Hon. President)

Prof. Dr P. Bouin, Vendresse (Ardennes). (Emer. member)

Dr J. Brachet, Bruxelles, Ouderghem.

Prof. Dr P. Brien, Bruxelles.

Prof. Dr A. J. P. v. d. Broek, Utrecht. (Emer. member)

Prof. Dr H. V. Br0ndsted, Kobenhavn 0.

Prof. Dr E. van Campenhout, Louvain.



Prof. Dr A. Celestino da Costa, Lisboa.

Prof. Dr Chuang Hsiao-Hui, Peiping.

Prof. Dr E. G. Conklin, Princeton, N.Y. (Emer. member)

Prof. Dr D. P. Costello, Chapel Hill, N.C.

Prof. Dr G. Cotronei, Roma.

Prof. Dr A. Dalcq, Bruxelles.

Prof. Dr S. R. Detwiler, New York City 32, N.Y.

Prof. Dr N. Dragomirow, Moskow. (proposed as to be member)

Prof. Dr R. M. Eakin, Berkeley 4, Calif.

Prof. Dr CI. Estable, Montevideo, Urug.

Prof. Dr G. Fankhauser, Princeton, N.J.

Prof. Dr E. Faure Fremiet, Paris.

Miss Dr H. Fell, Cambridge, Engl.

Prof. Dr D. Filatow, Moskow. (proposed as to be member)



177



Prof. Dr P. Gerard, Bruxelles.

Prof. Dr A. Giroud, Paris Vie.

Prof. Dr O. Grosser, Zell-amSee. (Emer. member)

Prof. Dr E. Hadorn, Zurich.

Prof. Dr V. Hamburger, St. Louis 5, Mo.

Prof. Dr W. J. Hamilton, London W.C. 2.

Prof. Dr R. G. Harrison, New Haven, Conn. (Emer. member)

Prof. Dr C. G. Hartman, Raritan, N.J. (Emer. member)

Mrs Prof. Dr E. B. Harvey, Princenton, N.J.

Prof. Dr K. Henke, Gottingen.

Prof. Dr Ch. H. Heuser, Baltimore 5, Md.

Prof. Dr J. P. Hill, London N. 3. (Hon. member)

Prof. Dr L. Hoadley, Cambridge, Mass.

Prof. Dr E. Holmdahl, Uppsala.

Prof. Dr J. Holtfreter, Rochester, N.Y.

Prof. Dr C. J. v. d. Horst, Johannesburg.

Prof. Dr S. Horstadius, Uppsala.

Prof. Dr R. R. Humphrey, Buffalo, N.Y.

Prof. Dr N. K. Koltzoff, Moscow 67. (Emer. member)

Prof. Dr E. Kopsch, Berlin-Wilmersdorf. (Emer. member)

Prof. Dr G. Krediet, Utrecht.

Prof. Dr F. E. Lehmann, Bern.

Prof. Dr G. Levi, Torino, Italia. (Emer. member)

Prof. Dr F. T. Lewis, Boston, Mass. (Emer. member)

Prof. Dr W. H. Lewis, Philadelphia 4, Pa. (Emer. member)

Prof. Dr P. E. Lindahl, Uppsala.

Prof. Dr G. Lopashov, Moskow. (proposed as to be member)

Prof. Dr O. Mangold, Freiburg i. Br.

Prof. Dr G. D. F. Murray, Sydney.

Prof. Dr J. Needham, Cambridge, Engl.



Prof. Dr J. S. Nicholas, New Haven, Conn.

Prof. Dr S. Pai, Hangchow.

Prof. Dr J. Pasteels, Bruxelles.

Prof. Dr A. Penners, Wiirzburg.

Prof. Dr K. Peter, Birkenstein, Oberbayern. (Hon. member)

Prof. Dr L. W. Polezajew, Moskow. (proposed as to be member)

Prof. Dr S. Ranzi, Milano.

Prof. Dr Chr. P. Raven, Utrecht.

Prof. Dr G. Reverberi, Palermo.

Prof. Dr E. Rotmann, Koln.

Prof. Dr J. Runnstrom, Stockholm.

Prof. Dr A. M. Schechtman, Los Angeles 24, Calif.

Prof. Dr H. Stieve, Berlin N.W.

Prof. Dr L. S. Stone, New Haven 11, Conn.

Prof. Dr T. Thomson Flynn, Belfast, Ulster.

Dr S. Toivonen, Helsinki.

Prof. Dr G. Tondury, Zurich 7.

Prof. Dr T. Ch. Tung, New Haven, Conn.

Prof. Dr V. C. Twitty, Palo Alto, Calif.

Prof. Dr A. Tyler, Pasadena 4, Calif.

Prof. Dr L. von Ubisch, Paradis, Norge.

Prof. Dr P. Vintemberger, Strasbourg. (Emer. member).

Prof. Dr C. H. Waddington, Edinburgh 9.

Prof. Dr A. Weber, Geneve. (Emer. member)

Prof. Dr P. Weiss, Chicago 37.

Prof. Dr B. H. Willier, Baltimore 18, Md.

Prof. Dr H. de Winiwarter, Liege, Belg. (Emer. member)

Prof. Dr G. B. Wislocki, Boston, Mass.

Prof. Dr E. Witschi, Iowa City.

Prof. Dr M. W. Woerdeman, Amsterdam.

Prof. Dr E. Wolff, Strasbourg.

Prof. Dr C. L. Yntema, Syracuse 10, N.Y.



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