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General Embryolog1Cal Information Service 



1949 

(first issue) 



Maune \ ii 
JU 

WOODS H 



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. 



» 1 

U 



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. 



11. 
13. 
23. 
27. 
41. 
58. 
62. 
65. 
69. 



70. 
70. 



72. 
76. 



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 



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



into subjects used here, holds good mainly for Vertebrates. Therefore, the 
systematic arrangement was directly applied within the general subjects 
for investigations on Invertebrates. 

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". 



Ab 8 Au 

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. 



Av 9 Bea 

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. 



Bee 10 Boni 

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 12 Ch 

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. 



Ci 13 Cr 

*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. 



Ci H Dra 

*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. 



Filo 16 Gar 

*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. 



Gaz 17 Gro 

*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. 



Gru 18 Harvey 

*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 19 iij 

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. 



Ho 20 Hy 

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. 



I 21 Kon 

*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. 
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*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. 
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Pole, Moscow 67, U.S.S.R. 

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



Kop 22 Lea 

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

Deutschland. 
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II, Albertov 4, Czechoslowakia. 
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Dronnings Tvaergade 6 s , Copenhagen, Denmark. 
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Acad.. Gdansk, Poland. 
*KRAInSKA, M. K. Mag. of Sc. — Histol. and Embryol. Inst.. 

Univ. of Warszawa, ul. Chalubinskiego 5, Warszawa, Poland. 
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Holland. 
*KREMER, Mej. A. — Hubrecht Lab., Embryol. Inst., Janskerkhof 2. 

Utrecht, Holland. 
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Targu-Mures/Marosvasarhely/, Romania. 
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Kingston, Ont., Canada. 
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Gdansk, Poland. 
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New Haven, Conn., U.S.A. 
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Univ., Krakow, St Anne 6, Poland. 
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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. 
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Dep. of Physiol.. P. Rautatiekatu 13, Helsinki, Finland. 
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de Bruxelles, 1850, Chaussee de Wavre, Bruxelles, Belgique. 
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Univ., Oostersingel 69, Groningen, Holland. 
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Holland. 
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Univ., Columbus 10, Ohio, U.S.A. 



Leb 23 Li 

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

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of North Carolina, Chapel Hill, N.C., U.S.A. 
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et du C.N.R.S., Inst, de Zool. et de Biol, gen., 12, Rue de 

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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. 
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Peking, Ching Shan Tung Chieh, Peiping, China, Asia. 
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Ching Shan Tung Chieh, Peiping, China, Asia. 
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111., U.S.A. 
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Uppsala, Sweden. 
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exper. Biol., Norrtullsgatan 16, Stockholm, Sweden. 
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Stockholm, Drottninggatan 116, Stockholm, Sweden. 
*LINDVALL, S. Engineer. — Wenner-Grens Inst, for exper. Biol.. 

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



Lo 24 Mi 

LOPASHOV, G. Dr — Inst, fur Cytol. und Embryol., Voronzovo, 
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de Med., Paris Vie, France. 
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de l'Univ. Poznan, ul. Swiedckiego 6, Poznan, Pologne. 
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Utrecht, Janskerkhof 3, Utrecht, Holland. 
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*MINGANTI, A. Dr — 1st. di Zool., Via Archirafi, Palermo, 

Italia. 






Mo 25 Newh 

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

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Italy. 
*MONTALENTI, G. Dr So, Prof. — 1st. di Genet., Via Mezzo
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Helsinki, Finland. 
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Fejlodestani Intezete, (Inst, of Anat., Hist, and Embryol.), 

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London W. 1., England. 
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Newt 26 Pap 

*NEWTH, D. R. B.Sc. — Dep. of Zool., Univ. Coll. London, Gower 

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of Lodz, Nowotki 137, Lodz, Poland. 
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Par 27 Pio 

'PARMENTER. C. L. Ph.D.. Prof. — Dep. of Zool.. Univ. of 

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Gdansk, Poland. 



Pis 28 Ree 

*PISANO, A. Doct. en Ci., Prof. — Inst, de Zool., Ci. Biol., Univ. 

Nac. de Tucuman, Miguel Lillo 205, Argentien, S. America. 
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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. 



Reh 29 Sal 

*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. 



San 30 Sh 

*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. (?) 



Si 31 Step 

'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. 



Stev 32 The 

'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. 



Tho 33 Vand 

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. 



Vann 34 Williams 

*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 35 ^~
•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. 



Zh 36 Zw 

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) 



Ab 61 Amprino 

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. 



Toro 104 Ts 

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. 



Vandebroek 106 Vo 

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. 



Ill 
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. Ilia and Illb 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). 



112 

/:'.vfr.i subdivision of Ilia and Hlb. 

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 Hid. 

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 



175 

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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