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...ent peculiarly favorable m.aterials for studies of this character, for the embryo becomes functional at a very early stage of differentiation, in this respec ...m of response to any sort of excitation applied to the trunk region of the embryo, viz., a swim,ming reaction, and the same neurones are involved throughout

72, 278. Catfish, habits of, 278.

From the Department of Embryology, Carnegie Institution of Washington, Baltimore, Maryland ...ation of the cavities in the cartilaginous capsule of the ear in the human embryo. Amer. Jour. Anat., vol. 22.

The youngest embryo in which any of the air-sacs appear as In the same embryo may be seen the first indication of the

C. W. M. PoYXTER. Some observations on wound healing in the early embryo. Twelve to the extremities. B. The external form of an abnormal himaan embryo of 23 days.

Translation by Joat V Nonidu Carnegie Institution Wuhington Translation by Jos6 P. Nonidez Carnegie Institution of Washington

6. Relation of early cleavage planes to the antero-posterior axis of the embryo embryo soon dies (Moore, ’41, ’46, ’47).

lumen of every vesicle containing a large embryo. and one dead embryo in the right uterus three and one-half

stage is 1.70 mm. as compared with .76 in the 4 mm. embryo. embryo has the process of sex-cell migration commenced. This

Embryo: nine to fourteen days’ incubation 12 tion of the expectation of finding cortical tissue in the embryo-

Embryo: nine to fourteen days’ incubation 12 ...nd. The realiza- tion of the expectation of finding cortical tissue in the embryo- logical stages of the right ovary was previously anticipated by Willier (

first observable movement of the embryo. Bonnet might stimulate the heart of the embryo in the process

Carnegie Institution of Washington Director of the Department of Marine Biology of the Carnegie

Fig. 369. A The brain of a trout embryo 100 days old. B. The brain of a trout 0 months Franz studied both embryonic and adult forms and pointed out that the embryo,

C. W. M. PoYXTER. Some observations on wound healing in the early embryo. Twelve figures ...nd Atterbury. Bursa and tonsilla pharyngea; a note on the relations in the embryo calf. Eight figures 251

Carnegie Institution of Washington Director of the Department of Marine Biology of the Carnegie

Carnegie Institution of Washington Director of the Department of Marine Biology of the Carnegie

...esearch rooms" at Woods Hole wishes to acknowledge his indebtedness to the Carnegie Institution for the opportunities thus presented for the carrying on of thi ...behavior and reactions during every stage of development from the time the embryo left the q^^ membranes till it attained the adult condition, in its behavio

*Carnegie institution, station of experimental biology. Cold Spring Harbor, 272. Carnegie Institution for the opportunities thus presented for the

the embryo occur within the oviduct. Examples are: Salamandra salamandra, believed was the essential element in that it contained the preformed embryo