(Caption of Figure 6, contd) 



a— -the transparent place; b — cephalic branch; c — upper, 

 swollen region of the lateral part of the vesicle; 

 d — lower, still not swollen part; e — part of the embryo 

 over the cardiac fossa; f — heart; g — occiput; h — anterior 

 part of the head; i — edge of the cardiac fossa; k — left 

 abdominal fold; 1 — right lower abdominal fold; m — internal 

 intestinal fold; n — right intestinal fold; o— spinal cord; 

 p— cavity of the intestinal canal; q, r — lateral deepenings, 

 rudiments of cavity of the body; from s to t — rudiment of 

 caudal membrane; s — united abdominal folds; t— union of the 

 intestinal folds, origin of rectum; u — slightly bending 

 end of the spinal chord; w— ascending vein; x — its branches; 

 y— right lateral vein; z — left lateral vein. 



7. Part of the vascular area, containing the embryo, covered 

 by the false amnion, after 60 hours of incubation, a — 

 immovable false amnion; b — cephalic branch; c — lateral parts 

 of the vesicle; d — caudal membrane; e, f, i, g — embryo, 

 translucent through the vesicle; f — occiput; g — protuberance 

 of right leg; h — rudiment of tailbone; i — protuberance of 

 left wing; k — cardiac fossa; 1 — commissure; m — lower fossa; 

 n — fold of commissure; o — opening between abdominal and 

 intestinal folds; p— fold of lower fossa; q — ascending vein; 

 r — its branches; s— - vein associated with the ascending; 

 t — its branches; u — descending vein; x — abdominal fold; 

 y — area formed by the union of trunk folds. 



80 



