(Caption of Figure 7, contd) 



cylindrical form, while lying between them a part of 

 intestine opened; r — mesentery — continuation of false 

 amnion and intestinal membranes; s — left kidney; t — part 

 of vertebrae; u — left yolk artery. 



4. The same preparation from the right side; a- — left chamber 

 of the heart; b — its right chamber; c — aorta; d — arch of 

 aorta; e — rudiment of left lung; f — right lobe of liver; 



g — right kidney; h — right yolk artery; i — right intestinal 

 membrane, from which middle intestine is formed; k — rectum; 

 1— mesentery; m — right membrane of false amnion; n — right 

 yolk vein; N — trunk of vein; o — vertebrae. 



5. Embryo represented in Table 1, Fig. 6, liberated from all 

 membrane; a — anterior part of the head; b— — occiput; 



c, d — occipital region; d, e — region of thorax; e-z— the 

 rest of the vertebrae; g — left part of the lower jaw; 

 f — -process (first rib) ; h — left auricle; i — aural canal; 

 k — left chamber of heart; 1 — aorta; m — membrane represented 

 in Fig. 3, g; n — part of false amnion from which the 

 cardiac fossa and stomach are formed; o, p, q, s, t, z — 

 first rudiment of abdomen in the form of bending membrane; 

 o — upper part of this membrane; p, s— edge of abdominal fold; 

 q — its upper left, strongly curved part; t — its edge in 

 the place where it becomes wider; v — right lateral abdominal 

 membrane; u — left membrane; s, r, z — intestinal canal 

 (fistula intestinalis) — first rudiment of mesentery with 

 still divided membranes; s — right mesenterical membrane with 

 right kidney; r — the same also — left; w— — opening between 

 membranes of mesentery, in which uncovered vertebra is 

 seen; x — vertebrae; y — rudiment of tailbone; z — rudiment of 

 the pelvis . 



6 . Embryo represented in Table I , Fig . 7 ; a — anterior part of 

 the head; b — posterior part of the head; c — protuberance 

 (see Fig. 2, D) ; d — thoracic part of the vertebrae; 



e — occipital region; f — rudiments of ribs; g — rudiment of 

 wing; h — rudiment of leg; i — hip region; k — region of 

 tailbone; 1 — rudiment of pelvic cavity; m — rudiment of true 

 amnion; n — part of thorax; o — left auricle; q— - middle 

 chamber; r a bdomen ; s — stomach; t — ascending vein; u — part 



83 



