. The comparative anatomy of the domesticated animals. Veterinary anatomy. FECUNDATED EGG, SHOW- ING FORMATION OF AM- NION AND ALLANTOIS. a, Umbilical vesicle; 6, Amniotic cavity ; c, Al- lantois. Fi^. FECUNDATED EGG OF FOWL WITH ALLANTOIS NEARLY COMPLETED. a, Inner lamina of am- niotic fold; b, Outer lamina of the same; c, Point where the amnio 3. The Allantois. (Fig. 423.) The allantois is a membrane that covers the inner face of the chorion, and is folded around the insertion of the umbilical cord, to spread itself over the whole external surface of the amnion. It thus transforms tic
. The comparative anatomy of the domesticated animals. Veterinary anatomy. FECUNDATED EGG, SHOW- ING FORMATION OF AM- NION AND ALLANTOIS. a, Umbilical vesicle; 6, Amniotic cavity ; c, Al- lantois. Fi^. FECUNDATED EGG OF FOWL WITH ALLANTOIS NEARLY COMPLETED. a, Inner lamina of am- niotic fold; b, Outer lamina of the same; c, Point where the amnio 3. The Allantois. (Fig. 423.) The allantois is a membrane that covers the inner face of the chorion, and is folded around the insertion of the umbilical cord, to spread itself over the whole external surface of the amnion. It thus transforms tic folds come in contact the chorial sac into a kind of serous cavity, in which with each other; the the amnios is inclosed as a viscus. The inner, or amniotic lamina, is attached to the amnios "so slightly that dissection, and especially insufflation, easily destroys its adhesion. When the second of these measures is resorted to, in order to separate the two membranes, the allantoid sm-face assumes a bosselated allantois is seen pene- trating between the inner and outer lamina; of the amniotic Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Chauveau, A. (Auguste), 1827-1917; Arloing, S. (Saturnin), 1846-1911; Fleming, George, 1833-1901, tr. New York : D. Appleton and Company, 549 & 551 Broadway
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