. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TEE FCETUS. 1029 2. Pig.—The placenta is formed by an expansion of the villous tubercles, aa in Solipeds. The ciiorion is not entirely covereil by tliese tubercles, but here and there it shows briglit little patches, where its tissue is menly covered by an epitiitlial layer; it is also glabrous at those points where it is in contict with the chorion of neighbouring foetuses. The chorion lias not a body and two coruua, but is merely an elongated sac, the two extremities of whicli are in relation witli the adjacen
. The comparative anatomy of the domesticated animals. Horses; Veterinary anatomy. TEE FCETUS. 1029 2. Pig.—The placenta is formed by an expansion of the villous tubercles, aa in Solipeds. The ciiorion is not entirely covereil by tliese tubercles, but here and there it shows briglit little patches, where its tissue is menly covered by an epitiitlial layer; it is also glabrous at those points where it is in contict with the chorion of neighbouring foetuses. The chorion lias not a body and two coruua, but is merely an elongated sac, the two extremities of whicli are in relation witli the adjacent foetuses. The inner face corresponds, as in Ruminants, with the amnion and allantois. The latter is the same as in the Cow, though it is very much sliortcr; the inner covering of this membrane c<.)ntains the glycogenic matter, but that of the amnion has none. The umbilical , amnion, and cord, are also the same as in Ruminants. 3. Carnivora.—Tlie placenta is a thick ginile. surrounding the middle portion of the chorion. It has a livid colour in its midi lie, green on its borlers. When the green-ctdoured matter is isolated, and treated witii alcohol and cldoroform, then submitted to certain rea'.;enta. it uppeais to be identical with the colouring matter of the bile, and derived, as that is, from the hsomoglobin of the blood. The allantois is disposed, in principle, as in Solipeds. The chorion is quite like that of the Pig with regard to form, but it is different with regard Kij. 5t} SEMI-DIAGRAMM.\TIC VERTICAL, SECTION' OF A MATEltNAI, COTYLEDON OF THE SHEEP. (^cr, Uterine sinus; e, epitlielial lining of the sinus; V, veins, ami c, flexuous arteries of the sub- epithelial connective tissue to structure, as it hac no chora' plates v/ith mineral granules. Nothing is known as to the organ which fulfils the function of these deposits. The umbilical wsicZe—which remains very developed at all periods of fcetul life—resembles in shape the allantois of the Pig, be
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Keywords: ., bookauthorcha, bookcentury1900, bookdecade1900, booksubjecthorses
