Veterinary obstetrics, including the diseases of breeding animals and of the new-born . fetus should be quite complete, and the operator shouldcontinue the process with his hand as long as it is possible tokeep his arm in the vaginal canal alongside the portion. 2. SCHISTOCORMUvS REFLEXUS. On page 351, while discussing the development of the embryo,we have stated that under certain conditions the amniotic foldcontracts in such a manner that the spinal column is forced744 Schistocorvuis Refiexiis 745 down through the abnormally wide vitelline duct, and thesomatopleur of the
Veterinary obstetrics, including the diseases of breeding animals and of the new-born . fetus should be quite complete, and the operator shouldcontinue the process with his hand as long as it is possible tokeep his arm in the vaginal canal alongside the portion. 2. SCHISTOCORMUvS REFLEXUS. On page 351, while discussing the development of the embryo,we have stated that under certain conditions the amniotic foldcontracts in such a manner that the spinal column is forced744 Schistocorvuis Refiexiis 745 down through the abnormally wide vitelline duct, and thesomatopleur of the embrj^o is reflected so that it is virtuallyeverted, as indicated in Figs. 71, 72 and 125. This anomalyoccurs almost wholly in the cow, though a few cases have occurredin other ruminants. The viscera lie naked, in the absence of afetal body cavity, while the other portions of the fetus constitutean irregular mass, presenting the pleuro-peritoneal membrane ex-ternally in the form of an inverted pouch, open at one end,through which all four limbs and the nose may more or less pro-sed. Fig. 125. ScHisTocoRMUS (de The four legs and the head and neck lie in an inextri-cable mass, as in a pouch of skin. The .skin, with its coat of hair,constitutes the lining of the pouch, and lies in contact with thecontained limbs and head and neck. The diagnosis of this anomaly depends upon the anatomical re-lations above-mentioned. Usually the monster presents by its 746 Veterinary Obstetrics four feet and head, and consequently the operator at once comesin contact with several, or all four feet and the head. Followingalong the fetal extremities, the hand passes into a closely envel-oping pouch, lined with hair. Examining more externally, theoperators hand passes over the fetal mass and comes in contactwith the fetal viscera lying loose within the uterine cavity. If presenting by the reverse end, the operator should recognizethe viscera lying free, and the exposed, bent spi
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