Ostetricia veterinaria, comprese le malattie degli animali da allevamento e dei nuovi nati . ntion della formazione di idrocefalo cerebrale iy] questione, conduce ordinariamente per la morte del feto appena theumbilic circolazione è sospesa. L'effetto su cranio è interessante e ha un importantrelation alla domanda di consegna. La scatola cranica è usuallyincomplete, e la porzione principale del tumore o enlargementis totalmente privo di qualsiasi rivestimento osseo e consiste semplicemente della pelle e di vestigia delle meningi del cervello. Al baseof tumore, le ossa del cranio diffusione

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Veterinary obstetrics, including the diseases of breeding animals and of the new-born . ntion of the formation of cerebral Hydrocephalus iy] matter, leads ordinarily to the death of the fetus as soon as theumbilic circulation is suspended. The effect upon the skull is interesting, and has an importantrelation to the question of delivery. The bony skull is usuallyincomplete, and the principal portion of the tumor or enlargementis wholly devoid of any osseous covering, and consists merely ofthe skin and vestiges of the meninges of the brain. At the baseof the tumor, the bones of the skull spread outward and thenupward to constitute a chalice-like cavity with irregular borders. The cause of hodrocephalus in the fetus is unknown. It isobserved in all animals, but is most frequently seen in the calfand somewhat rarely in the foal. The diagnosis is comparatively easy when the fetus presentsanteriorly, but may become somewhat difficult in the posteriorpresentation. When the fetus presents anteriorly, the obstetristusually finds upon inserting his hand that the cranium is abnor-. FiG. 123. Hydrocephalus. Calf. Skull from Fig. 122. (Harms).mally enlarged and soft or fluctuating. Somewhat rarely thehydrocephalic cranium is complete, the osseous walls completelyenclosing the abnormal brain. At first there may be difficultyin identifying the head, because of the great disproportion andits soft, fluctuating character. The actual diagnosis can be madeonly by identifying some definite parts of the head, such as themouth, nostrils, ears or eyes, and determining that the enlarge-ment has a definite relation to these.47 738 Veteri7iary Obstetrics In the posterior presentation, the presence of hydrocephalus isnot likely to be suspected until the entire fetus, except the head, has been extracted, when suddenly its progress is checked orcompletely stopped, and it becomes necessary to make an ex-amination in order to determine the cause. Handling. The indications in hydrocephalus are the

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