Veterinary obstetrics, including the diseases of breeding animals and of the new-born . a normal mare. Whencastrating the animal, the vagina underwent the customary bal-looning, which indicated functional activity. The erectile organoccupied a middle place between the clitoris of the mare and thepenis of the horse. In Fig. 14 is shown the generative apparatus of a pig, in whichthe hermaphroditism is of quite a different character, one of theglands having developed into a typical ovary, the other a testi-cle, the two sides of the genital apparatus thus representing thetwo sexes. Sections of the
Veterinary obstetrics, including the diseases of breeding animals and of the new-born . a normal mare. Whencastrating the animal, the vagina underwent the customary bal-looning, which indicated functional activity. The erectile organoccupied a middle place between the clitoris of the mare and thepenis of the horse. In Fig. 14 is shown the generative apparatus of a pig, in whichthe hermaphroditism is of quite a different character, one of theglands having developed into a typical ovary, the other a testi-cle, the two sides of the genital apparatus thus representing thetwo sexes. Sections of genital glands show one to be a typical crypt-orchid testicle with tubuli semeniferi, the other a primitive, ovary with scattering Graafian follicles containing ova. TheMuellerian ducts have developed into typical oviducts, uterusand vagina, and, from the Wolffian ducts, have formed typicalvasa deferentia and the penis is normal in form and extent. We have found no records of fertility in hermaphrodites of theequine or other species. Acqiiired Diseases of the Genital Organs 129. Fig, t4. , Testicle. (), Ovary. P, Penis. CC. Uterine Cornua. B. Acquired :ases of the Testicles and Scrotim. I. Tumors. We have already referred on page 125 to con-genital tumors of the testicles. Malignant tumors of the testicles are occasionally seen in thestallion and other adult male breeding animals. When the tes-9 130 Veterinary Obstetrics tide is in its normal position, such a new growth reveals itselfas a very tense swelling, inclined to be more or less nodular, notvery painful, but does not tend to cause any marked swelling ofthe surrounding parts. The affected gland becomes sterile assoon as the glandular tissue is generally invaded and, probably,in a large proportion of cases, as soon as any increased pressureis exerted upon the parenchyma of the gland. When tumors of any kind involve the testicle to a marked de-gree and determine its loss of function, it should
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