834 



Diseases of the Genital Organs 



ing young. When abortion is reported, its exact mean- 

 ing is not clear. Dystocia in carnivora is frequently, 

 if not generally, due to the death of a fetus or of 

 fetuses as a result of infection. As a rule, as in the sow, 

 the basal fetus — the fetus in the base of one horn and near- 

 est to the vagina^ — ^perishes ^first and undergoes emphysema- 

 tous decomposition, blocking the genital passage. The dis- 



FiG. 241 — Normal and Cystic Ovaries of Bitch.. 



A, Cystic ovary ; B, normal ovary with the pavilion of the oviduct turned 



back to expose the ovary ; C, normal ovary covered by the pavilion 



of the tube, showing the meatus {M) of the ovarian sac, by 



which it communicates with the peritoneal cavity. 



position of the gravid uterus of carnivora is typically illus- 

 trated in Fig. 242. The basal fetus ordinarily lies in the 

 base of one horn, and the vaginal end of its fetal sac, instead 

 of protruding into the cervix, passes across the uterine end 

 of the cervix info the base of the other horn, or practically 

 into the other uterus, since the bitch has virtually a double 

 uterus, the two organs communicating at their bases. In 

 this manner, from ovary to ovary, the two uterine cavities 

 are made to constitute one continuous tube and each fetal 



