THE MALE GENERATIVE ORGANS 



267 



contagious, and capable of being communicated from dog to 

 bitch, and vice versa, during copulation. 



Three histories mentioned by Smith and Washbourn are particularly 

 typical and worth recording in detail, as they illustrate the extreme 

 contagiousness of the growths. 



From January to June, 1894, dog A was mated with twelve bitches, 

 eleven of whom became infected. Examination of the dog revealed a 

 growth on the penis, just behind the corona. The bitches were of various 



Fig. 170. — Carcinoma of the Prepuce in a Foxhound.^ 



ages, the younger being less severely affected than the older. Three, the 

 oldest and most severely affected, had to be killed. Another dog which 

 served three of the affected bitches caught the infection, developed a 

 growth, and before this was noticed mated with two healthy bitches, one 

 of whom became contaminated. 



In another kennel and another breed entirely, five bitches were served 

 by a certain dog, and all became affected with vaginal growths. One of 

 these bitches was subsecjuently served by another dog, and, in spite of 



1 For this photograph I am indebted to Professors Mettam and 

 Wooldridge. 



