Non- Venereal Infections which Invade the Genitalia 323 



and probably unfits the bull for breeding except when mated 

 with infected cows held under the Bang plan. Even in such 

 cases, it needs to be determined that the vas deferens, vesi- 

 culae seminales, prostate gland, and penis are free, or the 

 bull becomes a serious menace even to tuberculous cows, be- 

 cause when such parts are involved tubercle bacilli may be 



Fig. 93— Tuberculosis of Sheath and Prepuce of Bull. 



S, Sheath ; U, urethra ; G, glans ; F, fornix ; CC, corpus cavernosuni, 



/, /, fissure extending into tubercular mass. 



ejaculated with the semen from the sound testicle, inducing 

 primary genital (venereal) tuberculosis in the cow, which 

 may promptly bring her breeding life to a close. 



Tuberculosis of the vas deferens, seminal vesicle, and 

 prostate is possible, but apparently too rare to be of great 



