io6 



Veterinary Obstetrics 



males sometimes show an aversion to mating with affected 

 females. 



Beebe and Ewing (Jour. Med. Research, Sept., 1906, do. Vet. 

 Jour., July, rgoy) record the presence in these tumors of spi- 

 rochsete in one out of a series of cases, but failed to connect their 

 presence with the cause of the malady. 



Fig. 12B. Infectious Venereal Granuloma of Bitch. (C. A. White. > 



lyater, Mettam (Veterinary Journal, February, 1907) records 

 the discovery of an organism in this disease belonging to the 

 group of spirochaete, which he believes to be the specific cause. 



Histologically, the tumors consist of large round or polyg- 

 onal cells, which multiply rapidly and push the contiguous 

 tissues aside without their becoming involved in inflammatory 

 or other disease changes. 



The disease has been repeatedly transmitted experimentally by 

 inoculations in the genital mucosa and other tissues. 



