164 



STATE BOARD OP AGRICULTURE. 



on account of failure to breed. For two years the lactic acid treat- 

 ment has been applied to all cases requiring treatment of the genital 

 passages. We cannot determine the amount of damage caused by the 

 ''Granular Vaginitis" in these herds. 



In the work that we are doing with pure cultures of Bact. abortus 

 (Bang) it was found tliat one of the heifers, the one that is being 

 immunized, shows lesions of "Granular Vaginitis" very markedly, while 

 the check is free from any lesioDS of this disease. We may eventually 

 profit by this condition. 



Beef Cattle. College Herd. October 26-10. 



On January 21st, 1911, we visited Chilson, Michigan, on account of 

 other trouble but incidentally were able to examine a number of herds 

 for "Granular Vaginitis." 



The herd of Mr. J- 



R- 



consisted of 10 registered and 



grade Holsteins and one calf 2 to 3 months old. The latter was not 

 affected. The records on the others are as follows: 



The trouble in this herd seemed to have been introduced into other 

 herds, but it is verv difficult to trace this affection from herd to herd. 



