CONTAGIOUS ABORTION IN CATTLE 63 



seen absolutely no bad effects at all from such dosage. 



During the week which elapses between the two 

 treatments, I see to it that the entire cow stable and 

 cow yard are thoroughly renovated. The stable is 

 then thoroughly disinfected and at once white-washed. 

 If the cow-yard contains an old manure pile, it is to 

 be taken out and used on land where the cattle are not 

 likely to graze at any time. I allow no outside cows 

 to be bred to the herd bull and new additions to the 

 herd are given the same treatment as the infected 

 animals whether they are known to have the disease 

 or not. 



My limited experience with this treatment leads 

 me to believe that we have in methylene blue almost 

 a specific against this disease. Further experience 

 may enable us to so perfect the method of using this 

 treatment to an extent that it will be quite uniformly 

 successful. 



The interesting point with this treatment appears 

 in the fact that in the three herds in which I used it 

 the disease seemed to stop immediately, no abortions 

 occuring after the treatment was once under way. 

 In one herd a cow aborted on the day treatment waa 

 begun, but there were no abortions later. 



