﻿268 The Philippine Journal of Science im 



incubation for seventy-two hours, but there is no evidence that 

 rinderpest toxin was formed, much less that rinderpest toxin 

 caused the death of the virus. 



5. The experiments reveal the fact that rinderpest virus will 

 survive in neutral or alkaline Martin's broth at 37° C. for at 

 least forty-eight hours, but not for seventy-two hours. Two 

 cases were tested at twenty-four hours, 2 at forty-eight hours, 

 and 3 at seventy-two hours. 



6. Rinderpest virus kept in acid Martin's broth or in 5 per 

 cent potassium citrate solution did not survive after forty-eight 

 hours at 37° C. 



