XI, B, 5 



Boynton: Rinderpest in Swine 



229 



lesions characteristic of that disease in cattle, it will be noted 

 that the pigs exposed to these sick ones promptly developed a 

 disease which possessed all the characteristics of rinderpest. 

 Two of the animals developed a rise in temperature on the 

 fourth day after the initial exposure and one on the fifth day, 

 which time corresponds very closely with the incubation period 

 of rinderpest in cattle and carabaos. 



Of the three animals used, two, or 66| per cent, died, and one, 

 or 33J per cent, recovered, which also agrees very closely with 

 the effects of rinderpest on cattle and carabaos. 



Although the animal in experiment 11 was finally destroyed 



Fig. 2. Temperature chart of pig 212 exposed to pig. 



on account of being unthrifty, under normal conditions in the 

 Philippines, this animal undoubtedly would have been allowed 

 to live. 



In comparing the percentage of mortality in pigs exposed to 

 pigs sick with rinderpest with that of pigs exposed to cattle sick 

 with rinderpest, it appears that the virulence of the disease is 

 increased for pigs by being passed through a pig. 



RINDERPEST TRANSMITTED FROM PIG TO PIG BY MEANS OF THE 



CARETAKER 



EXPEKIMENT 14 



Pig 21i. — Known history prior to the experiment: This ani- 

 mal was a native pig, 8 months old, purchased in Manila and 



