244 The Philippine Journal of Science i9i6 



bull 3935 was exposed to pig 212 through the entire course of 

 the disease, including the incubation period, and that the bull 

 remained unaffected. However, when this animal was inoculated 

 with virulent blood, it contracted rinderpest, which proves 

 that it was susceptible during the exposures, but for some un- 

 known reason it failed to contract rinderpest by contact with the 

 pigs. 



In experiment 26 bull 3886 contracted rinderpest and died 

 of that disease by being exposed to pigs sick with rinderpest, 

 which proves that it is possible for cattle to contract rinderpest 

 by being exposed to pigs sick with that disease. 



Experiment 28 gives proof similar to that of experiment 26, 

 showing that it is possible for cattle to contract rinderpest from 

 pigs by exposure. 



CATTLE INOCULATED WITH BLOOD FROM PIGS SICK WITH RINDERPEST 



The following experiments were designed to furnish infor- 

 mation regarding the possibility of cattle contracting rinderpest 

 when inoculated with blood from pigs which were sick with 

 that disease. 



The cattle used in these experiments were of a similar type 

 to those used in the preceding experiments. 



EXPERIMENT 29 



Bull 38A0. — Known history prior to the experiment: Native 

 Batanes bull, 4^ years old, received at the laboratory and 

 placed in quarantine September 28, 1914. This animal was 

 kept under observation for two hundred forty-one days before 

 it was used in this experiment. 



On October 6, 1914, this animal was inoculated with 50 cubic 

 centimeters of blood taken from a sick animal at Calamba. Bull 

 3840 did not present any reaction to this inoculation. 



October 18, 19, and 20 this animal presented afternoon tem- 

 peratures of 39.9°, 40°, and 39.9° C, respectively. At no other 

 time during this period of observation did it present a high 

 temperature, and at no time did it show any symptoms of 



sickness. 



May 27, 1915, bull 3840 was inoculated with 20 cubic centi- 

 meters of virulent blood from pig 185. (For history of pig 

 185 see experiment 1.) 



May 30, bull 3840 presented a rise in temperature, registering 

 40° C. in the afternoon. 



June 5-6, N. E. 



June 7-9, D., E. L. 



