﻿56 



The Philippine Journal of Science 



1914 



March 14. At 1 p. m. bull 3339 which also had been deprived of food 

 and water was placed in the corral. It immediately began to drink from 

 the fresh supply of water provided in the same pail as used by the sick, 

 and ate fresh fodder that had been scattered over the ground. The weather 

 continued unchanged. 



March 15. At 1 p. m. bull 3343 was placed in the corral after having 

 been deprived of food and water during the forenoon. The animal im- 

 mediately began to eat fodder from the ground. Weather unchanged. 



March 16. Weather unchanged. 



March 17. At 1 p. m. bulls 3341, 3339, and 3343 were removed from 

 the corral and placed in stalls isolated from infection. Weather conditions 

 remained unchanged. 



None of the animals developed rinderpest as a result of ex- 

 posure in this corral, but all were subsequently proved to be 

 susceptible. 



The principal details of the experiment appear in Table V. 



Table V. — Exposure of susceptible animals to supposedly infected corral. 



Animal No. 



Interval 

 between 



removal of 

 sick and 



exposure 

 of sus- 

 ceptible 

 animal. 



Time of 

 exposure 

 in corral. 



Result. 



Susceptibility 

 test later. 



3341 



Days. 



1 

 2 

 3 



Days. 

 4 

 3 



2 



Negative--. 



do 



.. . do 



Susceptible. 

 Do. 

 Do. 



3339 



3343 









As usual the experiment furnished no evidence of the persis- 

 tence of infection in the corral even for twenty-four hours. 



Experiment 6. — This experiment, with the exception of a 

 slight variation in the weather conditions, is a duplication of 

 the previous one, the same corral, No. 3, being used. Four bulls 

 had been employed to infect the corral. At the time of removal, 

 the disease in 3338 had reached the twelfth day after inocu- 

 lation, seventh after initial temperature; 3335, sixteenth day 

 after inoculation and tenth after initial rise; 3336, thirteenth 

 day after inoculation and eighth after initial rise. These had 

 been kept in the corral during the earlier stages of the attack, 

 but 3330 was left there for only three days. When removed, 

 the progress of the disease in this animal corresponded to the 

 twentieth day after inoculation and sixteenth after initial rise 

 of temperature. The details regarding periods of exposure in 

 the corral appear in the notes below. 



