﻿58 



The Philippine Journal of Science 



1914 



While the animals were in the corral, the ground was kept 

 wet by sprinkling. The exposure of the animals in the corral 

 is described in the following notes: 



April 25, 1912. Sick animals were removed from the corral. 



April 26. At 7.30 a. m. bull 3373 was placed in the corral. It imme- 

 diately begun to eat the contaminated fodder that had been kept wet, and 

 drank from the trough. At 7.30 p. m. bull 3374 was placed in the corral. 

 The sky was clear, and the weather dry and windy. The ground was 

 frequently sprinkled. 



April 27. At 7 a. m. bull 3375 was placed in the corral hungry and 

 thirsty. The weather was hot and windy, but the ground was kept moist, 



April 28. The weather remained unchanged, and the corral was kept 

 moist. 



April 29. There was a shower before sunrise, but otherwise conditions 

 were the same as before. 



April 30. The 3 animals were removed from the corral and placed in 

 stalls isolated from infection. 



None of the animals contracted rinderpest from exposure in 

 the corral, and all were subsequently proved to be susceptible 

 by contracting the disease after suitable exposure. The prin< 

 cipal details of the experiment are shown in Table VII. 



Table VII. — Exposure of susceptible cattle to supposedly infected corral. 



Animal No. 



Interval 

 between 

 removal of 

 sick and 

 exposure 



of sus- 

 ceptible 



animal. 



Time of 

 exposiire 

 in corral. 



Result. 



Susceptibility 

 test later. 



3373 



Days. 

 1.0 

 1.5 

 2.0 



Days. 

 4.0 

 3.5 

 3.0 



Negative... 



do 



do 



Susceptible. 

 Do. 

 Do. 



3374 



8875 





No evidence was produced to show that the sick animals left 

 the corral infective for even one day. 



Experiment 8. — This experiment was similar in purpose to 

 the preceding ones, and the same corral, No. 3, was used. Three 

 bulls had been employed for infecting the corral. When they 

 were removed, the disease in 3348 had progressed ten days from 

 inoculation and six days from rise of temperature; in 8391, 

 thirteen and eight days, respectively; and in 3303, seven and 

 five days, respectively. The first mentioned had been in the 

 corral seven days ; the second, eight days ; and the last, five days 



