﻿IX, B, 1 Ward et al.: Transmission of Rinderpest 53 



Table II. — Exposure of susceptible cattle 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. 



2999 



Days. 



1 



4 



7 



11 



Days. 



1 

 1 

 1 

 2 



Negative 



do 



do 



do 



Susceptible. 

 Do. 

 Do. 

 Do. 



3000 



3001 



3063 





Like the preceding one, this experiment did not demonstrate 

 that infection of rinderpest could persist in the corral for even 

 one day after the removal of the sick. 



Experiment 3. — This experiment was designed to duplicate 

 the conditions of the preceding experiments with presumably 

 infected corrals, but under different weather conditions, as 

 cloudy rainy weather existed during the progress of this experi- 

 ment. The same corral was used as in the preceding one'. 



The corral had been subjected to infection by bulls 3064, 3066, 

 and 2998. On the day that they were removed the disease had 

 progressed among them as follows: 3064, third day of febrile 

 temperature; 3066, third day; and 2998, sixth day. The expo- 

 sure of the various animals is described in the following notes: 



July 22, 1911. Bulls 2998, 3064, and 3066, all infected with rinderpest, 

 were removed from the corral at 4 p. m. Weather rainy and corral very 

 muddy. 



July 23. Two susceptible cattle, 3147 and 3151, were turned loose in the 

 corral at 4 p. m. Weather rainy. 



July 24. Two susceptible carabaos, 3164 and 3178, were turned loose 

 in the corral at 4 p. m. The cattle mentioned in the preceding paragraph 

 remained in the corral. Weather rainy. 



July 25. The 2 cattle and 2 carabaos still in the corral. Sky cloudy and 

 showers. 



July 26. Animals still in the corral. Sky cloudy and showers. 



July 27. All of the susceptible animals were removed from the corral 

 on this date and segregated. Sky cloudy and showers. 



None of the animals used in this experiment contracted rinder- 

 pest. All of them were later shown to be susceptible with the 

 exception of 3151, which died as a result of exposure to bad 

 weather. 



The main details of the experiment are summarized in Table 

 III. 



