﻿52 The Philippine Journal of Science 1914 



Experiment 2. — This experiment was designed to check the 

 results of the previous experiment under slightly different con- 

 ditions. The corral employed, designated No. 2, was well shaded 

 by a tree, and contained a watering trough, but no pool. 

 Infected animals had occupied this corral for nineteen days 

 before the beginning of the experiment. A photograph of this 

 corral is shown in Plate I, fig. 2. 



The cattle in the corral on March 7, 1911, were 3062, seventh 

 day after inoculation and showing fever and inappetence ; 3057, 

 fourteenth day after inoculation, died same day; 3042, twenty- 

 seventh day after exposure and well; 3043, twenty-eighth day 

 after exposure; 3045, forty-first day after exposure and well; 

 and 3048, thirtieth day after exposure, but still sick. 



Of these six, it is most likely that animals 3048, at the fifth 

 day of febrile temperature ; 3057, at the sixth day ; and 3062, at 

 the fifth day only were disseminating infection at the date they 

 were removed from the corral, a fact unsuspected at the time the 

 experiment was performed. All had occupied the corral for 

 periods ranging from two to six days. The details concerning 

 the exposure of the animals in the corral appear below. 



March 6, 1911. The following animals were removed on this day: 3062, 

 3057, 3042, 3043, 3045, and 3048. Sky clear and bright. 



March 7. Bull 2999 was placed in the corral. Sky clear and bright. 



March 8. Bull 2999 was removed from the corral, disinfected, and 

 segregated with a control. Sky clear and bright. 



March 9. Corral empty. Sky clear and bright. 



March 10. Bull 3000 was placed in the corral. Sky partly cloudy. 



March 11. Bull 3000 was removed, disinfected, and segregated with a 

 control. Sky cloudy with slight shower. 



March 12. Corral empty. Sky clear and bright. 



March 13. Bull 3001 was placed in corral. 



March 14. Bull 3001 was removed from corral, disinfected, and segre- 

 gated with a control. Sky clear and bright. 



March 15. Corral was empty. Sky clear and bright. 



March 16. Corral was empty. Sky clear and bright. 



March 17. Bull 3063 was placed in the corral. Sky clear and bright. 



March 18. Bull 3063 is still in corral. Sky partly cloudy. 



March 19. Bull 3063 was removed from the corral, disinfected, and 

 segregated with a control. Sky cloudy with some rain. 



None of the cattle exposed in the corral in this experiment 

 contracted rinderpest. All were subsequently shown to be sus- 

 ceptible to rinderpest by contracting the disease after suitable 

 exposure. 



The main details in the foregoing are summarized in Table II. 



