230 The Philippine Journal of Science 1916 



kept in quarantine thirty-one days before it was used. At no 

 time during this period did it have a high temperature or show 

 any symptoms of sickness. 



August 21, 1915, pig 214 was placed in corral No. 1. This ex- 

 periment was designed to determine the following: (1) Whether 

 the virus of rinderpest was still alive in such a form as to give 

 the disease to a susceptible pig when placed in the corral, since 

 a pig ten days previously had died of rinderpest in this corral 

 (this was in line with other experiments that have been 

 performed at the laboratory on cattle and carabao,(6) in which it 

 was proved that the virus of rinderpest was in such a condition 

 that it was unable to cause the disease after a corral had been 

 freed from sick animals for twenty-four hours) ; and (2) whether 

 the virus of hog cholera was present in the corral, since a pig, 

 which eleven days previously had died in this corral, showed 

 simultaneous lesions of hog cholera and of rinderpest. 



Before the completion of the experiment on pig 214 in this 

 corral, added evidence was obtained on two other points : (1) The 

 possibility of a pig contracting rinderpest after surviving hog 

 cholera; and (2) the possibility of transmitting, by means of the 

 caretaker, the virus of rinderpest from a pig sick with that 

 disease to a susceptible pig. 



History of corral No. 1 immediately previous to placing pig 214 therein : 

 On August 11, which was eleven days previous to the beginning 

 of this experiment, pig 212 (experiment 12) had died of rinder- 

 pest in this corral ; this animal also showed lesions of hog cholera. 

 On August 12, which was ten days previous to the beginning of 

 this experiment, pig 208 (experiment 3) had died of rinderpest 

 in this corral; this animal also showed lesions of hog cholera. 



August 25, 1915, pig 214 showed a rise in temperature. Its 

 afternoon temperature remained high, ranging between 40° and 

 40.8° C, until September 15, when it gradually subsided to 

 normal. During this time, although the animal did not develop 

 diarrhoea or show marked inappetence, it was unthrifty and had 

 a mucopurulent discharge from its eyes, presenting symptoms 

 of a mild attack of hog cholera. 



October 5, 1915, pig 216 (experiment 26) was placed in corral No. 2. 

 This corral was approximately 45 meters from corral No. 1, in which 

 pig 214 was kept at that time. Pig 216 was on its second day 

 of temperature, D., N. E. on this date, and it died of rinderpest on 

 October 6. 



Pig 218 (experiment 13) developed its first rise of temperature on 

 October 9 and died of rinderpest four days later. These two animals 

 were cared for by the same man that took care of pig 214 in corral 

 No. 1. 



