482 DOG POX 
been trasmitted to the horse or to the cow but has been transmitted to 
man, sheep and goats. According to Gerlach and Bollinger, sheep 
pox may be transmitted to the pig, and Nocard states that human 
variola may be transmitted to swine. According to Hoare, the erup- 
tions appear on the back, abdomen, chest, neck, head and inner sur- 
face of the thighs. The lesions first appear as petechial spots, which 
soon become papules, and on the 5th or 6th day vesicles and on the 
9th or 10th day pustules. The pustules form crusts or scabs which are 
thrown off in a few days leaving a well defined cicatrix. 
DOG POX 
Synonym: Variola canina. 
Characterization. Youatt has described a disease of dogs charac- 
terized by the formation of small red spots irregularly rounded on the 
abdomen, inside of the groin and' forearm. They are sometimes 
isolated and sometimes clustered together. There is a rise of tempera- 
ture and on the second day the spots become larger and the integu- 
ment tumefied at the center of each. The third day the spots are 
generally larger and the skin more prominent at the center of the 
spots. This is increased on the 4th day. On the following days the 
pustules take on their peculiar characteristic appearance. The 
variation in the period of eruption depends largely upon the age. 
This was considered by Youatt as rather characteristic of variola. 
Dupuis of the Brussels veterinary school made an investigation of 
vaccine in dogs in 1883-5 from which he drew the following conclu- 
sions: 
“That vaccine is transmissible to dogs with its specific characters. 
“That the first vaccinal inoculation generally preserves against the 
second. 
“That intravenous, subcutaneous and peritoneal injection gives 
immunity against the vaccine without the development of any 
experimental manifestations. 
“That the vaccine cannot by any means be considered a certain 
means of preserving the dog against distemper.” 
Recent investigations on this subject have not been noted. 
REFERENCES 
1. Berry. Contagious pustular dermatitis of sheep. 
_2. Borret. Etude expérimentale de la clavelée filtration du virus; Sero-clavelisa- 
tion; Serothérapie. Ann. del’ Inst. Pasteur, Vol. XVII (1903), p. 123. 
