320 FBVEKS AND THEIR TEKATMENT. 



SMALL-POX. 



I reproduce Mr. Youatfs description of small-pox in dogs : 

 In 1809, there was observed, at the Royal Veterinary School a2 

 Lyons, an eruptive malady among the dogs, to which they gave the 

 name of small-pox. It appeared to be propagated from dog to dog 

 by contagion. It was not difficult of cure ; and it quickly disap- 

 peared when no other remedies than mild aperients and diaphoret- 

 ics were employed. A sheep was inoculated from one of these 

 dogs. There was a slight eruption of pustules around the place 

 of inoculation, but nowhere else ; nor was there the least fever. 

 At another time, also, at the school at Lyons, a sheep died of the 

 regular sheep-pox. A part of the skin was fastened, during four 

 and twenty hours, on a healthy sheep, and the other part of it on 

 a dog, both of them being in apparent good health. No effect was 

 produced on the dog, but the sheep died of confluent sheep-pox. 

 The essential symptoms of small-pox in dogs succeed each other in 

 the following order : the skin of the belly, the groin, and the in- 

 side of the fore arm becomes of a redder color than in its natural 

 state, and is sprinkled with small red spots irregularly rounded. 

 They are sometimes isolated, sometimes clustered together. The 

 near approach of this eruption is announced by an increase of 

 fever. 



On the second day, the spots are larger, and the integument 

 is slightly tumefied at the center of each. On the third day, the 

 spots are generally enlarged, and the skin is still more prominent 

 at the center. On the fourth day, the summit of the tumor is yet 

 more prominent. Towards the ends of that day the redness of 

 the center begins to assume a somewhat grey color. On succeed- 

 ing days, the pustules take on their peculiar characteristic appear- 

 ance, and cannot be confounded with any other eruption. On the 

 summit, is a white circular point, corresponding with a certain 

 quantity of nearly transparent fluid which It contains, and covered 

 by a thin and transparent pellicle. This fluid becomes less and 

 less transparent, until it acquires the color and consistence of pua. 



