Necrotic Disease of the Genital Organs 715 



swelling at this time was sufficient to make the exposure of 

 the penis impossible. The symptoms continued over a pe- 

 riod of about two weeks. On the third day there appeared 

 on the skin near the opening of the sheath a small sore which 

 was covered with a brownish scab. This sore continued to 

 spread around the opening of the sheath. On the fifteenth 

 day after inoculation, two small abscesses had formed on 

 the prepuce near the primary sore ; these ruptured the next 

 day, leaving shallow ulcers. At this time a third small 

 abscess had formed. All the ulcers were covered later with 

 brownish crusts, after which they began to heal. Attempts 

 to transfer the disease artifically from this animal to an- 

 other wether and ewe failed. McFadyean did not succeed 

 in isolating any organism which he believed to be the cause. 

 While both outbreaks here mentioned have been compara- 

 tively mild in their course, McFadyean remarks that the 

 disease deserves careful observation and that newly pur- 

 chased rams might well be examined with reference to this 

 affection before being used for breeding. 



G. H. Williams (Vet. Jour., Vol. XVII, p. 64) records two 

 outbreaks of this disease. In his first, in a flock of eight 

 ewes and one ram, two ewes and the ram were affected. 

 There was balanitis and ulceration of the penis. He ap- 

 plied to the parts chinosol and zinc sulphate in solution. 

 The animals recovered in about two weeks. In his second 

 outbreak, three rams and forty ewes, in a flock of fifty, 

 showed the symptoms described by Flook and McFadyean. 

 In one ewe eruptions occurred upon the nostril. In some 

 of his cases, the vulva was greatly swollen and distorted ; 

 in others there were extensive granulations of a dark color 

 which protruded out through the vulva. The granulations 

 and ulcers were penciled with silver nitrate and the entire 

 parts washed with a solution of zinc sulphate and chinosol. 



In another flock of ewes, which had not associated with 

 this one, except that one of the rams had been with them, 

 it was found that twelve had eruptions about the lips and 

 noses but no genital affection was present. A second ram 

 in this lot escaped the disease, so far as seen. In the larger 



