7 1 6 Diseases of the Geriital Organs 



flock of ewes, the rams were isolated and the affected ewes 

 removed immediately from the herd. Daily inspection was 

 made of the apparently well ewes and any which developed 

 the symptoms of the disease were promptly separated. A 

 few weeks later breeding was resumed without recurrence 

 of the disease, and in due time the ewes dropped healthy 

 lambs. 



About 1909 an affection not distinguishable from that ob- 

 served by Flook, McFadyean and others in England be- 

 came widely prevalent and caused quite serious losses in 

 condition and wool yield upon the extensive sheep ranges 

 of the Rocky Mountains. It was attributed by Mohler and 

 others to B. necropho7^us. It was known generally as lip- 

 and-leg ulceration and was characterized chiefly by the for- 

 mation of necrotic patches about the feet and lips. When 

 breeding was attempted, the genitalia became severely in- 

 volved. The mortality was low, but there was important 

 loss of condition. I saw one flock of Western sheep which 

 were quite generally involved after tl .'" j,rrival in the East. 

 Being feeders, thus excluding coitus, the necrosis was vir- 

 tually limited to the feet and lips. 



The disease is apparently easilj' '''^ntrolled by isolation 

 of the affected, with disinfection of the necrotic areas. 

 Cauterization of the ulcers with solid silver nitrate appears 

 especially efficacious. When the disease is present during 

 the breeding season, breeding should be promptly suspend- 

 ed until the infection has been brought under control. 



