976 Veterinary Obstetrics 



the liver weighed 72 pounds, it being likewise the seat of 

 malignant melanosis. 



Generally the disease is easily diagnosed by the chronic course, 

 the enlarged sclerotic gland, and the small abscesses and fistulae. 



The handling of the disease consists essentially of the early 

 amputation of the gland, by the method which we have already 

 described for amputating the udder of the cow. Asinbotryomy- 

 cosis of other parts of the body, so here we may cause improve- 

 ment of the disease by the internal administration of iodide of 

 potash. In our experience, however, we have never succeeded 

 in bringing about the cure of botryomycosis, in any organ, by 

 means of this drug. 



9. Infectious Gangrenous Mammitis of Ewes. 



Pustular Eruptions of the Lips of Nursing Lambs. 



We observed in our clinic an important outbreak of gangrenous 

 mammitis in ewes, which proved uniformly fatal. The 

 mammary affection began very suddenly, with intense inflamma- 

 tion, engorgement and redness of one-half of the udder. The 

 patient at once became very lame, much depressed, with loss of 

 appetite and cessation of rumination. Within 24 to 48 hours 

 after the advent of the attack, the apex of the nipple of the af- 

 fected gland assumed a dark uecrotic-black color, the teat was cold 

 and its epithelium was easily detached and rubbed off. Paralysis 

 and death rapidly followed. 



Searching for the source of the infection, we discovered 

 that most of the lambs in the flock were affected with pustular 

 eruptions of the lips. The pustules were located chiefly upon 

 the labial margins, were about yi in. high, sharply conical and 

 filled with yellow pus. Breaking, they left behind slow-healing 

 ulcers. 



Apparently the disease of the lips of the lambs, and the gan- 

 grene of the mammae of the ewes, were identical, and the nursing 

 served to transmit the infection to the udders of the ewes and 

 vice versa. Thorough disinfection of the lips of the lambs, with 

 penciling of the labial ulcers with silver nitrate, was followed by 

 a cessation of the mammitis in the ewes. 



