CHRONIC INFECTIOUS DISEASES 109 



This case was treated as in No. 1. Eighteen injections 

 were given, by which time the tumour had disappeared ; 

 the ali'ected half of the gland, however, was, on com- 

 pletion of treatment, smaller than the other, and had 

 a shrunken appearance. 



3. A two-year-old colt suffering from schirrous cord 

 on left side. Cord was removed as high up as possible 

 in inguinal canal, without actually entering the peri- 

 toneal cavity. The operation wound did not com- 

 pletely close, a small fistula remaining, which 

 continued to discharge pus. From this pus an auto- 

 genous vaccine was prepared, initial dose being 10 

 million organisms, subsequent doses increased as in 

 No. 1. Altogether eight injections were given, by 

 which time the fistula had completely closed, and 

 the animal was again normal. So far as I can 

 ascertain, there was no relapse in any of these three 

 cases. I consider that vaccine treatment in cases 

 like the above is a valuable adjunct to surgical 

 measures, but more clinical evidence is required to 

 establish treatment by vaccine, in these conditions, 

 upon a firm basis. 



Infectious Abortion of Bovines. — Infectious abor- 

 tion is a very common disease of cattle, from which 

 enormous economic losses are sustained by farmers 

 and breeders throughout the world. Under the term 

 " infectious abortion" are included those cases which 

 occur in otherwise healthy animals, as a result of in- 

 fection producing inflammatory lesions of the uterine 



