American Veterinary Review. 
MAY, 1897. 
EDITORIAL. 
TUBERCULINE AND MAELEINE. 
Tuberculine and malleine have reached in Europe another 
important phase in their sphere of usefulness. They are no 
longer used as means of diagnosis only, but are now commonly 
employed in testing animals at the time of purchase, an excel¬ 
lent measure, especially with malleine, which is used by com¬ 
panies having large stocks of animals, and in which the purchase 
of live stock is in most cases of a large number of animals. In 
many of the companies they are used for public vehicles, omni¬ 
buses, tramways, cabs, etc., and all horses are malleined before 
their purchase is concluded—even in the presence of the fact 
that their use and their value are yet denied by some veteri- 
narv authorities. 
Tuberculine is largely used on the continent, and every ani¬ 
mal that reacts is destroyed. I had an opportunity a short time 
ago to see three specimens of lesions of a tuberculous nature ac¬ 
cused by tuberculine, which were presented at the Societe Cen- 
trale de Medecine Veterinaire by Prof. Nocard, which, unusual 
as they were, offered a gieat deal of interest. In one, a cow, 
that had numerous internal lesions, was presented on one of her 
fore fetlocks a large, hard swelling. What its nature was was an 
interesting question. On the leg, amputated at the knee, a 
longitudinal section was made down to the foot. The exudate 
which constituted the enlargement so distinct during life, was a 
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