350 
M. ARLOING. 
Tuberculosis) reports that the proportion of tuberculous cattle 
varies from 8.4 to 10.6 per 1000. 
At the abattoir of Augsburg, the proportion of tuberculous 
cattle has been in 1887 3.62 per cent, and that of tuberculous 
calves 0.013 per cent. 
It has been mentioned above that at the Congress of French 
Veterinary Surgeons in 1885, a minority did not vote for the 
immediate inscription of tuberculosis in the law regarding the 
sanitary police of contagious maladies. Impartiality lays 
upon us the duty, which is easy to discharge, of indicating 
the reasons that guided our honorable associates. Their 
timidity proceeded from the difficulty of diagnosing bovine 
tuberculosis. 
There will be found in the Report of the International 
Congress at Brussels, at page 214 and the following, a review 
by M. Lvdtin of the diagnostic signs of tuberculosis. He 
observed, in concluding, that veterinary surgeons have too 
often wrongly exaggerated the difficulties of diagnosis of this 
affection. The attentive breeder succeeds in putting out of 
his herd the tuberculous animals, and it appears to him (M. 
Lydtin) that the veterinarian, who is armed with more exten¬ 
sive theoretical knowledge and more numerous methods of 
investigation, may aspire to doing as well as the farmer. 
It is true that the latter has his animals under his eye for 
a long time, and proceeds with deliberation, while the veteri¬ 
nary surgeon is required to give his diagnosis with certainty 
in a short period. 
Nevertheless, we think with M. Lydtin, that these are not 
motives for discouragement, but reasons for thoroughly in¬ 
vestigating the question and for perfecting our means of diag¬ 
nosis. It has been so regarded by several of our associates, 
of whose works we proceed to give a resume. 
The lesions of tuberculosis may evolve in all the organic 
systems, but we have hardly to concern ourselves except with 
the thoracic and the abdominal tuberculosis, after which may 
be grouped tuberculosis of the lymphatic glands, superficial 
or deep, tuberculosis of the udder, and that of the bones. 
To establish the diagnosis of the pectoral form some think 
