No. 4.] CATTLE COMMISSIONERS' REPORT. 469 



In the experience of this commission and others, frequent 

 cases have arisen where the disease has been found in portions 

 of the body not ordinarily examined in the regular post-mortem 

 examination, and in such cases the animal upon the ordinary 

 examination would be pronounced free from disease. 



As an instance of this sort, the commission would cite the 

 following rase in its experience: an animal was condemned 

 and killed, and a most careful and thorough examination of the 

 more usual locations was made to discover the seat of the 

 trouble. Evidence of the disease not being found, it was then 

 noticed that one of the hind legs was somewhat swollen. The 

 skin was stripped down, and along the chain of lymphatics 

 lying between the tendon and the bone numerous deposits of 

 undoubted tuberculous material, quite patent to the naked eye, 

 were discovered. It is fair to say, further, that this product 

 was taken to the laboratory and examined, and proved to con- 

 tain large numbers of the bacilli. 



A further and very interesting instance in the experience 

 of members of this Board is one wherein, after the more 

 usual examinations had been made and no disease discovered, 

 attention was called to one of the eyes, where, at the inner 

 canthus, an undoubted mass of the tuberculous deposit was 

 found. The diagnosis was proved in the laboratory. 



It has occurred further, in the experience of the members 

 of the Board, in their practice as veterinarians, when their 

 attention has been called to a live animal exhibiting disease 

 of either the brain or spinal cord, that, after death, deposits 

 of the peculiar product of tubereulosis have been found within 

 one or the other or both of these organs. It is not usual, in 

 the ordinary post-mortem examinations, to open the cavities 

 containing the brain and spinal cord, because of the great 

 time required and the carefulness of the manipulation neces- 

 sary ; nor is it customary to examine the eyes or the legs, 

 below the larger joints, for the presence of the disease; and 

 vet, had not these examinations been made in these instances, 

 the animals would have been pronounced free from disease, 

 and the error would have been laid to tuberculin. 



It is examples of this sort which make the commission, 

 after its long experience, feel that, when tuberculin is applied 

 under proper conditions and clearly points to the presence of 



