TDBERCULOSIS. 



393 



The other cow was also a case of general tuherculosis, and presented 

 somewhat similar lesions of the udder. The induration of the gland was 

 readily detected, and examination of the milk showed, as in the previous 

 case, the presence of tubercle bacilli. 



It will be observed that in neither of these cases was the disease 

 limited to the udder ; in both the implication of the gland was part of 

 general tuberculosis. 



Fig. 172.— Tubercul.\k Ulcebation of the Intestine of a Cow. 



The first cow was killed, and the following lesions were found at the 

 post-mortem examination. 



Thorax.—Ihe lungs and bronchial glands were extensively invaded 

 with tubercular deposit. The glands were greatly enlarged and densely 

 fibrous, in many cases with central, stone-like masses, grating on section 

 against the edge of the knife. In the lung there was every stage, from 

 the early deposit to purulent cavities, cheesy masses, and calcified cUhris. 



Abdomen.— There were a few caseous nodules in the liver, but none 

 in the spleen. The mesenteric glands formed an almost continuous chain 



