19 



Case No. 3. Black grade cow, eight to ten years old. 



Tliis cow was one of the tweuty-eight purchased some two years 

 before, (See page 15) and after purchase was kept under exactly 

 the same conditions as the others obtained at that time. 



At the beginning of the tuberculin test, she was slightly emaciated 

 and was occasionally noticed to be tympanitic but this never caused 

 serious trouble. 



A deep, full, moist, single cough was sometimes heard from her 

 but no more than the usual quantity of mucus was ever noticed 

 about the nostrils. 



*In heat. 



Aiitopsj/, Dec. lo, 1S92. 



Lungs were filled with tubercles, from four to six inches in diam- 

 eter, most of them containing large quantities of caseous material 

 with but little pus. 



The bronchial glands were much enlarged and filled with caseous 

 material. The lower portion of the lungs and thorax were Ihickly 

 covered with tubercles, in places adherent. One small tubercle was 

 found in the liver. 



The records of the other tuberculin tests appear in the following 

 tables. 



