70 THE DISEASES OF DOMESTIC ANIMALS. 



This calf developed very poorly for the first two years of its life ; 

 its neck and head were small and long, and its bones very small, so 

 that the whole habitus of the animal was cachectic. This animal was 

 killed in the fall of 1869. In the course of the winter of 1869-'70 

 many of the cattle began to cough, and among them two, " A " and 

 " B," so severely that my services were requested. 



I found all the animals in an apparently healthy condition ; only 

 the two, A and B, were noticed to cough. By auscultation, I found 

 in A a peculiarly marked bronchial respiration in portions of the 

 left lung. At this time I knew nothing of the breeding, or the 

 phenomena seen in the above-mentioned calf, which had been 

 slaughtered. During this winter and the succeeding summer the 

 two cattle, A and B, besides others, continued to cough. All the 

 animals on the farm coughed during the winter of 1870-"T1, except 

 the yearlings and some calves which were kept in another stable. 

 In the spring of 1871 the two cows, A and B, began to emaciate so 

 much that it was considered advisable to kill them. The autopsy 

 revealed the general characteristics of tubercular pneumonia, and 

 tuberculosis of other organs. Basing my opinions upon the pre- 

 viously mentioned experience, I made no hesitation in pronouncing 

 all the cattle in this stable that coughed as afflicted with tuberculo- 

 sis, and advised the owner to gradually get rid of them all. On ac- 

 count of economical reasons, this was easier said than done, and the 

 owner has never since been free from this disease among his cattle. 



During the period from 1 864-' 71, tuberculosis has been always 

 present among the cattle of this owner, who has lost nineteen head 

 from the disease in that time. 



The author gives four other illustrations of similar extension of 

 tuberculosis among cattle upon other farms, and closes his remarks 

 with the following interesting case : 



The milk from one of these cows had been used for some time 

 in a cooked condition, but the condition of the cow finally became 

 so bad it was decided to give the milk to the hogs, but uncooked. 



From May of the same year, the farmer's wife noticed that the 

 young pigs (four or five months old) fed upon this milk did not ap- 

 pear to thrive well, and as, in the course of a few weeks three died, 

 I was requested to make an examination of the last one. I found 

 the same much emaciated. I found a tuberculous peritonitis with 

 effusion in the cavity of that organ. The lungs and bronchial glands 

 were normal; the mesenteric glands enlarged — on section of the 

 same, found them filled with a tuberculous mass ; tubercles in the 

 liver. In the course of a few weeks the two remaining pigs of the 



