464 
A. W. CLEMENT. 
stantly until the breathing was natural and the enlarged lym¬ 
phatic glands were reduced to their normal size. The ani¬ 
mal was then killed and examined. The thoracic and abdom¬ 
inal organs were normal. The larynx mucous membrane 
was normal, the lymphatic glands, which were felt from with¬ 
out, each contained dry, cheesy, masses of the size of a pea, 
surrounded by dense fibrous membranes, and one of them 
contained a slight calcareous deposit. 
Twelve cows were treated last spring, each with nine in¬ 
jections of tuberculin, in all about 5 c.c., during a period of 
fourteen weeks. All had previously reacted to tuberculin 
and were known to be tuberculous. Nine of the cows ceased 
to react after two to five injections had been given, but the 
other three continued to react after each injection. All were 
killed, and in the nine cows lesions of the greatest variety were 
found in nearly all of the organs; the lungs, pleura, liver, 
kidney, wall of rumen and peritoneum, were surrounded by 
fibrous capsules, markedly thicker than that ordinarily found. 
Three of the nine had but slight lesions and they were made 
up almost entirely of dense, fibrous tissue with minute masses 
of cheesy material at the centers. 
The three cows that continued to react showed general¬ 
ized tuberculosis of both body cavities and affecting, espec¬ 
ially, the serous lining of these cavities. 
These experiments seem to indicate that tuberculin has a 
curative action in some cases, especially when the disease is 
slight. Certainly the symptoms frequently improve after the 
use of tuberculin, and further experiments will be necessary 
to determine the exact action at the point of disease and the 
permanency of the relief. The subject is important enough, 
and the indications that valuable results will be obtained are 
strong enough to justify the expenditure of a large sum of 
money on the work. We are indebted to Mr. Jos. E. Gil¬ 
lingham for the financial assistance, without which these ex¬ 
periments would have been impossible. 
Upon the subject further is the report of Dr. Peters, as 
follows : 
