688 
E. P. NILES. 
losis. This cow was a high grade Jersey, and was in good 
milking condition, showing no outward signs of the disease. 
After the test was made on the college cattle a “scrub milch 
cow was purchased and allowed to run with the other cat¬ 
tle on the farm. During the latter part of winter this cow sud¬ 
denly died of acute tubercular pleuritis and pericarditis. To 
ascertain the result of bringing this diseased animal to a healthy 
herd, the tuberculin test was repeated on the entire herd of 
seventy-two head of cattle last June, with the result that six 
animals gave the reaction as follows : 
Thoroughbred Holstein cow, three years old, reaction 2°. 
Native cow, three years old, reaction 1.1°. 
Thoroughbred Jersey cow, five years old, reaction 1.2°. 
Thoroughbred Holstein bull, three years old, reaction 2.4 0 . 
Thoroughbred Guernsey heifer, two years old, reaction 1°. 
Thoroughbred Jersey bull calf, reaction 1.1 0 . 
At this time the general condition of all of these cattle was 
good with the exception of the Holstein cow and bull. The 
bull had frequent attacks of diarrhoea and would not fatten with 
the best of care. The cow had recently calved and had not 
done well since. 
As the reaction in all of these animals (except the bull, 
which had an abnormally low temperature before injection,) 
was slight, and all but one were thoroughbreds, it was thought 
best to separate them from the herd and make a second test. It 
may be stated in this connection that the temperatures of these 
animals, both before and after injection, were submitted to Dr. 
Salmon, of the Bureau of Animal Industry, and that he reported 
none at all suspicious except the Holstein bull. The animals 
were kept separate, however, and tested the second time a 
month later, with the result that the Holstein bull was the 
only one that gave any trace of a reaction ; the elevation of 
temperature in his case being 1.3°- As a result ol this test the 
animals were allowed to mingle with the balance of the herd 
until June 15th, when my attention was called to the Jersey cow 
