662 
AUSTIN PETERS. 
but a microscopic examination would be necessary to ascertain 
whether it was tuberculous or not, which was not obtained. 
Tag No. 79.—Yearling heifer. 
March 10th killed.—Autopsy showed two very much en¬ 
larged tuberculous mediastinal lymphatic glands, also a cheesy 
nodule in the right lung. 
Tag No. 80.—Two-year old heifer. 
March 10th killed.—Autopsy showed tuberculous media¬ 
stinal glands, and a nodule in the right lung. 
Of the forty animals slaughtered but one was found to be 
absolutely healthy, making the per cent, of disease among them 
97 % P er cent. 
Of the entire herd, counting two doubtful cases as not being 
tuberculous, the per cent, of the diseased is 84 per cent., forty- 
four out of the fifty-two killed being positively tuberculous. 
The cause of the remarkable fall in the temperatures between 
the hours of 10 A. M. and 2 P. M., March 8th, was due to letting 
the cattle out to water, the water being cold and the majority of 
the creatures very much emaciated, in one case (tag No. 48) the 
drop was nearly ten degrees. 
The local phenomena at the point of the subcutaneous in¬ 
jection of the tuberculin solution was not as carefully noted 
in each individual case as it should have been, but in a general 
way it may be said that each animal that reacted had a swelling 
at the point of inoculation that was hot and very painful upon 
pressure, and that upon removing the skin after death there was 
either ecchymosis or extravasation of blood at this point. 
That tuberculin is a valuable aid in diagnosing bovine tu¬ 
berculosis must be admitted after a careful study of the forego¬ 
ing tables, but it should be used in conjunction with ordinary 
methods of examination, and is not a means for any tyro to use 
in picking out diseased cattle by simply squirting a little fluid 
under the skin, and then waiting for a plainly-marked reaction. 
Of the twenty-nine adult cows tested it will be seen that 
but fourteen were previously decided to be tuberculous by the 
ordinary means of examination, yet upon post-mortem all ex- 
