REPORT OF THE TUBERCULOSIS COMMITTEE. 
4:63 
decided reactions when first tested, clearly indicating the 
presence of tubercles, but after receiving three or four injec¬ 
tions of tuberculin the reactions ceased, the general condition 
of the animals improved and at present it is impossible to 
elicit evidenee of tuberculosis, either by the physical exam¬ 
ination or by the tuberculin test. 
Aug. nth, 1892, a Jersey cow five years old received 0.25 
c.c. tubercul n beneath the skin and the temperature rose 
2° F. within twelve hours. The cow was in medium condi¬ 
tion, had a cough and her general appearance was a little be¬ 
low the average of the herd. 
Dec. 22, 1892, she received another light dose and reacted 
1J- 0 F. within twelve hours. Her condition now improved, 
she became fatter and her coat became glossy. She was 
heavy with calf at the time and that may have had some bene¬ 
ficial effect on her general condition. 
Feb. 25, 1893, she calved, and March 1st died of milk fever ; 
an autopsy was made the same day and the only evidence of 
tuberculosis was a calcareous deposit as large as a hickory 
nut in the mediastinal lymph gland, and a hard, fibrous and 
dry, cheesy area of the size of a large walnut in the tip of the 
middle lobe of the left lung. 
These lesions showed no sign of acute change; the fibrous 
walls containing the dry, hard, cheesy areas were one third 
of an inch thick and exceedingly firm. The calcareous de¬ 
posit, mixed with dry, cheesy matter in the mediastinal gland 
was also surrounded by a very dense, fibrous capsule. Last 
December a yearling Jersey bull presented the following 
symptons: Condition medium, coat dry, appetite good, tem¬ 
perature io2 q F., respiration accelerated, and each accompanied 
by a grunting sound to be distinctly heard forty feet from 
the animal; head extended. In the inter-maxillary space were 
two hard lumps as large as a goose egg and two similar lumps, 
not sensitive to pressure, were high up on each side of the 
larynx. After an injection of tuberculin (0.1 c.c.) a marked 
reaction took place, followed in two days by slight improve¬ 
ment in the general symptoms. In three months the bull re¬ 
ceived 1.2 c.c. of tuberculin in six doses, and improved con- 
