LOCAL TUBERCULOUS ABSCESS IN A BULL. 
505 
I inoculated three rabbits in the anterior chamber and three 
guinea-pigs in the peritoneal cavity, using one or two drops of 
pns in each case. A guinea-pig and a rabbit were placed for con¬ 
trol in the cages with the inoculated animals. 
On March 15 th I visited the farm in company with the owner 
md Prof. McEachran. The bull was found to be a fine, healthy- 
ooking, well-nourished animal. Beneath the jaw were two small 
suppurating abscess cavities on the left side, with red, firm granu- 
ating walls. Lymph glands in the neck not enlarged. Physi¬ 
cal examination showed no evidence whatever of tuberculosis. 
In spite of Dr. McEachran’s recommendation to delay a few 
veeks till we learned the result of the inoculation, keeping the 
>ull meanwhile under observation, and carefully isolating him, 
he owner insisted on his being slaughtered immediately, together 
vith a yearling bull, the son of the one under consideration. Ac- 
:ordingly we had an opportunity of making an autopsy on both 
.nimals forthwith, but failed to detect any evidences of tubercu- 
osis in either the internal organs or glands. The penis, testes and 
asa deferentia were free from tubercles. The abscess cavities 
ppeared to be purely subcutaneous in location and showed no 
vidences of tubercles or caseous masses in their vicinity. The 
todies of the vertebrae were free from tubercles. As the meat 
/as intended for sale the muscles and intermuscular planes were 
nly examined as far as could be done while the carcass was be- 
1 g dressed. 
My notes of the inoculations are as follows : 
On March 16th, one of the rabbits shows pauophthalmitis. 
n the other two the necrosed wound is nearly healed, but slight 
laisticiritis persist. 
March 18th. , Examined sections made through the portions 
f the abscess wall hardening in alcohol. These showed a super- 
cial necrotic zone surrounded by granulation tissue formed of 
mall, round cells. No giant cells. A large number of sections 
r ere examined for tubercle bacilli without finding any. (This 
xamination was again repeated on April 24th, still with a nega- 
ve result. The absence of actinomyces was also confirmed.) 
April nth. One of the guinea-pigs had been wheezing for 
