29 
losis of monkeys; this indicates that while no active 
immunity had been gained by the animal, its tissues 
reacted more like the human being's tissues than is usual 
to find in spontaneous tuberculosis of the Primates. I 
have never seen a notable attempt at scar formation in 
tuberculous monkeys aside from this one. Why this 
one monkey contracted the disease and the other, which 
had not received any treatment aimed at protection did 
not, is not clear. 
During the year nineteen monkeys have died, four of 
which were not tested because they were young born in 
the cages or died too soon after arrival. Of the remain- 
ing fifteen, five died of tuberculosis. One of this five 
was Dr. Webb's Monkey and the rest are as follows: 
Two Black-handed Spider Monkeys, 45 and 46, received 
October 8th, 1913; because of a bad chart of one, they 
were both put in outside cages; one was reinjected 
pronounced tuberculous, but because of its quality as an 
exhibit was returned to the outside cage; it was re- 
turned to the Laboratory shortly and died May 27th, 
1914; the other Spider Monkey remained out-of-doors 
for several months, was retested in December, 1914, 
and killed. Anubis Baboon 41 was received Mar. 31, 
1914, was passed with Anubis 40 to the monkey house 
where it died three months later with active progressive 
lesions; Anubis 40, the only monkey with which it was 
associated, died five months later without lesions of 
tuberculosis. The chart given by the animal which 
died of tuberculosis was good and the disease was proba- 
bly contracted directly, possibly by infected food from 
a visitor. Rhesus Macaque 169 was passed March 31st, 
1914, to the band-stand cage, where it remained until 
August 5th, 1914, when it was put into a small cage with 
Rhesus Macaque 156; here it died with advanced lesions 
September 21st, 1914. The source of this infection is 
not clear as no tuberculosis has occurred in the band- 
stand for three years and Rhesus 156 remains healthy. 
From the foregoing it will be seen that only one case of 
tuberculosis occurred in the Monkey House, although 
