34 
ciated with tuberculous animals. Their deaths can not 
be explained by association with other tuberculous 
monkeys. 
Of these 24 animals, but 5 died on exhibition: Mozam- 
bique Monkey No. 4, Yellow Baboon No. 48, Schmidt's 
Monkey No. 1, Ring-tailed Lemur No. 13 and Green 
Monkey No. 78. 
All of these others were detected by the tuberculin 
test and killed or isolated. The fact that we have de- 
tected twenty monkeys and removed them (by killing 
or isolation) from the healthy animals, thus reducing 
the chance of transmission, is a point in favor of the 
tuberculin test. A minor change in policy has been in- 
augurated during the past year. All condemned ani- 
mals are not sacrificed as heretofore, but are kept on 
exhibition in separate outdoor cages, far removed from 
the passed monkeys. 
On January 4, 1913, two Rhesus Macaques were re- 
ceived from Dr. Gerald B. Webb, of Colorado Springs, 
Colorado. They have received treatment at his hands 
designed to immunize them against infection by tuber- 
culosis. They are housed in separate cages at our mon- 
key house, and will be tested from time to time in order 
to ascertain whether they can become infected under the 
conditions obtaining in our Garden. 
Other Tuberculin Tests. 
During the year two beavers have been tested. Their 
temperature curves were very irregular, and in the ab- 
sence of any knowledge of a normal curve, judgment 
was withheld. Both animals subsequently died with 
tuberculosis. 
The Spiroptera Endemic in Parrots. 
A large part of last year's report concerned this para- 
site of parrots. At that time we stated that we felt 
sure of our diagnostic methods, but were disappointed 
