21 
Tuberculin Test. 
At the beginning of the year there were no animals 
in the infirmary. During the year we have tested 55 
monkeys and lemurs, which is a rather larger number 
than usual on account of a systematic retest of every 
monkey in the monkey house (except anthropoids) and 
also some of the monkeys in the outdoor cages. This 
was done in accordance with our custom of retesting and 
disinfecting the house every two years. Of the above 
number nine were newly-arrived animals. Very few 
(3) showed sufficiently bad charts to remove them from 
the monkey house. The general results of this retest, 
then, has been to assure ourselves that we are still ap- 
parently satisfactorily free from this scourge. 
Tuberculosis. 
Twenty-two deaths are recorded this year from tuber- 
culosis, of which only two were in mammals. These 
consisted in the orang, ^'Sylvia," before mentioned, and 
a lion. 
Among the birds very much the same orders are affected 
as in past years, namely Passeres, Psittaci, Anseres and 
Galli; and with no predominance in special groups. The 
Columbae have scarcely suffered since the epidemic of 
1913-14, incident to a newly-arrived shipment of badly 
tuberculous birds. The cases of avian tuberculosis this 
year have been scattered in almost all parts of the Garden, 
and we cannot suppose that any one part is especially 
infected with the organism. 
Prolapse of Rectum. 
Dr. Corson-White reports four cases of prolapse of 
the rectum, as follows: White-tailed deer, Nos. 4845 and 
5040; common raccoon. No. 4709; common opossum. 
No. 4828; and one case of prolapse of the cloaca in a 
silver pheasant No. 4689. Occurring, then, in animals 
which progress on all fours, the factor of gravity, which is 
commonly urged in causation of human cases must be 
relegated to at least only a mirror or occasional position. 
