27 
to express my llianks for his very careful work, carried on 
often under difficult and most disagreeable conditions. The 
facilities of the Pepper Clinical Laboratory were very gen- 
erously placed at our service by the Director, Dr. Alfred 
Stengel. 
The number of animals mentioned in this report does not 
by any means represent the total number which have died 
at the Gardens during the period covered. Birds and native 
animals very often die in a short time after being received, 
from the injuries and disturbances incident to their capture 
and confinement; and the majority of the more common 
varieties of reptiles succumb before the end of the winter 
season. Such animals were not submitted to jpost mortem 
examination. 
In ten of the animals examined no cause of death was 
discovered, though careful investigation of all the organs 
was made, as well as bacteriological examination of the 
blood. Change in food, water, temperature and general en- 
vironment, may cause the death of wild animals in captiv- 
ity, without producing gross or apparent lesions of any of 
the structures of the body. It is probable that in some 
cases the animal dies of a toxaemia due to improper food, 
though we have been unable to determine the existence of 
this condition at autopsy. The post mortem changes have 
usually rendered the bacteriological examination very un- 
satisfactory. 
In the cases of tuberculosis — unless the character of the 
lesions was beyond doubt — the tubercle bacilli were sought 
for, and in uncertain cases inoculation experiments were 
made. Tuberculosis occurred most often in the monkeys, 
though one bird — the green-winged trumpeter — had tuber- 
culosis of the liver. The tubercular lesions of the monkeys 
were very extensive. Every structure in the thorax and 
the abdomen has been found to be invaded by this disease. 
In several cases tubercles were found in the walls of the 
heart, — a very unusual seat of the disease in man. In 
making autopsies on tubercular monkeys we have been im- 
pressed by the vitality which not only enabled these ani- 
