500 DISEASE IN WILD MAMMALS AND BIRDS 
remainder were a Capybara and an Agouti. The general 
type is that of much caseation with little or no sur- 
rounding fibrosis. One illustrative case is cited : 
American Beaver {Castor canadensis) . General tuberculosis. The 
animal presents generalized tuberculosis. The regional lymph nodes 
show caseous nodules. The right hip joint shows caseous material 
about the acetabulum with necrosis and pathological fractures in 
the OS innominatum immediately above the acetabulum and including 
its cavity. Lungs show almost no normal respiratory tissue, the proc- 
ess being a diffuse preeaseous, partly gelatinous pneumonic phthisis. 
The superior and posterior mediastina show caseous glands. There is 
mUiary tuberculosis of the liver. Nodular caseous tuberculosis of the 
spleen with small tubercles and some cirrhosis of the intervening tissue. 
There are caseous nodules in all perirenal glands and in the kidney 
cortices. The psoas muscle glands are densely caseous. The pelvic 
organs except about the right acetabulum escape involvement. Adre- 
nals not opened but probably not involved. 
Ungulata. This order shows the most definite figures 
among those for the order of mammals. Nearly one- 
tenth of the whole number of specimens have had some 
form of tuberculosis and of a very definite character. It 
is well at first to mention, however, that only four of 
thirteen families are represented, from which four came 
328 of the total 365 autopsies. The remaining thirty- 
seven were such animals as tapirs, giraffes, swine, and 
peccaries, in all of which tuberculosis has been reported 
from elsewhere. 
Pulmonary disease with less prominent lesions in 
other organs, especially the intestines and their related 
glands, speaks in favor of the aerogenic route being the 
common one. This of course has been a bone of conten- 
tion among veterinarians, and I do not presume to settle 
the matter with these figures. 
This order resists tuberculosis to a certain degree as 
attested by the fibroulcerative character of the majority 
of the cases. Two instances, one in a buffalo and one in 
a deer, showed very highly fibrotic pulmonary lesions 
with a partial attempt to surround and wall off numerous 
areas of caseation. So too in this order there is a greater 
