494 DISEASE IN WILD MAMMALS AND BIRDS 
geal and tonsillar infection because they found cervical 
adenitis so commonly. Our records and specimens would 
support this idea in only fourteen instances and I am of 
the impression that the lower intestinal route is more 
often responsible, even to a higher figure than is recorded 
in the table. This view is based upon the frequent occur- 
rence of enlarged glands in the mesentery, retroperito- 
neum and posterior mediastinum, in the latter location 
being quite as prominent if not more so than in the 
bronchial and tracheal area. Occasionally deposits of 
calcareous matter will be found in old caseous glands 
but in such animals there has always been some other 
spot of activity of tuberculosis. The frequency with 
which the liver and spleen are affected gives opportunity 
for hematogenic spread, a method of no small importance 
in the opinion of Eber. The chronic ulcerative form is 
quite well displayed in monkeys, interestingly enough to 
cite an illustrative case at the end of this division of the 
discussion. Five cases of distinct chronic cavitation 
were encountered; several small recent cavities were 
found in the massive caseous pneumonic cases. The two 
acute miliary cases and one of the pearl type will be dis- 
cussed briefly on a later page. 
Despite the prominence of the liver, spleen and lymph 
nodes, the lungs stand ahead of all others by a safe margin 
of visceral incidence. The spleen stands in the third 
place in this order and in the next, Lemures, but in no 
other mammalian group does this organ occupy so promi- 
nent a position. The susceptibility of lymphatiq tissue in 
the monkey is further illustrated by the large number of 
of cases showing lesions in lymph nodes. It is rather 
striking however that our material showed very few 
active ulcerations in the hnnphoid plaques of the intes- 
tinal wall nor indeed do the intestines present a large 
numerical involvement. Serous membrane tuberculosis is 
chiefly that of the pleura, upon which early precaseous 
tubercles are frequently found, usually in conjunction 
