118 DISEASE IN WILD MAMMALS AND BIRDS 
chronic lymphatic leucemia ; a case of this has been cited 
under leucemia. 
Lymphomatosis. 
Chronic enlargements of the lymphatic tissues without 
leucemic blood present a be^^dldering number of varieties, 
the best known names of which are Hodgkin's disease, 
aleucemic leucemia, pseudoleucemia and lymphomatosis. 
On occasion they are at first localized tumors, being 
generaUzed only late in the course; under these circum- 
stances they are usually classed with neoplasms in the 
form of leucosarcoma and lymphosarcoma. Examples 
of lymphatic disease answering the above description are 
limited to two, but even these must be explained in certain 
particulars. There has already been quoted under 
leucemia a case of a common Marmoset (Callithrix jac- 
chus) which was probably aleucemic leucemia of the 
myeloid variety ; the enlargement of lymphatic nodes was 
trifling. The case to be cited answers in most respects to 
the descriptions of systemic Ijonphomatosis, but there 
were found two conditions, enteritis and parasitism, 
which might be responsible for sufl&cient general toxemia 
to stimulate lymph nodes and follicles to a state of active 
growth. Even accepting these two cases as examples of 
this group, it is veiy plain that chronic systemic primary 
hmphatic hyperplasia is an exceedingly rare entity in 
wild animals. There has been no case resembling 
Hodgkin's disease of man. 
California Hair Seal {Zalophus calif ornianus) . Young 6 four 
months old. Appeared to be in good health, no loss of flesh or activity. 
Diagnosis. — Lymphomatosis. Fatty degeneration of kidneys. Em- 
physema. Chronic follicular and catarrhal enteritis. Nematodes in intes- 
tines. 
External appearance good. Both lungs distended and are tense ; 
it seems almost like a spastic dilatation — a simple emphysema — beneath 
pleural surface are many minute peteehise. Lung mottled red and gray. 
This color is present on section. Lobules clearly outlined and separable 
with fingers. Bronchi and vessels widely open, the latter containing 
small amount of fluid blood. Lymph nodes — Mediastinal, tracheal and 
those visible in neck are variously but definitely enlarged, firm, irregular 
