168 
.T. L. ROBERTSON. 
During all this time the temperature hardly rises above the 
normal. When such indecisive symptoms are observed it would 
he proper to have recourse to the examination of the blood ; the 
normal proportion is so small that a leucocytosis would be readily 
recognized. Or a quantity of the blood may be caught in a test 
tube, plunged in cold water, and the characteristic separation into 
two la 3 T ers, the upper of which is of dirty-grey color, and formed 
chiefly of leucocytes. 
These elements may be constituted of leucocytes or globulins. 
The predominance of the leucocytes would lead ns to think of 
the same disease of the spleen ; on the contrary, when the glo¬ 
bulins are the most numerous, the diathesis is localized on the 
lymphatic ganglions, perhaps the intestines or the marrow of the 
bone. 
Of course, it would be another matter if we had to do with 
what is called pseudo (pseudo—false) leucocythemia. In this 
case the change in the blood does not consist in a superabundance 
of white corpuscles, but only in a great anaemia of globules. 
In our animals the signs are much more vague than in the 
human patient, principally on account of the difficulty of exploring 
the splanchnic cavities. 
Ganglionic Leucocythemia .—When the diathesis is localized 
in the lymphatic ganglia, and it has invaded those that are ex¬ 
ploitable from the exterior, then the symptoms are better marked. 
All the ganglia are not affected at the same time. The inter¬ 
maxillary generally hypertrophy the first, and may simulate the 
glands in chronic glanders. They are hard, rounded, mammil- 
lated, insensible, non-adherent to the skin, which is very yielding 
at their surface. But there is no discharge nor lesions of the 
pituitary membrane ; then, too, they are symmetrical, and you will, 
as a rule, find symmetrical swellings of other glands in the parotid 
region, prepectoral, in the groin. These tumors do not ulcerate; 
the skin always remains the same over their surface—no adhe¬ 
sion. 
A rectal examination will disclose a large, hard, roughened 
mass under the lumbar vertebrae. There may be no other lesions 
found at the post mortem except those of the lymphatic ganglia, 
