SOCIETY MEETINGS 
305 
I was particularly struck with the classification of blood dis¬ 
eases in one particular work,- and thought it was worth pre¬ 
senting to the association. The essayist has laid no particular 
stress on the fact of leucaemia being a blood disease, nor has he 
made any classification of varieties of this disease. The human 
practitioner makes a distinction of several conditions, which we 
group together with leucaemia; therefore I note the following 
classification, which I think is a most excellent one : * 
1. Anaemia I (?) Primary anaemia j J * Chlorosis. 
( {p) Secondary anaemia. *■ 2 ‘ * ernicious anaemia. 
2. Leucaemia I Splenic-myelogenous. 
( Lymphatic. 
3 - Leucocytosis. 
4. Hodgkin’s disease. 
w k 11S C i aS . Slficatl . on 1S based P ur ely on the condition of the 
'? made P 0 fuMe only by a system of staining 
Ehrlich tn P le stain) when an altered or diseased condition of 
the white and red blood cells, particularly the former, is ob- 
served. We find a peculiar blood phenomena existing in each 
of the outhned conditions ; for instance, in pernicious ansemia 
we find a certain overgrown or enlarged red nucleated cell 
negaloblast) which is characteristic of the trouble, while all 
the red cells are often enlarged. 
In normal blood we find several varieties of white cells the 
principal ones called polymorphonuclear neutrophiles 60 to 70 
per cent., and lymphocytes, 30 to 30 per cent. In leucsemia, we 
have two classes of the disease, one, the splenic, the other, the 
lymphatic variety. The splenic is called splenic-myelogenous 
owing to a very much enlarged white cell, which Prof. Ehrlich 
m, S m nl J e OC PL’ and seems to be the predominating cell. 
The blood 111 the lymphatic form is filled with small lymphocytes 
about the size of red cells. Leucocytosis is simply an increase 
in the normal white cells, and may be either physiological or 
pathological. _ Hodgkin’s disease is known as pseudo-leucaemia 
splenic anaemia, lymphoma, etc. We known it by the term 
ymp oma, and it is. characterized by a general enlargement of 
all the lymphatic glands and sometimes the spleen. * There is 
n °. P er ceptible increase in white cells, and it is only distin¬ 
guished from leucsemia by a blood examination. Of course the 
etiology of these diseases is unknown, and with your permission, 
Wl1 leac * a s h or t extract from the author commenting on this 
* “ American System of Practical Medicine,” p. 633-702. 
