222 
As examples of the leucocytic change, we may 
give the following :— 
(i) Small mononuclear - - 18*i per cent. 
Large mononuclear and 
transitional - - - 31*4 ,, 
Polynuclear - - - 50*2 ,, 
Eosinophil - - - - 0*4 „ 
A fatal case of malignant tertian (Bastianelli). 
(ii) Small mononuclear - - 19*1 per cent. 
Large mononuclear and 
transitional - - - 41*0 ,, 
Polynuclear - 39*0 „ 
Eosinophil - o*6 „ 
A fatal case of comatose malignant tertian (Bastianelli). 
(iii) Small mononuclear - - 18*1 per cent. 
Large mononuclear and 
transitional - - - 26^4 „ 
Polynuclear - - "55*3 „ 
Malignant tertian fever, t. 37*2° C. (Panse). 
(iv) Small mononuclear - - 14*8 per cent. 
Large mononuclear and 
transitional - 46*7 „ 
Polynuclear - 38*5 „ 
Malignant tertian, t. 97*6 F. (S. and C.) 
The figures are by no means always as high as 
this, but, as we have already said (p. 43), we consider 
a value above fifteen per cent, as diagnostic of malaria. 
The higher values are appreciated at once by an inspec¬ 
tion of the slide where the large mononuclears seem to 
occur in every field, and may be pigmented. For the 
low values a careful count is required. 
Further, together with the increase of the mono¬ 
nuclears in malaria there are, if thorough search is made, 
also pigmented leucocytes to be found. The relative 
count of malaria is of great assistance in at least two 
