40 
PROPHYLAXIS OF MALARIA. 
of normal and pathological blood in stained preparations will make 
such mistakes impossible, and this is absolutely essential to one who 
expects to make microscopic examinations of the blood for the 
diagnosis, and as an aid in the prophylaxis, of malarial infections. 
In the military service our entire system of prophylaxis and treat¬ 
ment of malaria should be based upon the recognition of the malaria 
plasmodia in man and the mosquito, for in this service the material 
is under absolute control and such a basis for prophylaxis and treat¬ 
ment is possible. 
