278 GUP3RRKU(» AND t>KVll.[.A. 



Wickline,- in tlie investigations made b}' liim at Camp McGratli, 

 Philippine Islands, for the purpose of detemiining the effects of tlie 

 tropical climate on the white race, also arrived at very similar I'esults. 

 In three examinations conducted by him at intervals of six months in 

 104 American men, he found a diminution of hannoglohiu, an increase 

 of the red blood corpuscles, a steady decrease in the polymorphonuclear 

 cells and a relative augmentation of the lymphocytes, and especially of 

 the eosinophiles. 



In the differential counting of the leucocA'tos we followed the technique 

 recommended by Rogers, counting backward and forward across the 

 slide, and eliminating the borders and edges of the blood smear. Tlie 

 results were obtained from a count of 250 leucocytes in each instance. 



As to the classification of the leucocytes we also followed the method 

 adopted by Da Costa and by Eogers. 



= The Military Surgeon (1908), 23, No. 4, 282. 



