Vou. X, SEc. B, No. 6 . : NOVEMBER, 1915 
THE PHILIPPINE 
JOURNAL OF SCIENCE 
ALVIN J. COX, M. A.; Pu. D. 
GENERAL EDITOR > 
: SECTION B 
TROPICAL MEDICINE 
EDITED WITH THE COOPERATION OF 
JOHN A. JOHNSTON, M. D., Dr. P. H. 
STANTON YOUNGBERG, D. V. M. 
Committee on Hxperimental Medicine 
J.D: LONG, A, M., M. D.; W. BE. MUSGRAVE, M. D. 
MASS BE C. CROWELL, M. D, 
Committee on Clinical Medicine 
-- B.C. McGREGOR, A. B.; H. E. KUPFER, Pu. B.. 

MANILA ¢ 
-. BUREAU OF PRINTING 
, 1915 
