Vol. XIII, Sec. B, No. 3 



May, 1918 



THE PHILIPPINE 



JOURNAL OF SCIENCE 



ALVIN J. COX, M. A., Ph. D. 



GENERAL EDITOR 



Section B 



Tropical Medicine 



EDITED WITH THE COOPERATION OF 



J. A. JOHNSTON, M. D., Dr. P. H.; OTTO SCHOBL, M. D. 



STANTON YOUNGBERG, D. V. M. ; H. W. WADE, M. D. 



Committee on Experimental Medicine 



J. D. LONG, A. M., M. p.; B. C. CROWELL, M. D. 



FERNANDO CALDERON, B. A., L. M. 



Committee on Clinical Medicine 



r. c. McGregor, a. b& h. e. kupfer, a. b. 



MANTLA 



BUREAU OK PRINTING 



1D18 



