Vol. VI 



DECBMBEE; 1911 



jSTo. 6 



THE PHILIPPINE 



JOURNAL OF SCIENCE 



EDITED BY 



PAUL C. FREER, M. D., Ph. D. 



AND 



RICHARD P. STRONG, Ph. B., M. D. 



WITH THE COLLABORATION OP 



OSCAR TEAGUE, M. S., M. D.; W. E. MUSGRAVE, M. D. 



VICTOR G. HEISER, M. D.; JOHN R. McDILL, M. D. 



FERNANDO CALDERON, M. D.; JOSE ALBERT, M. D. 



PHILIP K. GILMAN, A. B., M. D.; NELLIE LOUISE COOK, B. L., M. A. 



PUBLISHED BY 



THE BUREAU OF SCIENCE 



OF THE 



GOVERNMENT OF THE PHILIPPINE ISLANDS 



B. Medical Sciences 



.>r\\sonian 



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^/ f)/f.,^riV^V 



MANILA 



BUREAU OF PRINTING 



1911 



