Vol. V 



DECEMBER, 1910 



No. 6 



THE PHILIPPINE 



JOURNAL OF SCIENCE 



EDITED BY 



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



WITH THE COOPERATION OP 



W. D. SMITH, Ph. D.; ALVIN J. COX, PH. D.; H. D. GIBBS, B. S. 

 GEORGE I. ADAMS, D. Sc; NELLIE LOUISE COOK, B. L., M. A. 



PUBLISHED BY 



THE BUREAU OP SCIENCE 



OF THE 



GOVERNMENT OF THE PHILIPPINE ISLANDS 



A. Chemical and Geological Sciences and 

 the Industries 



^ 



\\\\soroan Instil 



MAY 2$ 1& 



%k 



V-: 



MANILA 



BUREAU OF PRINTING 



1910 



