a of 6" 



■lb 



THE PHILIPPINE 



JOURNAL OF SCIENCE 



EDITED BY 



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



WITH THE COOPERATION OF 



GEORGE F. RICHMOND, M. S.; W. D. SMITH, Ph. D. 



ALVIN J. COX, Ph. D.; GEORGE I. ADAMS, D. Sc. 



RAYMOND E. BA.CON, Ph. D.; H. D. GIBBS, B. S. 



NELLIE LOUISE COOK, B. L., M. A. 



PUBLISHED BY 



THE BUREAU OF SCIENCE 



OF THE 

 GOVERNMENT OF THE PHILIPPINE ISLANDS 



A. Chemical and Geological Sciences and 

 The Industries 



Volume V 



1910 



With 31 Plates, 43 Figures, 2 Maps, and 1 Diagram 



^ro^.9^ 



99tifi7 



MANILA 



BUREAU OF PRINTING 



1910 



2r\8 



rj4-£ 



