,. VIII, Sec. A, No. 6 



December, 1913 



THE PHILIPPINE 



JOURNAL OF SCIENCE 



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



GENERAL EDITOR r-?JC*<- 



Section A 



CHEMICAL AND GEOLOGICAL SCIENCES 

 AND THE INDUSTRIES 



EDITED WITH THE COOPERATION OF 



W. D. SMITH, Ph. D.; H. D. GIBBS, Ph. D.; W. C. REIBLING, Ch. E. 



W. E. PRATT, A. M.; R. R. WILLIAMS, M. S.; D. S. PBATT, PH. D. 



RICHARD C. MCGREGOR, A. B. 



MANILA 



BUREAU OF >• HINTING 



1918 



