THE PHILIPPINE 



OF SGIENGE 



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

 GENERAL EDItOR 



Section: A 



CHEMICAL AND GEOLOGICAL SCIENCES 

 AND THE INDUSTRIES 



EDITED WITH THE COOPERATION OF 



E. PRATT, A. M.; H. C. BRILL, Ph.D.; J. R. WRIGHT, Ph.D. 

 'G. W. HEISE, M. 1; J. C. WITT, Ph.D.; T. DAR JUAN, A.B. 

 r: G. McGRiEGOR, A.B.; H. E. 3S:UPFER, A. B. 



BUBBAtr OP PBTNTING 



1916 



