PHILIPPINE 



OURNAL OF SCIENCE 



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



GENERAL El 



Section A 



CHEMICAL AND GEOLOGICAL SCIENCES 

 AND THE INDUSTRIES 



>. SMITH, Ph. D.; H D MliBS, Ph. D v, C. REIBLING, Ch. E. 

 E. PRATT, A. M.; R R WILLIAMS, M 3 D. 3. PRATT, Ph. D. 

 RICHAR C MCGREGOR A B 



.*nV\n 



MANILA 

 BUREAU OP PRINTIN 

 1913 



