E. XIII, SEC. A, No. 1 



JANUARY, 1918 



THE PHILIPPINE 



JOURNAL OF SCIENCE 



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



GENERAL EDITOR 



Section A 



CHEMICAL AND GEOLOGICAL SCIENCES 

 AND THE INDUSTRIES 



EDltEI> WITH THE COOPBRATION OF 



H. C. BRILL, Ph. p.; J. R. WRIGHT, PH. D.; G. W. HEISlE, M. S. 



T. DAB JUAN, A. B., Pb. D.; A. H. WELLS, A. B. 



R. a MCGREGOR, A.' B.; H. E. KUPPEE, A. B. 



MANILA 



BUREAU OP PRINTING 



1918 



