f 
Vol. XIII, Sec. C, No. 4 
July, 1918 
THE PHILIPPINE 
JOURNAL OF SCIENCE 
ALVIN J. COX, M. A., Ph. D. 
GENERAL EDITOR 
Section C. Botany 
MO W: j 1 
H ' As A A, - 
E. D. MERRILL, M. S. 
EDITOR 
WITH THE COOPERATION OF 
W. H. BROWN, Ph. D.; C. F. BAKER, M. A. 
L. M. GUERRERO, Phar. D.; R. C. McGREGOR, A. B. 
, MANILA 
BUREAU OF PRINTING 
1918 
