THE PHILIPPINE 
JOURNAL OF SCIENCE 
Alvin J. Cox, M. A., Ph. D. 
GENERAL EDITOR 
SECTION C. BOTANY 
E. D. MERRILL, M. S. 
EDITOR 
WITH THE COOPERATION OF 
C. B. ROBINSON, Ph. D.; P. W. GRAFF, B. S.; W. H. BROWN, Ph. D. 
VOL. VIII 
1913 
With 13 Plates and 7 Text Figures 
MANILA 
bureau of printing 
1913 
