The Philippine Journal of Science 
Edited by 
PAUL C. FREER, ‘M. ‘Ds, Ph. -D. 
RICHARD P. STRONG, Ph. B., M. D., Co-Editor. 
The ‘‘Philippine Journal of Science’’ is issued as follows: 
Section A. General Science, $2, United States currency, per year. 
Section B. Medical Sciences, $3, United States currency, per year. 
Section C. Botany, $2, United States currency, per year. 
The entire ‘‘Journal,’’ $5, United States:currency, per syear. 
Single numbers, 50 cents, United States currency. 
Authors receive 100 copies of their papers free. 
Each section is ’séparately paged and indexed. 
Subscriptions should be sent to the Business Manager, Philippine 
Journal of Science, Manila, P. 1., or to any of the below-listed agents. 
FOREIGN AGENTS. 
THE MACMILLAN COMPANY, 64-66 Fifth Avenue, New York. 
Messrs. WM. WESLEY & SON, 28 Essex Street, Strand, London, W. C. . 
MARTINUS NIJHOFF, Nobelstraat 18, ’s Gravenhage, Holland. 
Messrs. MAYER & MULLER, Prinz Louis Ferdinandstrasse 2, Berlin, N. W. 
Messrs. KELLY & WALSH, LIMITED, 32 Raffles Place, Singapore, S. S. 
Messrs. A. M. & J. FERGUSON, 109 Baillie Street, Colombo, Ceylon. 
A limited number of unbound copies of previous volumes are available, 
which may be secured from the Business Manager at the following rates: 
Volume I, 1906 (not divided into sections), $5, United States currency; 
Supplement to Volume I, $2.50, United States currency; Volume I 
(without supplement), $3, United States currency; all later volumes at 
current subscription prices. 
(Copyrighted in the Philippine Islands, September, 1907. Entered at the post-office 
at Manila, P. 1., as second-class matter.) 
