Beginning with Volume V, a new section, "Section D, Ethnology, Anthropology, and Gen- 

 eral Biology," will be added to the Journal. The price for the whole series to subscribers for 

 igio will be as heretofore, $5 United States currency. Single subscriptions to Section D will 

 be $2 United States currency. 



Beginning with 1911, the price of the entire Journal will be increased to $7 United States 

 currency. Section D will appear as often as material is available. 



CONTENTS. 



Page. 



FREER, PAUL C. The Study of Manila Copal 171 



FOXWORTHY, F. W. The Almaciga Tree: Agathis 



Alba (Lam.) 173 



RICHMOND, GEORGE F. Manila Copal 177 



BROOKS, BENJAMIN T. The Destructive Distilla- 

 tion of Manila Copal 203 



BROOKS, BENJAMIN T. The Oxidation of Manila 



Copal by the Air 219 



BROOKS, BENJAMIN T. The Oleoresins of Pinus In- 



sularis Endl. 229 



The "Philippine Journal of Science" is issued as follows: 



Section A, Chemical and Geological Sciences and the Industries, $2 United States 

 ourrency per year. 



Section B, Medical Sciences, $3 United States currency per year. 



Section C, Botany, $2 United States currency per year. 



Section B, Ethnology, Anthropology, and General Biology, $2 United States cur- 

 rency per year. 



The entire "Journal," $5 United States currency for Volumes II, TIT, IV, and V. There- 

 after, $7 United States currenoy per year. 



Authors receive 100 copies of their papers free. 



Subscriptions should be sent to the Business Manager, Philippine Journal of Scienoe, 

 Bureau of Soienoe, Manila, P. I., or to any of the agents listed below. Please give order 

 number. 



FOREIGN AGENTS. 



The Maomillan Company, 64-66 Fifth Avenue, New York City, U. S. A. 



Messrs. Wm. Wesley & Son, 28 Essex Street, Strand, London, "W. C, England. 



Mr. Martinus Nijhoff, Nobelstraat 18, The Hague, Holland. 



Messrs. Mayer & Muller, Prinz Louis Ferdinandstrasse 2, Berlin, N. W., Germany. 



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A limited number of unbound copies of previous volumes are 

 available, which may be secured from the Business Manager, 

 Philippine Journal of Science, Manila, P. I., at the following 

 rates: Volume I, 1906 (not divided into sections), $10 United 

 States currency; Supplement to Volume I, $3.50 United States 

 currency; Volume I (without supplement), $6.50 United States 

 currency; all later volumes at current subscription prices. 



