BUREAU OF FORESTRY. 127 



Carolina Interstate and West Indian Exposition. The only new fea- 

 ture of the exhibit at Charleston was the addition of 70 samples of 

 commercial woods from the Philippine Islands. At the close of the 

 Charleston Exposition one-half of the exhibit was installed at the New 

 England Association of Arts and Crafts, at Providence, R. I. , where 

 it now is; the remainder of the exhibit was boxed and shipped to 

 Washington, D. C. 



IDENTIFICATION OF FOREST SPECIMENS. 



Much time was consumed in the division of forest investigation in 

 identifying specimens of native and exotic trees and samples of com- 

 mercial woods. An important service was rendered to the Tennessee 

 and Virginia Boundary Commission by the identification of the spe- 

 cies of witness trees and the determination of the ages of blaze marks 

 upon them. 



EXPENDITURES. 



The total expenditures of the division of forest investigation dur- 

 ing the fiscal year were $55,468.84, or 29.9 per cent of the total appro- 

 priation of the Bureau. 



WORK FOR THE ENSUING YEAR. 

 DENDROLOGY. 



Monographic studies of the White and Black Oaks and the osier 

 willows will be continued, and studies will be begun of the Sugar 

 Maple and the Western Cottonwood. Investigations of the forest 

 floras of important regions will continue. 



FOREST DISTRIBUTION, 



A study of the character, extent, and value of forests in the best- 

 timbered counties of Maryland will be continued in cooperation with 

 the Maryland State geological survey. Studies of forest conditions 

 and forest resources will be carried on in Vermont, Michigan, Ohio, 

 Kentucky, Iowa, Montana, and California. Special forest problems 

 concerning types of forests in Texas, Arkansas, and Missouri will also 

 be taken up. 



STUDY OF FOREST PRODUCTS. 



Dendro-chemiccd investigations. — Chemical investigations of woods, 

 barks, and gums to determine their production of tan extracts and of 

 the adaptation of untried pulp woods for the manufacture of paper 

 pulp will be continued in cooperation with the Bureau of Chemistry. 

 The lines of this work will be considerably broadened to include 

 examiuations of new material and the manufacture and testing of 

 papers made from untried woods. 



Removal of resin from pvlp woods. — In connection with the investi- 

 gation of pulp woods, experiments will be continued to devise a 

 method of cheaply removing resin from fir woods in order to facilitate 

 their reduction by grinding to pulp. Similar experiments will be made 

 also with inferior pine woods, which, if freed from resin, can be used 

 for certain grades of paper. 



