6 



Study of lumber prices A. H. PIERSON, Washington, D. C. 



Study of commercial processes of wood distillation W. C. GEER, Washington, 

 D. C. 



Study of chemical problems in wood utilization ERNEST BATEMAN, Washington, 

 D. C. ; A. L. DEAN, 93 Broad street, Boston, Mass. 



Studies in the heat conductivity of wood FREDERICK DUNLAP, Washington, D. C. 



OFFICE OF WOOD PRESERVATION. 



CAUL G. CRAWFORD, Chief (in the Field) . 

 W. F. SHERFESEE, Acting Chief. 



California 



Experiments in seasoning and treating telephone and other poles for electric 

 wires, in cooperation with electric companies in southern California W. R. 

 WHEATON, Hotel Lillie, Los Angeles; assistant, 0. T. SWAN. 

 Montana 



The laying of an experimental track with western tamarack and Douglas fir to 

 test the value of seasoning and treating, and of various device^ for reducing the 

 mechanical wear of the rails; in cooperation with the Northern Pacific Railway 

 Company H. B. EASTMAN, McGowan Hotel, Plains; assistant, W. H. KEMPFER. 

 Pennsylvania 



Experiments in treating mine timbers, in cooperation with the Philadelphia and 

 Reading Coal and Iron Company JOHN M. NELSON, Jr., care Philadelphia and 

 Reading Coal and Iron Company, Pottsville. 

 General Studies 



Study of preservative treatment of piling C. S. SMITH, Washington, D. C. 



Study of creosote production C. L. HILL, Washington, D. C. 



Preparation of report on the experimental treatment of chestnut telephone poles 

 H. F. WEISS, Washington, D. C. 



Correlation of data on the preservative treatment of American and foreign woods 

 M. C. JENSEN, Washington, D. C. 



OFFICE OF PUBLICATION. 



FINDLEY BURNS, Chief. 



Articles, T. CLEVELAND, Jr. 

 Review, FINDLEY BURNS. 

 Printing, QUINCY R. CRAFT. 

 Distribution, BRISTOW ADAMS. 



iv JTJ:IV.E:. 



The Use Book: Regulations and Instructions for the Use of the 

 National Forests (1907). 



The Use of the National Forests. 



Manual. Instructions for Making Forest Surveys and Maps. 



Circular 21 (Fifth Revision). Practical Assistance to Farmers, Lum- 

 bermen, and Other Owners of Forest Lands. 



Circular 36 (Third Revision). The Forest Service: What It Is, and 

 How It Deals with Forest Problems. 



Circular 99. Suggestions for Forest Planting on the Semi-Arid 

 Plains. 



Circular 100. Suggestions for Forest Planting in the Northeastern 

 and Lake States. 



