FOREST SERVICE. 549 



There were added to libraries maintained in supervisors' and dis- 

 trict offices, the Forest Products Laboratory, and the Office of Wood 

 Utilization at Chicago 2,894 books and pamphlets, bringing the total 

 number of volumes in these libraries up to '20,827. The amount spent 

 for tiie purchase of books for field libraries during the j'ear was 

 $2,000. 



A bibliography of books on forestry in the Department of Agri- 

 culture, prepared by the department library and classified by the 

 Forest Service, was issued during the year. 



There are now 29,133 classified and tabulated photographs in the 

 collection, 4,053 of which were added during the year. 



More than 3,000 microsections of native and foreign species were 

 added to the collection, which is used in the study of the structural 

 characters of wood and in the identification of wood samples. About 

 6,500 microsections are now available. 



The reference collection of native and foreign woods was enlarged 

 during the year by the addition of 750 specimens, of which more 

 than 150 were commercial woods from Panama, secured through co- 

 operation with the Bureau of Plant Industry. The entire collection 

 now includes about G.800 specimens. About 400 specimens were 

 added to the forest herbarium, which now contains 5,400 reference 

 specimens, and approximately 1.000 tree-range records were added 

 to those on file. Sixteen new maps, showing the distribution of dif- 

 ferent tree species, were prej^ared. 



Members of the Forest Service delivered 185 public addres,ses dur- 

 ing the year, mainly in response to requests from educational institu- 

 tions and associations of lumbermen or lumber manufacturers. In 

 addition, about 50 informal addresses were made to stockmen and 

 other users of the national forests. Exhibits were made at the 

 Spokane Interstate Fair, Spokane, Wash.; Oregon State Fair, Salem, 

 Oreg. ; Walla Walla County Fair, Walla Walla, Wash. ; Arkansas- 

 Oklahoma Fair, Hot Springs, Ark. ; Southern Commercial Congress 

 Exhibit, Washington, D. C. ; Appalachian Exposition, Knoxville, 

 Tenn. ; National Land and Irrigation Exposition, Pittsburgh, Pa.; 

 Maryland Week Exposition, Baltimore, Md. ; Insular Fair, San Juan, 

 P. R. ; Pacific Land and Products Exposition, Los Angeles, Cal.; 

 Washington Academy of Science Exhibit, Washington, D. C. ; and 

 Boy Scouts' Exhibit, New York City. One of these exhibits was sup- 

 plemonlcd by explanatory lectures. All expenses for transportation 

 and installation of material and for travel and subsistence involved 

 in making the exhibits was borne by the exposition authorities, except 

 in the case of the National Land and Irrigation Exposition, which 

 went into bankruptcy, making it necessary for the Forest Service to 

 pay a portion of the cost of securing the return of its material to 

 Washington. The greater part of the matter exhibited, consisting of 

 bromide enlargements, transparencies, maps, and charts, was material 

 left on hand from previous expositions. 



WORK FOR THE ENSUING YEAR. 



Work for the ensuing year will follow in the main the same lines as 

 that of the past year. The scope of many projects will be broadened, 

 certain closely related lines of work will be taken up, and every elVort 

 will be made to bring to completion such work as can be accomplished 

 in a comparatively short time. So many of the investigations and 



