GOVERNMENT FOREST WORK. 43 



and will secure information useful generally in the 

 industry concerned to a degree sufficient to justify 

 the project. Details regarding the terms on which 

 cooperative agreements will be made may be had on 

 application to the Forest Products Laboratory. 



Publications. 



To facilitate widespread diffusion of useful knowl- 

 edge relating to forests, forestry, and forest products, 

 to promote increased use of the National Forests, and 

 to obtain the fullest possible cooperation of the public 

 in their protection, the Forest Service has issued a 

 large number of publications. Its purpose is to make 

 available as promptly as possible, through publica- 

 tions, all new results of research work of value to 

 scientists, foresters, timberland owners, farmers, 

 lumbermen, or the woodworking and allied industries. 

 Some of these publications may be had free of charge. 

 Others are sold, usually at a low price, by the superin- 

 tendent of documents, Government Printing Office, 

 Washington, D. C, from whom price lists may be had 

 free on application. 



Photographs, Lantern Slides, and 

 Exhibits. 



The Forest Service has a considerable collection of 

 photographs showing forest conditions and illustrative 

 of forest utilization and forestry generally in all 

 parts of the United States. This collection is open 

 to the public for consultation. To the extent that 

 the limited facilities for producing photographic work 

 permit, photographic prints, lantern slides, and forest 

 maps are furnished for educational purposes, through 

 loan or sale. When sold the charge made is required 



