44 GOVERNMENT FOREST WORK. 



by law to be cost plus 10 per cent. Prints are fur- 

 nished for use in illustrating material to be published 

 in newspapers or other periodicals, and for use in 

 book illustrations. Lantern slides and bromide en- 

 largements may be furnished for use in educational 

 work by lecturers and schools, and for exhibit pur- 

 poses. The object in every case is to diffuse informa- 

 tion concerning forestry. 



Advice and assistance is given authors and pub- 

 lishers of textbooks having to do with forests and 

 forestry, if desired. 



Traveling exhibits of the following material may 

 be borrowed for short periods of time without cost, 

 except for transportation, by schools, libraries, and 

 other educational institutions: 



1. Sets of mounted photographs illustrating the sub- 

 jects of forestry, nature study, farm woodlands, etc. 



2. Specimens of commercial wood species, with maps 

 and other information. 



3. Sets of lantern slides, accompanied by lecture 

 outlines, on general forestry, the work of the Forest 

 Service, and forestry in its relation to farm wood- 

 lands, nature study, geography, manual training, etc. 



The Forest Service maintains a considerable amount 

 of material for use in making exhibits at fairs and 

 expositions, both in cooperation with other bureaus 

 of the Government and independently. A number of 

 motion picture films, showing the work on the Na- 

 tional Forests, are available for loans. 



Particular attention is given to enlisting the inter- 

 est and cooperation of the public in the prevention 

 and control of forest fires and in the extension of the 

 practice of forestry by private owners, and wide use 

 of the National Forests is promoted by directing the 

 preparation and diffusion of information having this 

 end in view. 



