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projects under way; and prepares special articles upon the subject of 

 forestry in general and the work of the Service in particular. 



The section of education is charged with the broad work of bring- 

 ing home the lessons of forestry through every available educational 

 channel, such as lectures and addresses, school instruction, and the 

 propaganda of civic, industrial, and other associations. 



The section of printing sees through the press all the forms and 

 manuscripts printed by the Service, prepares printing requests, and 

 keeps all necessary Service record of printing work. 



DENDROIiOGY. 



The work of the office of dendrology includes dendrological studies 

 proper, direction of the Service's forest library and forest photograph 

 collection, and charge of the forest exhibits prepared by the Service. 



A leading branch of the dendrological studies is the making of an 

 accurate forest map of the distribution of tree species in the United 

 States, to show the extent, composition and economic possibilities of 

 our forest resources. Others of these studies concern the forests of 

 the "Big Thicket" region of southern Texas, important indigenous 

 and exotic acacias growing in the United States, eucalypts which grow 

 here or which may be profitably introduced, new and little known pines 

 of California, and the present and probable future supply of western 

 tanbark oak and the various barks used as adulterants. The Bureau 

 of Chemistry is cooperating in the tanbark study by determining the 

 tannin contents of the barks. Included also is a study of basket wil- 

 lows. Experimental holts are established on the Arling'ton Experi- 

 mental Farm, near Washington, D. C. Attention is given especially 

 to the conditions under which high-grade basket rods may be pro- 

 duced. Approved basket willow cuttings are distributed free to 

 applicants interested in willow culture. 



An improved sj^stem of turpentining, introduced by this office among 

 turpentine operators, is described in Bulletin 40 and Circular 34 of the 

 Forest Service. The system not only conserves the life of the trees 

 much more than any other previous method, but also gives a larger 

 and better yield. Experiments now in progress seek still further 

 saving of the trees by reducing the extent and depth of the wound in 

 chipping. 



A series of important publications in course of preparation by this 

 office will describe and illustrate the tree species of the different regions 

 of the United States. The first of the bulletins when ready will 

 embrace the trees of the Pacific coast, and the second, those of the 

 Rocky Mountain States. One special use of these tree books will be 

 the aid which they will give forest officers on reserves in identifying 

 species and in acquainting themselves with their habits, growth, dis- 

 tribution, and other important facts. The third and fourth of the tree 



