284 



EORESTRY AND IRRIGATION 



June 



and character of the forests of the coun- 

 try are shown in different colors, as are 

 the location and extent of national and 

 state forest reserves. The forests man- 

 aged according to working plans pre- 

 pared by the Bureau and lands upon 

 which plantations have been instituted 

 under Bureau planting plans are also 

 indicated by special symbols. The sit- 

 uation of forest schools and other insti- 

 tutions which afford training in forest^ 

 is shown on the map. On another relief 

 map are shown the location of the pro- 

 posed Appalachian Forest Reserve, the 

 extent and character of forest and other 

 lands included, and the relation of the 

 reserve to the surrounding country. 



The outdoor exhibit of the Bureau is 

 on a tract of 2 y? acres situated about 300 

 yards southwest of the Forestry, Fish, 

 and Game Building. Here are displayed, 

 on and about a model farm, forest plan- 

 tations suited to every part of the United 

 States, practical forest nurseries, and 

 the best forms of 'windbreaks which are 

 so important for protection of the west- 

 ern farmers' crops and buildings. The 

 cooperative work of the Bureau in this 

 direction has been very successful, and 

 this exhibit is certain to attract much 

 interest among visitors from the regions 

 in which forest planting has proved its 

 usefulness, both for protection and as 

 a means of providing local supplies of 

 fuel and timber. During the past five 

 years plans for such planting have been 

 put in operation under the direction of 

 the Bureau of Forestry on 210 western 

 farms. The model farm represented 

 comprises a quarter of a section of prai- 

 rie land laid out on a scale one-tenth 

 the actual linear measurements, to show 

 a model plan for planting trees in a tree- 

 less country. Forty-seven forest blocks 

 surrounding this area illustrate pure for- 

 est plantations and various methods of 

 mixing tree species. In each of these 

 blocks the trees are given the actual in- 

 tervals recommended for planting in the 



different regions to which the illustra- 

 tions apply. Methods of growing nurs- 

 ery stock from cuttings, transplants, and 

 from seeds are fully illustrated, as are 

 the various styles of screens used for 

 shading coniferous tree seedlings. The 

 cultivation of four varieties of basket 

 willow is also an interesting feature of 

 the outdoor exhibit. Fields, farmsteads, 

 etc., are laid off with growing trees 

 planted along the fence lines and about 

 the home lot. 



In addition to the displays described, 

 the Bureau of Forestry will cooperate 

 with the Department of Mines and Met- 

 allurgy in a series of comparative tests 

 relating to the best methods of preserv- 

 ing timbers. For this purpose a com- 

 plete experimental treating plant, con- 

 sisting of a small cylinder, vacuum, and 

 pressure pumps and tanks for holding 

 the preservative solutions will be in op- 

 eration on the outdoor tract of the De- 

 partment of Mines and Metallurgy. 

 Other plants will show the application 

 of the Giussani and Riiping processes. 

 It is expected that one or more runs 

 will daily be made, when ties and tim- 

 bers from all parts of the United States 

 will be treated. Close to these experi- 

 mental plants will be found a cylinder 

 whose operation illustrates the best 

 methods of increasing the longevity of 

 fence posts. In a separate building near 

 the treating plants several testing ma- 

 chines will be operated by the Bureau 

 of Forestry for the purpose of deter- 

 mining the strength of different timbers 

 treated by various preservative processes. 



The greatest effort has been made in 

 the preparation of the government forest 

 exhibit to give as complete an exposi- 

 tion as possible of the purposes and work 

 of the Bureau. The result, it is hoped, 

 will be peculiarly interesting and in- 

 structive to that vast body of citizens 

 whose material welfare is so intimately 

 connected with the adoption of practi- 

 cal forestr}^. 



