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BITTER ROOT FOREST RESERVE 



doing it by triangulation presented itself, and legislation has been 

 proposed granting authority to the Geological Survey to locate 

 township corners in the forest reserves by this method. 



The area of the Bitter Root Forest Reserve is about 6,500 square 

 miles, about one-sixth being in Montana and the remaining por- 

 tion in Idaho, the crest of the Bitter Root mountains forming 

 the boundary line between the two States in this locality, and 

 the problem presented itself as to how a satisfactory map, for 

 the purpose of illustrating the forestry features, could be pre- 

 pared in the comparatively short field season that the weather 



YELLOW PINE GKOVE 



conditions made possible. A reconnaissance map was decided 

 upon, and the assistant, Mr J. B. Lippincott, who executed the 

 triangulation, was instructed to take with him a light plane-table 

 outfit for the purpose of making such a map. The map pre- 

 pared does not lay claim to absolute accuracy, but it is consid- 

 ered sufficiently so to answer the purpose for which it was made — 

 that is, to show the drainage system, the general character of 

 the forests, etc. Contours were sketched to show the relative 

 differences of elevation and slopes, and such elevations as were 

 mathematically determined are given in figures. Also on the 

 maps are indicated all the trails and such wagon roads as exist. Mr 

 Lippincott was also instructed to secure numerous j)hotographs 

 and to obtain all possible information relating to the forestry, the 



