5S 



motor-driven vehicle, such as a motor cycle or an automobile, is used by a forest 

 officer in lieu of saddle horses or other animals in the performance of his official duties, 

 gasoline and oil for motor cycles or automobiles so used will be furnished in whole 

 or in part, as may be deemed equitable by the Forester. 



Secretary Letters Recommending Eliminations and Release- 

 Secretary letters recommending the release of lands from temporary withdrawal 

 should, in all cases, contain a brief, specific statement of the reason why the land was 

 not desired for National Forest purposes. In all Secretary letters referring to elimina- 

 tions or releases, a definite statement should also be inserted as to whether examina- 

 tion by forest officers discloses the fact that the areas embrace valuable power sites. 

 If such information can not be given, the letter should so state. (See OB letter Aug. 

 8, 1911.) 



Proclamation Diagrams and Topographic Data- 

 After September 15, 1911, all. proclamation diagrams will be made in the Washington 

 office. When time permits, advance blue prints will be submitted to the district 

 forester for comment and correction before being lithographed. It is not expected 

 that the drafting work in the district offices will be reduced by this change in pro- 

 cedure. By being relieved of this work it is hoped the district geographers will be 

 able to extend additional assistance to supervisors in the preparation of corrected 

 atlas sheets and the collection of new data, which are to be submitted annually. It 

 is desired that the district forester submit, with his recommendations for boundary 

 changes, any new data not previously forwarded to Washington, in order that they 

 may be incorporated in the new diagram. (See OB letter Aug. 16, 1911.) 

 New Photographic Notebook- 

 After October 15 a new photographic notebook will be issued with films, or upon 

 requisition, and will be expendable property. Each book will contain the instruc- 

 tions for photographic work in the field, districts, and at Washington. There will 

 be six Forms 166, each for the record of an exposure, and six duplicate detachable 

 forms, on which carbon records of the exposures may be made and retained by the 

 author. 

 Forest Service Paper Scales 



The property clerk will issue on requisition, as expendable property, one or more 

 sheets of bristol board, each engraved with four scales made from copper plates. 

 These are 1 inch, 2 inches, 4 inches, and 8 inches to the mile. 

 Forest Service Standard Level Rod 

 The following has been adopted for the Forest Service: 



A self-reading "Philadelphia" rod, two-piece, 7 feet, sliding out to 13 feet, hard- 

 wood, divided by red figures into feet, divided by black figures and lines into tenths, 

 and by shorter black lines into half- tenths and hundredths, round target with 

 vernier reading to thousandths, and with a screw clamp or lever clamp, as desired. 

 This description applies to the rods known as Dietzgen No. 5807, Keurfel & Esser 

 No. 6256, and Gurley No. 500. 

 Forest Service Standard Stadia Pattern 

 The following has been adopted: 



Stadia rods will not be furnished, but will be made in the field when required, as 

 in the Geological Survey. The standard pattern will be the same as that of the 



