AY here necessary, because of important market or topographic 

 considerations, the Forest may be divided into areas 

 B8t< each of which will be managed with the idea of sus- 

 tained yield. If necessary to assist in regulating the cut, a subdivision 

 of the above areas may be made; this should be on t he basis of logging 

 units or groups of logging units, the boundaries depending entirely 

 upon topography. Unnecessary divisions will not be made 1 , si nee 

 they complicate administration. Where possible the lines of admin- 

 istrative subdivisions and those for the technical management of t he 

 Forest will be coordinated. 



Maps should follow the Atlas legends as far as practicable. They 

 will be prepared as indicated in the instructions for 

 each part of the plan and in addition where nece- 

 to make the plan clear or where their use makes it possible to reduce 

 description. 



Final responsibility in the preparation of all forest plans rests with 



the supervisor. He should, in submitting the plan 



ifns P nsibility f r ^ or approval? transmit any recommendations of the 



officer in direct charge of its preparation which differ 



materially from the plan as submitted. 



Since the completion of any plan is but the beginning of systematic 

 management, every effort should be made by the 

 f lo ca l f r ce, with or without assistance from the dis- 

 trict forester, to improve plans which have been pre- 

 pared and to obtain the additional data needed for more efficient 

 administration. 



Copies of all preliminary or working plan data, except maps, will 

 be filed in separate folders, or, if this is not feasible, 

 cross references will be inserted. 



PRELIMINARY PLANS. 



A preliminary plan should be prepared as soon as practicable on 

 each Forest from the data now available. The compilation of such 

 data in the form of a definite plan of management will systematize 

 and strengthen the administration of the Forest and furnish a basis 

 for further extension and improvement. The following points should 

 be covered: 



Under " General administration" should be given: 



1. The Forest force, based upon the men required to 

 tration ral adminis " transact economically the business of the Forest and 

 furnish adequate protection during the fire season. 



2. Division of the Forest into administrative and patrol districts 

 to be shown on a map. 



3. A record, by classes of past receipts and expenditures and an 

 estimate of future receipts and expenditures. 



Under " Silvicultural management" should be given: 



1. Divisions and subdivisions, if any, with reasons. 

 ag S eSt. tural man " 2 - Approximate estimates of timber bv convenient, 



technical, administrative, or legal subdivisions. 



3. The silvicultural systems which should be used, by types, and 



by divisions if modification of the system on different divisions is 



necessary. Principles to govern marking drawn from the best 



silvical data available. The object of management for the Forest, as 



