154 Forestry Quarterly. 



admit. Here should be included type, stand, reproduction, plant- 

 ing and timber sale maps. They should be prepared on a base 

 map showing topography. The type map may show the aliena- 

 tions. Others need not. All m.aps (or part of them only) may 

 show logging units, inaccessible areas, protection forests and such 

 other necessary data. 



In addition to these maps, topographic township plats, section 

 sheets (reconnaissance), and logging unit descriptions will be 

 maintained. These descriptions will be detailed and comprise all 

 forest description data necessary for timber sale work. They 

 will be the most detailed descriptions of the whole plan. The 

 description of each logging unit should be a separate report. 



4. Appendix. This will comprise, in separate folders in the 

 files, information of permanent value. From year to year this 

 information should be built up. It need not necessarily be com- 

 piled, although all information on a certain subject should be 

 placed in the same folder for compilation in the future. Data on 

 silvics, lumbering, costs, scaling, marking, brush disposal, plant- 

 ing, insect control, etc., etc., will be included here. 



5. The preliminary plan. In the past, preliminary plans have 

 been considered by some as mere inventories of resources. They 

 should be more than this, however. This inventory under the 

 plan here proposed will come under the card records and the ap- 

 pendix file. The preliminary plan on the other hand will be a 

 true plan of management for the forest. 



The fundamental basis for the preliminary plan is that the for- 

 est is the largest unit for the plan, that the plan should not be for 

 over 10 years, that it shall be made by a specialist, and that it 

 should be revised annually. 



It has been found that, unless the forest is taken as the largest 

 unit for a plan, so many difficulties arise that the plan is not prac- 

 tical. Separate plans may, however, be made for parts of a 

 forest if they are distinct units, which should be handled sepa- 

 rately. The continuity of the stand of timber generally deter- 

 mines this. 



Ordinarily, plans have covered a full rotation in a general way 

 and a period of from 10 to 20 years very definitely ; that is, plans 

 have been attempted for a complete rotation. The writer con- 

 siders plans for policies, cuttings, etc., for a period of more than 



