496 JOURNAL OF FORESTRY 



The result of the whole idea is that there is indicated to the adminis- 

 trative officers what localities need now to be specially concentrated on 

 to develop sales, and where the making of sales is to be somewhat con- 

 trolled. The distribution of 'the established cut between the two blocks 

 of each working circle is favored where other considerations permit. 

 A distribution of cutting over the forest is being gradually approached, 

 yet without conflicting with or disrupting appreciably the normal prac- 

 tical demands, and at the same time meeting as before the requirements 

 for a continuous supply for mills and for general and local consumers. 



The foregoing discussions cover some of the principles on which 

 regulation on the Coeur d'AIene National Forest is based. As a matter 

 of possible interest there are supplementarily presented some aspects of 

 the more detailed portions of the preliminary regulation figures. The 

 development of the forest silvicultural working plan, in which a number 

 of peculiar and interesting features will have to be considered, is still 

 to be carried on. At a later date there will be presented a more detailed 

 discussion of the work so far done and that still to be accomplished. 



The regulation figures themselves are necessarily rough, but are 

 considered quite sufficient for prehminary data. The basic data are 

 partially the result of extensive timber survey work. Some of the in- 

 tensive survey work also, accomplished in the early development of 

 reconnaissance, could have been better. Generally, the blocks now ac- 

 cessible and being appreciably exploited are covered by the intensive 

 work. 



A tabulation showing such basic data as is available as to distribution 

 of age classes, follows : There is also given a separate table showing 

 what timber estimates are available. 



Besides these data, from which all yield and increment figures were 

 obtained, reference was made to more intensively prepared yield tables 

 for the purpose of checking as to rotation age and yield. For the 

 purpose of the prehminary plan, however, the empirical results obtained 

 were used. 



Timber holdings on alienated lands in and near the forest also add a 

 variable to the rate of possible delivery of materials to local operating 

 communities. There are no probable regularities as to the rate of 

 cutting of these that can be figured on, and, furthermore, at least under 

 present conditions, no control over these could be exerted properly to 

 distribute the cutting according to the Government's ideals. The in- 

 fluence of alienated timber bodies on the forest communities has there- 



