426 Forestry Quarterly. 



built in such a way as to pass by this area on the side furthest 

 from its present market. Manifestly, certain logging units of 

 this present working circle will then become tributary to the 

 railroad. In this supposed case it should be possible noiv to 

 foresee with greater or less exactitude those larger logging 

 units which will become tributary to the future railroad. Hence 

 the regulations of cut should be drawn up now for the entire 

 working circle tributary to the present market, and also for 

 the working circle minus the logging units which will be cut off 

 by the possible railroad. 



Inaccessible areas will frequently cause difficulty in making 

 working plans. For it will be possible on many forests to cover 

 only the accessible portions with a reconnaissance sufficiently 

 thorough to obtain detailed data; while the only information 

 with regard to the inaccessible areas will be very rough esti- 

 mates and crude, often inaccurate maps. But in drawing up the 

 working plan resulting from this reconnaissance the inaccessible 

 areas should also be included. Each inaccessible part of the 

 forest should be placed in its proper working circle according to 

 its geographical situation and the market to which it is tribu- 

 tary; inaccessible areas should not be allotted haphazard to 

 various working circles. The plan can, therefore, provide for 

 the accessible part of the working circle in detail, and outline 

 a rough policy from the best available estimates, maps and silvi- 

 cultural information, for the inaccessible part. For example, 

 if the inaccessible portion of the working circle is 80 per cent, 

 of the total working circle i. e. (contains 80 per cent, of the 

 timber), and the rotation is one hundred years, and further if 

 it is probable that the inaccessible timber will commence to be 

 opened up within at most twenty years, the present working 

 plan could provide in detail for the cut during the next twenty 

 years and give a rough outline of policy for the remaining eighty 

 years. Within ten or twenty years it will undoubtedly be neces- 

 sary to revise the plan (revisions are generally made every ten 

 years in Germany), and it will then be possible to secure detailed 

 data on at least a part of what is now inaccessible. 



In making his divisions of the forest for purposes of regulat- 

 ing the cut the working plans officer should always consider 

 administrative divisions (ranger districts), fire protective units, 

 and grazing units, and should make a very strong effort to co- 



