22 Forestry Quarterly. 



can not be successfully applied with this species. However, stands 

 are frequently found in even-aged groups and a modification of the 

 selection system by clear cutting in small groups when the age 

 classes reach maturity can be used. This is now being adopted on 

 the Deerlodge Forest, where clear cutting and leaving solid bodies 

 in wide strips is being used with pronounced success. 



Brush has fomerly been disposed of by lopping and scattering 

 the tops on some of the forests and by piling and burning during 

 the fall and winter on others. Winter burning in piles is now 

 successfully used on the Deerlodge Forest. Burning in numerous 

 piles scattered evenly over the clear cut areas should give the best 

 results since reproduction will be encouraged in them and not so 

 much on the areas between. This will preclude somewhat the 

 danger from overcrowding of seedlings with a resultant loss both 

 in height and diameter growth. 



Yield table investigations have shown that under advantageous 

 conditions, it is possible to have a normally stocked stand of 

 pure Lodgepole Pine of from 25,000 to 40,000 board feet per acre. 



Conclusions. 



1. Under an established forest cover, Lodgepole Pine does not 

 reproduce satisfactorily owing to its intolerance of shade and to 

 its requirement of a mineral seed bed for germination. 



2. Lodgepole Pine is a transitional type and its general presence 

 is due to widespread and frequent fires. 



3. Under ordinary conditions Lodgepole Pine should be favored 

 even as against Douglas Fir on account of its quick reproductive 

 possibilities, comparatively rapid growth, high yield per acre in 

 normally stocked stands, and ease of handling in the forest. 



4. In a region requiring all kinds of timber for mining and 

 smelter, as well as fencing material and saw timber, Lodgepole 

 Pine will give more satisfactory results than a mixture of it with 

 its common associates Douglas Fir and Engelmann Spruce, in 

 spite of the fact that these latter trees yield a wood of a higher 

 technical value. 



5. Clear cutting in groups and strips should be used rather than 

 the selection system with a diameter limit. An adaptation of the 

 selection system, could be used when numerous age classes are re- 



