CONTENTS 



Page. 



Object of the study 5 



The type 5 



Extent and composition 5 



Probable history 6 



Average stand 7 



Economic importance 9 



Future composition 9 



Comparative growth of western yellow pine, Douglas fir, and blue spruce 10 



Diameter 11 



Height 13 



Volume 14 



Comparative form factors 17 



Comparative increment 19 



Comparative growth of western yellow pine in pure and in composite stands 21 



Effect of cutting upon reproduction 23 



Reproduction Plot 1 24 



Reproduction Plot 2 25 



Reproduction Plot 3 26 



Loss in seedlings 27 



Factors which affect loss 27 



Management 28 



Method of cutting 28 



Rotation 30 



Western yellow pine 31 



Douglas fir 31 



Blue spruce 31 



Brush disposal 32 



Fire "..' 32 



Grazing , 32 



3 



