XV111 LIST OK ILLUSTRATIONS 



FIG. . PAGE 



16. A Group of Balsam Firs Marked for Cutting in a 



Selection Forest. Their Removal will Favor 

 the More Valuable Spruce. Arapahoe National 

 Forest, Colorado 00 



17. Trees Designated for Cutting under the Selection 



System. Arapahoe National Forest, Colorado.. 73 



1(S. A Stand in the Adirondacks in which there has been 



a Selection Cutting 70 



19. A Stand of Douglas Fir and Cedar of Great Size and 



Age. A System of Clear-Cutting is Required. 

 Washington 84 



20. A Heavy Douglas Fir Stand in Washington, Calling 



for One of the Systems of Clear-Cutting 91 



21. A Dense Stand of Tall Lodgepole Pines, Calling for 



some System of Clear-Cutting on Account of the 

 Danger from Windfall 99 



22. Application of a System of Clear-Cutting with Large 



Blocks of Timber Reserved for Seed. A Quar- 

 ter Section in the Kaniksu National Forest, 

 Idaho 105 



2S. Thrifty Standards Reserved to Grow through a Sec- 

 ond Rotation. Scotch Pine in Furope 109 



24. Reserving Scattered Trees to Distribute Seed after 



Lumbering. Minnesota National Forest 109 



25. Groups of Trees left to Distribute Seed over Clear- 



ings. Lodgepole Pine. Deer Lodge National 

 Forest, Montana 11 



26. A Stand of Western Yellow Pine, with Scattered 



Old Trees, Showing the Results which May 

 be Obtained by Reserving the Thrifty Standards 

 for Growth through a Second Rotation. lilack 

 Hills, South Dakota 122 



