66 



PIUXCIPLKS OF AMRRICAN FOKESTKY. 



The size of the openings will depend here as in the 

 strip method on the species grown and natural con- 

 ditions. Generally the first openings will be from one- 

 fourth to one-half acre or more, and the strips taken 



I'lc. 10 — Diagram illustrating tho systoni followed in the group 

 method of cutting. Cuttings aro begun at points marked 1, and 

 are graduallv eNtended bv successive cuttings as indicated by 

 l-"igs. 2, 3, 4," and 5. After Schlich. 



around them should in width not greatly exceed the 

 height of the trees in the strips next to be cut. Succes- 

 sive strips should be cut only when the previous strips 

 had become well stocked with trees, i.e. when regenera- 

 tion i.s accomplished. 



