142 INTERMEDIATE CUTTINGS 



made under the existing conditions for marketing forest 

 products. 



The principles of intermediate cuttings apply to stands 

 reproduced under any of the standard methods of repro- 

 duction. 



Classification of Intermediate Cuttings. — The classifica- 

 tion of intermediate cuttings is a matter upon which com- 

 plete agreement is lacking. As given below, the classifica- 

 tion varies somewhat from the one in" Forest Terminology" 

 which can be condensed to advantage. See Appendix. 



Classification of Intermediate Cuttings 



Cleaning. — A cutting made in a young stand, not past 

 the sapling stage, for the purpose of freeing the trees from 

 other individuals of similar age but of imdesirable form or 

 species which are overtopping or are likely to overtop the 

 former trees. The terms " assistance cutting," ^ " disengage- 

 ment cutting,"^ "release cutting" and "weeding,"* are 

 synon5Tnous. 



Liberation Cutting. — A cutting made in an immature 

 stand for the purpose of freeing the young growth from older 

 individuals (wolf trees) which are overtopping. 



Thinning. — A cutting made in an immature stand for the 

 purpose of increasing the rate of growth of the trees that 

 remain and the total production of the stand. 



Improvement Cutting. — A cutting made in a stand past 

 the sapling stage for the purpose of improving the composition 

 and character by removing trees of undesirable species, form 

 and condition. 



Salvage Cutting. — A cutting made for the purpose of 

 removing trees killed or damaged by various injurious agen- 

 cies, of which fungi, insects, and fire are the most serious. 



