38 THE CLEARCUTTING METHOD 



It requires two or more operations to remove the timber in 

 a given stand. In the first cutting patches are selected 

 which for some reason should be cut before the rest of the 

 stand. A patch of injured trees or an opening in which 

 seedlings are already springing up and which need more 



= Timber injured by Insects 

 'Zf = Advance Reproduction 



Q=i = Timber injured by Wind 



*i^= Swampy Ground subject to Windfall 



FIG. ii. 



Clearcutting in patches. Areas marked " 1 " are cut clear in the first opera- 

 tion. Their location is based on the condition of the timber as respects injury 

 by wind or insects, presence of advance growth or location on swampy ground. 

 In this illustration 26 per cent of the area is cleared in the first cutting. 



light may determine the location of the first cutting. (See 

 Fig. n.) Timber on swampy ground or on rocky knolls which 

 if left exposed by adjacent cutting might be wind thrown may 



