Practical Sylviculture 



147 



in clearing 

 woodlots of 

 dead mate- 

 rial, either on 

 the ground or 

 on the stump, 

 of removing 

 brush, small 

 \\orthlesstrees, 

 or removing a 

 part of the 

 regular stand 

 so as to im- 

 prove the de- 

 velopment and 

 the quality of 

 the- remaining 

 trees. An im- 

 p ro vemen t 

 thinning must 

 never be VTV 

 heavy, since 

 the purpose is 

 to benefit the 

 trees that are 

 to make t In- 

 final crop, and 

 at all times 



there should !>< sufficient density to the canopy to shade 

 out any grasses that would be sure to come in if Un- 

 crowns were grouped or unevenly distributed. 



FIG. 42. Woodlot in nood of an improv 

 cutting. 



