SILVICULTURAL SYSTEMS. 



37 



others of greater value, or which are themselves be- 

 coming less valuable from year to year; and seed trees 

 of undesirable species likely to reproduce themselves, 

 if reproduction of more useful kind is well assured. 

 The great majority of woodlots need such cutting, and 

 when they do, whatever wood is taken from them should 

 be cut in this way. 



