SILYICULTUKAL SYSTEMS. 



37 



others of greater value, or which are themselves be- 

 comino- less vahiable from vear to vear: and seed trees 

 of undesirable species likel}' to reproduce themselves, 

 if reproduction of more useful kind is well assured. 

 The great majoritvof woodlots need such cutting, and 

 when they do, whatever wood is taken from them should 

 be cut in this wav. 



