200 FORMATION OF MIXED WOODS. 



silver fir, spruce, hornbeam, sweet chestnut and hazel. This 

 underpUinting had best be done in the case of larch at the age 

 of 10 to 20 years, of Scotch pine at 20 to 40 years, and of oak 

 at 30 to 50 3'ears or even later. 



(I. Mixed Coppiro ivilli SfnniJnnls. 



This system offers, in the regeneration of the over wood, the 

 greatest latitude for the protection of threatened species, 

 whether in single trees or in groups. Although some of the 

 standards may regenerate themselves naturally, the gieater 

 part are produced by planting strong plants where mature 

 standards have been removed. 



