320 TIMBER TREES 



posts ; black walnut and wild black cherry for furniture. 

 But none of them has the all-round utility of the white pine. 

 Still another principle of consideration is the value of a 

 mixed growth of trees in the wood lot over what is known 

 as a pure stand, or the growth of one species of timber. A 

 grove of trees of different kinds affords a wider range of 

 usefulness than a grove of any one species, and it is less 



A RAIL FENCE. 

 A common sight when timber was plentiful. 



liable to suffer complete destruction from insect depreda- 

 tion. A pure stand of hickory is liable any summer to be 

 destroyed by the bark borer; and the ravages of the chest- 

 nut blight are only too well known in the east. 



Certain trees, too, like the wild black cherry, can endure 

 shade better than the white pine. The white pine and the 

 wild black cherry together, therefore, produce a better 

 growth than either alone. 



235. The question whether to plant seeds or seedlings de- 

 pends on the kind of tree and the relative costs of seeds 



