26 



STRUCTURE OF VESSELS. 



woiild form agreeable diversity from the monotonous 

 irregularity of the forest, and be highly pictiu'esque. 



Were close triple rows planted with v^ide glades 

 between, having spruce, larch, biich, or other trees 

 of more rapid growth than the oak in the mid row, 

 and oak in the side rows, the greater part of the oak 

 would be tbro^Mi out into fine cm'ves by the over- 

 shadowing top of the superior tree. After the oak 

 had received a sufficient side bias, the central row, 

 wliich of those kinds comes soon to be of value, might 

 be removed. 



The easiest way to procure good oak knees is to 

 look out in hedge-row and open forest foiy^lants which 

 divide into two or four leaders, from ^ to 10 feet 

 above ground ; and should the leaders not diverge 

 sufficiently, to train them as horizontally as possible 

 for several feet, by rods stretching across the top, or 

 by fixing them down by stakes ; see follomng figures. 

 Figs, a, f, are di'a^m to a smaller scale than e, d; 

 of com'se, a stem, after dividing, never extends in 

 length below the division, 



