176 THINNING. 



now solved by the discovery that the roots of such 

 stools have become grafted to other roots of growing 

 trees in the neighbourhood, termed subterraneous 

 grafting. 



" The most valuable crop of oak timber I ever saw," 

 says Mr J. Stinning, an extensive timber merchant in 

 Sussex, " was upon the Duke of Devonshire's property 

 in Devonshire, where the trees stood from 6 to 8 feet 

 apart." The best we ever saw was a few acres of 

 natural Scots pine forest on Eothiemurchus estate. 

 Strathspey, where the trees stood from 2 to 15 feet 

 apart, and a few groups of oak on the estate of Pens- 

 rock in Sussex, on which estate we saw 100 trees 

 sold by auction for £800. 



