177 



CHAPTER IX. 



THINNING MIXED PLANTATIONS. 



THE late Mr Eobert E. Brown, son of the late Dr 

 James Brown, author of ' The Forester,' says : " I have 

 found that as a rule woods may be calculated to pay a 

 proprietor at the end of fifty years fully three times 

 the amount which would have been received from the 

 same ground had it been left as pasture or any other 

 agricultural purpose ; and in order to illustrate this, 

 I shall give a few examples of what I have taken from 

 plantations at their different ages : 



Rate per tree. 



s. cl. s. d. 



On the estate of D , in Scotland, I take 



a first thinning, at twelve years old, from 



one acre of mixed larch and Scots pine, 00^ 192 



Second thinning, at sixteen years old, 500 



trees, 02 434 



Third thinning, at twenty years old, 370 



trees, 06 950 



Fourth thinning, at twenty-five years old, 



300 trees, 12 17 10 



Fifth thinning, at thirty years old, 250 



trees, 24 29 3 4 



Sixth thinning, at thirty-five years old, 160 



trees, 30 24 



Seventh thinning, at forty years old, 120 



trees, 40 24 



Carryforward, . . 109 10 10 

 M 



