48 



THE WHITE PINE. 



It may be of interest to record more espei'lally the data of a small clnmp of yoniig White 

 Pine spniii-j up naturally on an abandoned (ield of less than three lourths of an acre in extent, 

 situated near Farminf^ton, N. II., which its owner (Mr. J. I). Lyman, of Exeter) had from time to 

 time thinned out for the last twenty-two years, with a view of accelerating the growth of the 

 trees. Unfortunately, no record of previous couditions and fre(iuency and extent of operations 

 wsis attaiuable, but the i)resent couditiou (three or four years ago) is exhibited in the following 

 table : 



I>iita of a clump of naturally grown young While /'inc. 

 [Age: l''oriy-H[x tji Iiriy-Nix yiiars; iivura£;i:. tU'ly-oiie yejirs. Ueigbt: 70 to 80 I'uot. Aruiu lOK Hi|ii;iro rntlK.J 



This would indicate a yield per acre of about (i,0()(» cubit' I'eet, from which, with the dimensions 

 attained under careful mill jiractice, .some 3(!,00O feet of lumber might be cut. To lie sure, with 

 such open stand much of this must be knotty, trveii though the trees were pruned as far as possible. 



r.y comjiarison with the measurements of naturally grown unthinned acres, we find that two 

 to three times the number of trees of the age indicated in the above table might stand on an acre 

 and make as much total jjioduct (see Massachusetts, site c, which, with .'324 trees, produced (i,188 

 cubic feet); and although a few trees in the thinned grove had reached larger dimensions, the 

 total product of trees over 12 inches in diameter is almost the same, the difl'erence in favor of the 

 thinned part being only Kit) cubic feet. From this com])aris()n it would appear that the thinning 

 was too severe to secure the most desirable results. PI. X shows the comlition of the grove when 

 the measurements were taken. 



Allowance, however, should be made for the amount utilized in thinnings. Whether this 

 inferior material would pay in most cases the cost of its removal is (luestionable. A veiy uncertain 

 estimate by the man who performed the thinnings places the amount of wood removed equal to 

 that now standing, amojig wliitdi is .''>,0(tO shingles. 



The following table shows the measurements of one of the largest trees in the grove: 



Meaturemenln of tree. 

 [Age: Filty-six years. Height : 80 feet.] 



This tree, when felled and cut into wauey-edged boards, made lumber to the amount of .'ifi4 feet. 



