44 



THE WHITE PINE. 

 T.vriLK ^'II. — Acre yield of youmt pine ijroves — Continued. 



Massacbnsetts . 



Soil. 



Wbite Pine. 



SiH'Ciufl intermixed. 



Age. 



DinincttT 

 Nunit)er. (breast 



Leugtli of log. 



Fresh, well-draiDed eamly 

 loaiu. 



Tear 



14 



131! 

 177 



Jnehet. I 



14 to 18 

 I" toll 



n to 10 



. 3 to (i 



3 



'3fax. 



40 

 40 



Mm. 

 23 



20 



Volume 

 of logs. 



Ou. fetl. 



31.1.9 

 1.870.4 



Xuinber. 



1.13 

 204 

 10 

 !.•> 

 11 

 15 



Total 



Now Hampshire . 



362 , 



. Dry, well-tlraiiif<l 

 sand. 



2, 188. 3 



15 

 15 



489.3 1 

 51.9 I 



Xante and remarks. 



Oak. 

 Maple. 

 Chestnut, 

 (iiavltlrch. 



clMirv. 

 All other. 



All less than 3. inch 

 diametr-r. 



Hemlock. 

 Keil l>ine. 

 Gray Birch. 



It -would be po.ssible to increase the number of trees that could grow per acre and develop 

 satisfactorily by attention of the forester, as will appear Iroin the stateiiient.s rey:ardiiig- the \\'liite 

 Pine forest i)laiitations in Germany, where i)uro White Pine fjrowths showed at si.xtyeifiht years 

 still over si.\ hundred and seventy trees, and in another place at eighty-two years seven hundred 

 and twenty-three trees, and at one hundred and four years over two hundred and lifty trees per 

 acre. Even in such close stand the crown of living branches leniains long. occui)yiiig one-third of 

 the bole, and dry branches persist down to over half the length. The steins are straight and 

 cylindrical, in this respect also reminding one of the Norway Spruce, although the tendency to 

 fork seems more frequently developed. 



YIELD OF WHITE PIXE. 



The question as to the amount of material which the White Pine is capable of producing ]>cr 

 acre is ditlicnlt to answer. It can not, of course, be deduced from a knowledge of the development 

 of the individual tree, since there remains one factor unknown, namely, the number of trees of 

 > different classes that can occupy an acre. Nor can the cai>acity of production, as a rule, be ascer- 

 tained from the actual production or acre yield of natural virgin growths, for these usually not 

 only do not occur in pure growths, but also are usually not develoi>ed under most advantageous 

 conditions, and do not, therel'oi(>, reincsciit the jiossible or normal yield which could be secured. 

 Only by selecting smaller, seemingly normally and favoraldy developed groups in the forest at 

 dift'erent ages and in various localities and measuring the same may we arrive at an ap])roxiiiiatioii 

 of what the sjiecies is capable of producing by itself. 



Such measurements have not been attempteil, but the yield of virgin acres under varying 

 conditions has been ascertained to give at least a forecast of the possibilities, although ntjt repre- 

 senting the normal or possible yield of fully stocked acres of White Pine. In addition we may 

 utilize the results recorded from Germany (page 01») of a number of iilantations, which have had 

 the advantage of at least the partial care of forest management. 



From these indications, we are justified in tlie assertion that the White I'ine produces per 

 acre as well as any species with which we are acquainted in our northeastern woods, and at a rate 

 which is not excelled by any of the Imiibcr trees within its range. 



In this respect, again, it approaches the German Spruce, though it jjiobably excels t his species 

 in persistency, as It does in the dimensions which it can produce. We can, therefore, for the first 



