144 



THE WHITE PINE. 



TABLE VI. Acre yields of White Pine and measurement of sample treei Continued. 



C.-PEXNSYLVANIA-Conttaned. 



MEASUREMENTS OF SAMPLE TREES Continued. 



Age elan: 230 to 250 years. 



CODOMDJAMT GROWTH. 



(2) SITE/: 



Clearfield County. 

 [1,200 to 1,500 feet above sea level.] 



Sample area : 1 acre. 



Soil : Yellow clayey loam of medium grain (fine shales in it), deep, fresh, well drained, with 2 Age of pine : 240 to 260 years, 

 to 3 inches mold on top, and surface cover of scanty leaves, Fern, Teaberries, and scattering Density of crown cover : 0.7 ; 



Dogwood (Laurel northeast corner and north side) ; subsoil, laminated shale of indefinite 

 depth. 



Foreit condition!: Hemlock (62 per cent) mixed with White Pine (28 per cent), with occasional 

 hardwoods (10 per cent), Maple, Beech, and Birch, on hill sloping toward southwest, bordered 

 by left-hand branch of Narrow Creek; undergrowth, moderately dense, of very young Beech, 

 Hemlock, and occasional Birch and Cucumber. 



ACRE YIELD. 



in places, 0.8. 

 Number of trees: 132. 



Average annual accretion : All species, 63 cubic feet. 



360 feet B. M. 



