. Check list of the forest trees of the United States : their names and ranges. Forests and forestry; Trees. 70 TIMBER. ADDITIOXAI, N(»Ti:S lOK DIS riN( Tl( iNS IX TIIK (iR()TTl>. Cherry and birch are soinntiiiies coiiioiiiKU'd, tlif liiuli pith rays on the cherry on radial sections readily distiiignishes it; (listinct i)ores on hirch and spring wood zone in cherry as well as the darker vinons-brown c<dor of the latter will prove helpful. Two groups of birches can be readily distinguishe<l, thougli specific distinction is not always possil)Ic. 1. Pith rays fairly distinct, the pores r
. Check list of the forest trees of the United States : their names and ranges. Forests and forestry; Trees. 70 TIMBER. ADDITIOXAI, N(»Ti:S lOK DIS riN( Tl( iNS IX TIIK (iR()TTl>. Cherry and birch are soinntiiiies coiiioiiiKU'd, tlif liiuli pith rays on the cherry on radial sections readily distiiignishes it; (listinct i)ores on hirch and spring wood zone in cherry as well as the darker vinons-brown c<dor of the latter will prove helpful. Two groups of birches can be readily distinguishe<l, thougli specific distinction is not always possil)Ic. 1. Pith rays fairly distinct, the pores ratlier few and not more abnndant in the spriuir wood; wood heavy, usually darker, (No. 48) CnKUUY macu and (No. 49) luucn. 2. Pith rays barely distinct, i)orcs more numerous and commonly forming a more porous spring-wood zone; wood of medium weight, (No. 51) Canok on PAi'KU ^T! ari Lljj- ^*. Beech I Sycamore p Birch. Fio. 45.—Wood of bcicli, sycamore, ami bircli. The sjjecies of maple may be distinguished as fidlows: 1. ^lost of the pith rays broader than the jxiics and very conspicuous, (No. 79) Sugar 2. Pith rays not or rarely broader than the pores, fine but conspicuous. a. Wood heavy and hard, usually of darker reddish color and commonly spotted on section (No. 80) Hed h. Wood of medium weiglit and hardness, usually light colored, () SiLVKU MAI' Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Sudworth, George Bishop, 1862-1927; Roth, Filibert, 1858-1925. Timber : an elementary discussion of the characteristics and properties of wood; Carl A. Schenck Collection (North Carolina State University). NCRS. Washington, D. C. : Dept. of Agriculture, Forestry Division
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectforestsandforestry
