id author title date pages extension mime words sentences flesch summary cache txt 35419 Noyes, William Wood and Forest .txt text/plain 62544 7076 81 identification of woods which appears in Forest Service Bulletin No. 10, _Timber_, by Filibert Roth. Also, the terms used by lumbermen, "hard woods" for broad-leaved trees In a transverse section of a conifer, for example Douglas spruce, Fig. 8, the wood is seen to lie in concentric rings, the outer part of the In a cross-section, say of oak, Fig. 14, it can readily be seen that some pith rays begin at the center the tree, as the cambium cells form new wood each year. Cross-section of Non-porous Wood, White Pine, Cross-section of Ring-porous Wood, White Ash, distinguish such ring-porous woods as have large prominent pores, like and, in regular grained wood like pine, because the cells are radially color, sap-wood, nearly white; non-porous; rings, fine but distinct; non-porous; rings summer wood broad, dark; grain, straight; rays, sap-wood whitish; non-porous; rings, distinct; grain, straight; rays, Since by far the greater number of timber trees grow in the forest, in ./cache/35419.txt ./txt/35419.txt