Wood Technology: Constitution, Properties and Uses |
Contents
Introduction | 1 |
What Wood Is | 4 |
The Life of a Tree and Its Relation to the Human Race | 28 |
Copyright | |
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acetic acid air-dry angiosperms appear bald cypress bark bordered pits brown cambium carbon cell walls cells thick cellulose chemical collapse compression conifers conspicuous cord cross section crushing strength crystallites crystals density disk Douglas fir dried dry wood effect fiber saturation point fibrils Figure Forest Products Laboratory glucose grain green groups gymnosperms hardwoods heart heartwood heat hemlock humidity hygroscopic inch kiln layers lens lignin lines liquid load longleaf pine lumber maple material medullary rays micellae micelles Microscope moisture per cent occur parenchyma PHLOEM piece pinkish plants plastic Pores pounds pulp radial ray tracheids red gum red spruce resin resin ducts rings sapwood shown shrink shrinkage species spiral spruce straw color stress structure sugar surface swelling tangential temperature tension tests Tiemann Timber tion tissue tracheids tree Vessel ends visible Western red cedar white pine wood substance yellow pine