Identification of the Economic Woods of the United States: Including a Discussion of the Structural and Physical Properties of WoodWiley, 1919 - Broj stranica: 157 |
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Stranica
... Radial sections of heterogeneous rays 4. Radial section of ray of Pinus strobus ( white pine ) 5. Radial section of ray of Pinus edulis ( piñon pine ) 6. Radial section of ray of Pinus resinosa ( red pine ) 7. Radial section of ray of ...
... Radial sections of heterogeneous rays 4. Radial section of ray of Pinus strobus ( white pine ) 5. Radial section of ray of Pinus edulis ( piñon pine ) 6. Radial section of ray of Pinus resinosa ( red pine ) 7. Radial section of ray of ...
Stranica 3
... radial , and tangential as possible . Blocks of the lighter woods can be softened sufficiently by boiling them in water until thoroughly saturated . The process may be hastened by interrupting the boiling by additions of cold water . In ...
... radial , and tangential as possible . Blocks of the lighter woods can be softened sufficiently by boiling them in water until thoroughly saturated . The process may be hastened by interrupting the boiling by additions of cold water . In ...
Stranica 16
... radial or tangential rows , producing diffuse- porous woods ( Plate VI ) . ( See GROWTH RINGS . ) In any case the ... radial walls , except in late wood , and are most abundant near the ends of the tracheids and in one or two rows ( Fig ...
... radial or tangential rows , producing diffuse- porous woods ( Plate VI ) . ( See GROWTH RINGS . ) In any case the ... radial walls , except in late wood , and are most abundant near the ends of the tracheids and in one or two rows ( Fig ...
Stranica 19
... radial arrangement . In O b.p. A B C O OOOOO O s.p. b.p. s.p. b.p. Sc.p. 000000 00000000 b.p. H FIG . 2. - Typical Wood Cells . A , Wood fibre with very narrow lumen ; B , wood fibre with larger lumen and showing oblique , slit - like ...
... radial arrangement . In O b.p. A B C O OOOOO O s.p. b.p. s.p. b.p. Sc.p. 000000 00000000 b.p. H FIG . 2. - Typical Wood Cells . A , Wood fibre with very narrow lumen ; B , wood fibre with larger lumen and showing oblique , slit - like ...
Stranica 22
... radial rows . These features are quite important in classifying woods . For example , in Fraxinus americana the pores in the late wood are usually joined tangentially by narrow bands of wood parenchyma , while in F. nigra ( Plate V ...
... radial rows . These features are quite important in classifying woods . For example , in Fraxinus americana the pores in the late wood are usually joined tangentially by narrow bands of wood parenchyma , while in F. nigra ( Plate V ...
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absent Acer Anatomy Betula bordered pits brown cambium Catalpa Cedar cell walls cells high cells wide Comparative Anatomy cross section DEBARY dense Dicotyledons distinct early wood elements Esculus Forestry Fraxinus grain growth ring Guaiacum Gymnosperms Hardwood Record heartwood heartwood and sapwood Hicoria IRVING W Juglans Juniperus Juniperus virginiana late wood Leitneria lens Liquidambar Liriodendron Magnolia MAXWELL numerous Odor perforations simple phloem Pine Pinus Pith flecks pits into ray Platanus Plate Populus Pores in late portion Quercus radial ray cells half-bordered Ray parenchyma ray tracheids resin resin cells resin ducts Robinia sapwood Sassafras scalariform Sequoia simple pits soft species stem structure surface tangential Taxodium Texture Tilia Timber Toxylon tree tyloses U. S. Dept U. S. Div U. S. Forest Service Ulmus unaided eye usually Vessels without spirals wood fibres Wood parenchyma Wood-using Industries xylem
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