. The manufacture of pulp and paper : a textbook of modern pulp and paper mill practice. Fig. 15.—Cells of Wood of Broad-Leaved Trees, Greatly Enlarged. (1), wood fiber from broad-leaved tree; (2), vessel, poplar, with large, clear openings atends of segment; (3) vessel, birch, with scalariform openings at ends of segment; (4). vessel,beech, with clear or sclariform openings at ends of segments; (5) vessel, maple, with spiralthickenings; (6) vessel, chestnut, springwood; (7), vessel, chestnut, summerwood; (8),tracheid, chestnut, springwood; (9), wood parenchyma cells, which occur to a slight e
. The manufacture of pulp and paper : a textbook of modern pulp and paper mill practice. Fig. 15.—Cells of Wood of Broad-Leaved Trees, Greatly Enlarged. (1), wood fiber from broad-leaved tree; (2), vessel, poplar, with large, clear openings atends of segment; (3) vessel, birch, with scalariform openings at ends of segment; (4). vessel,beech, with clear or sclariform openings at ends of segments; (5) vessel, maple, with spiralthickenings; (6) vessel, chestnut, springwood; (7), vessel, chestnut, summerwood; (8),tracheid, chestnut, springwood; (9), wood parenchyma cells, which occur to a slight extentin most woods; (10) one medullary cell; if, openings in walls of vessels connecting with raycells; BP, bordered pits in walls of vessels. side by side, which makes the medullary ray as a whole verymuch larger than it is in poplar. The shape and the distributionof the pits may be seen in Fig. 15. Here (1) is a fiber froma broad-leaved tree; the other numbers are as follows: (2)vessel, poplar, with large clear openings at ends of a segment;(3) vessel, birch, with scalariform ope
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectpaperma, bookyear1921
