. Wood; a manual of the natural history and industrial applications of the timbers of commerce. Wood; Timber. 26 OF WOOD IN GENERAL gential section (Figs. 21 and 22) the primary rays may be several hundred cell-rows, , upwards of an inch, in height, and, however wide at the middle, taper to one cell at each end. On a radial section they appear as broad, shiny bands, the " mirrors," " felt,'* or " silver grain," so that they are conspicuous on any section, in. f^ ^ ^ =°0 6 tS 02+3 > jd 1—I -H "^ ^ Ji O 2 CJ r-H I O 'T^ g+3 gOn 1 o cm" S "^.^ f>5
. Wood; a manual of the natural history and industrial applications of the timbers of commerce. Wood; Timber. 26 OF WOOD IN GENERAL gential section (Figs. 21 and 22) the primary rays may be several hundred cell-rows, , upwards of an inch, in height, and, however wide at the middle, taper to one cell at each end. On a radial section they appear as broad, shiny bands, the " mirrors," " felt,'* or " silver grain," so that they are conspicuous on any section, in. f^ ^ ^ =°0 6 tS 02+3 > jd 1—I -H "^ ^ Ji O 2 CJ r-H I O 'T^ g+3 gOn 1 o cm" S "^.^ f>5 ^ gj 03 . 1) § 2 whatever plane it may be. In Oak they constitute 16-25 per cent, of the wood (Figs. 23 and 24). The protoxylem of broad-leaved trees differs from that of conifers mainly in that its spirally-thickened elements are tracheae or true vessels, owing to the absorption of the transverse walls of a vertical row of tracheids. But it is in the elements of the secondary xylem. 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 Boulger, George Simonds, 1853-1922. London, E. Arnold
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Keywords: ., bookcentury1900, bookdecade1900, booksubjecttimb, booksubjectwood
