Stránka:book 1922.djvu/426

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396 The Book of Woodcraft Red Oak. (Quercus rubra) A fine forest tree, 70 to 80, or even 140, feet high. Wood reddish- brown. Sapwood darker. Hard, strong, coarse-grained, heavy. A cubic foot weighs 41 lbs. It checks, warps and does not stand for weather or ground work. The acorn takes two seasons to ripen. Apparently all those oaks whose nuts take two seasons to ripen have wood that soon rots. The low flat shape of the cup is distinctive; in fact it has no cup, it has a saucer; leaves 4 to 8 inches long.