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302 Woodcraft Manual for Boys and does not stand for weather or ground work. A cubic foot weighs 44 lbs. Wisconsin to Maine and south to Gulf. Pin Oak, or Swamp Oak (Quercus palustris) Fifty to 70 or even 120 feet high, in swampy land. Wood hard, coarse-grained, very strong and tough. Will not stand exposure next to ground. A cubic foot weighs 34 lbs. Its acorns take two seasons to ripen. Leaves 4 to 6 inches long. In moist woods and along swamp edges. Massachusetts to Iowa and Arkansas. Beech (Fagus grandifolia) In all North America there is but one species of Beech. It is a noble forest tree, 70 to 80, and occasionally 120, feet high; readily distinguished by its unfurrowed ashy gray bark. Wood hard, strong, tough, close-grained, pale, heavy. Leaves 3 to 4 inches long. A cubic foot weighs 43 lbs. Wisconsin to Nova Scotia and south to Gulf.