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442 The Book of Woodcraft Sugar Maple, Rock Maple or Hard Maple. (Acer saccharum) A large, splendid forest tree, 80 to 120 feet high; red in autumn. Wood hard, strong, tough and heavy but not durable. A cubic foot weighs 43 lbs. It enjoys with Beech, Hickory, etc., the sad distinction of being a perfect firewood. Thanks to this it has been exterminated in some regions. Bird's-eye and curled Maple are freaks of the grain. Leaves 3 to 5 inches long. Its sap produces the famous maple sugar. This is the emblem of Canada. There is a black barked variety called Black Sugar Maple (A. nigrum). It is of doubtful status.
