. Textbook of botany. Botany. 35(> TEXTBOOK OF BOTANY 369. Various Uses of Wood. — The chief wood products are lumber, firewood, railway ties, posts and poles, mine timber, pulp wood, and tanbark. Lumber makes up about half of the total amount of these products, and firewood about one third of the total. About 30 per cent of the lumber is made into finished building ma- terial such as fiooring, sash, doors, and siding; about 2 5 per cent is used as rough lumber ; 10 per cent is used in the mak- ing of boxes and crates; 5 per cent in the manu- facture of cars; 3 per cent for furniture ; abou
. Textbook of botany. Botany. 35(> TEXTBOOK OF BOTANY 369. Various Uses of Wood. — The chief wood products are lumber, firewood, railway ties, posts and poles, mine timber, pulp wood, and tanbark. Lumber makes up about half of the total amount of these products, and firewood about one third of the total. About 30 per cent of the lumber is made into finished building ma- terial such as fiooring, sash, doors, and siding; about 2 5 per cent is used as rough lumber ; 10 per cent is used in the mak- ing of boxes and crates; 5 per cent in the manu- facture of cars; 3 per cent for furniture ; about 7 per cent is exported; and the remainder is used in various other ways. Spruce, poplar, and larch have been most used for wood pulp, but now many other of the softer woods are being used. Oak and hemlock bark and chestnut wood are used in tanning leather; over a million cords of bark and two hundred thousand tons of wood are used in this way each year. 370. Wood Distillation. — The production of turpentine and rosin has been for many years an important industry in the southern states. Almost 30,000,000 gallons of turpen- tine and more than 3,000,000 barrels of rosin are produced. Fig. 201. — A grove of mal-ure red pines (" Norway " pines) at Trout Lake, Wisconsin. Piiotograph from the Wis- consin State Conservation 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 Allen, Charles E. (Charles Elmer), b. 1872; Gilbert, Edward Martinius, joint author. Boston, New York [etc. ] D. C. Heath & co
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