. Essentials of biology presented in problems. Biology. OUR FORESTS 137 33,289,369,000 feet of lumber. They also cut over 12 billion shingles and nearly 30 billion laths. Nobody can tell how much lumber was wasted, either in the forest or at the mill. The census estimates, moreover, that owing to conditions caused by the panic, the amount cut was very considerably under that cut in 1907. Washington ranks first in the production of lumber. Here the great Douglas fir, one of the " evergreens," forms the chief source of supply. In the Southern states, especially Louisiana and Mississipp
. Essentials of biology presented in problems. Biology. OUR FORESTS 137 33,289,369,000 feet of lumber. They also cut over 12 billion shingles and nearly 30 billion laths. Nobody can tell how much lumber was wasted, either in the forest or at the mill. The census estimates, moreover, that owing to conditions caused by the panic, the amount cut was very considerably under that cut in 1907. Washington ranks first in the production of lumber. Here the great Douglas fir, one of the " evergreens," forms the chief source of supply. In the Southern states, especially Louisiana and Mississippi, yellow pine and cypress are the trees most lumbered. Uses of "Wood. — In our forests much of the soft wood (the cone- bearing trees, spruce^^ j3alsam^_hemloxik^.and_ pine), and poplars, aspens, basswooji, with some other species, make paper pulp. The daily newspaper and cheap books are responsible for inroads on our forests which cannot well be repaired. It is not necessary to take the largest trees to make pulp wood. Hence many young trees of not more than six inches in diameter are sacrificed. Of the hundreds of species of trees in our forests, the conifers are probably most sought after for lumber. Pine, especially, is prob- ably used more extensively than any other wood. It is used in all heavy construction work, frames of houses, bridges, masts, spars and timber of ships, floors, railway ties, and many other purposes. Cedar is used for shingles, cabinetwork, lead pencils, etc.; hemlock and spruce for heavy timbers and, as we have seen, for paper pulp. Another use for our lumber, especially odds and ends of all kinds, is in the packing-box industry. It is estimated that nearly 50 per cent of all lumber cut ultimately finds its way into the construction of boxes. Hemlock bark is used for tanning. The hard woods, ash, basswood, 'beech, Jjkdi, cherry-,,rhcstmit, elm, maple, oak, ancT walnut, are used largely for the " trim " of. Transportation of lumber in
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbiology, bookyear1911
