King, Charles A. (Charles Albert), b. 1865 · New York, Cincinnati [etc.] American book compay · leaf 63
-paring lumber for market, a high degree of skill andjudgment is necessary to insure the best results. The greatest deterioration in lumber, after it has been cutand properly piled, is generally due to the tendency towarp, the cause of which is indicated in Fig. 23, and whichmay to great extent be… … that the curves of its top and bottom sides are prac-tically uniform. This is because the annual layers areat nearly a right angle with the sides of the board, whichcauses the board to shrink in thickness, and very littlein width. This is due to the tendency of lumberor parallel with, the annual…
Woodwork (Manual training)
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