King, Charles A. (Charles Albert), b. 1865 · New York, Cincinnati [etc.] American book compay · leaf 22
s in pine, for instance, which has fifteenthousand to the square inch. Aside from adding much tothe beauty of the lumber, they also give strength; iflumber is dried out too rapidly by artificial heat, it isapt to check, or crack, upon the line of the medullaryrays. 5. The grain in trees. — In open… … liG. 3. — Defects in Lumber. a, wind shakes or cup shakes: 6, heart shakes; c, star shakes; d, branch broken off, showingthe method by which the annual layers gradually cover broken branches; e, hard knoi,. as the wood is more cross-grained than that from treeswhich grow in the heart of a forest,…
Woodwork (Manual training)
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