Foster, Edwin W · Boston : Ginn and Company · leaf 68
ber. Timber refers to all of the largest sizes, such as beamsand joists. Planks are wide strips over one inch thick, 99 HSwuffi^^^^ V ^^ftiWI& HiVkl ^^.^^i^fl^S^^ ^bb -—-~ . 9l^^r 1 \ ^v N —-^ Fig. 71. A Large Band Saw and boards are one inch or less in thickness, varying inwidth and length.… … Fig. 72. End of Log, showingAnnual Rings and Medul-lary Rays By examining the end of a log we can learn a great deal of the life of the tree. It is made up of a number of irregular rings and of lines radiating from the center and running in nearly straight lines toward the bark. The number of rings…
Woodwork · Trees
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