Exercises in wood-working, with a short treatise on wood; (1890)
Sickels, Ivin. [from old catalog] · New York, D. Appeton and company · leaf 21
, and constitute theash, of which the principal ingredient is potassium. The amount of ash is greater in the palms and least inthe pines. The percentage of a few are as follows : Oregon pine 008 Red cedar 013 Redwood 0*14 Chestnut OlS White pine 0*19 Whitewood 0*23 White oak 0*41 Hickory 073 Black… … Fig. 12. Fig. 13. Fig. 11.—Shape of a tree on the border of a forest, a, broken branch exposing surfaces for boring insects or fungus spores.Fig. 12.—Young forest tree. b. b. branches die for want of sunlight.Fig. 13.—Shape of forest tree with straight stem and crown of small branches and leaves.…
Woodwork (Manual training) · Wood
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