Educational woodworking for home and school (1908)
Park, Joseph C. (Joseph Charles), b. 1872 · New York, The Macmillan company · leaf 255
H O.G. ar-i . •.sp.w.- >p.w ■i?-i 3. 234. — Non-porous woods. A, fir; 5, hard pine; C, softar, annual ring; o.e., outer edge of ring; i.e., inner edge ofs.w., summer wood; sp.w., spring wood; rd, resin ducts. ods. A, fir; B, hard pine; C, soft pine;er edge of ring; i.e., inner edge of… … Fig. 235. — Ring-porous woods. White oak and hickory, a.r., annualring; sum., summer wood; sp.w., spring wood; v, vessels or pores:c.L, concentric lines; rt, darker tracts of hard fibers forming the firmpart of oak wood; pr, pith rays. rings distinct by a zone of large pores collected in thespring…
Woodwork (Manual training)
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