Educational woodworking for home and school (1908)
Park, Joseph C · New York, MacMillan · leaf 253
Fig. 2.35. — Ring-porous woods. White oak and hickory, a.r., annualring; su.io., summer wood; sp.w., spring wood; v, vessels or pores:c.^., 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…
Manual training · Woodwork
Internet Archive · University of Toronto, Robarts Library · Public Domain Mark 1.0. Free to use for anything.
