Bench work in wood; a course of study and practice designed for the use of schools and colleges (1888)
Goss, William Freeman Myrick, 1878- · Boston : Ginn · leaf 138
nces which may change from year to year. The outer portion of the trunk is called the sap-wood? andit is usually lighter in color, and less strong and dense than theinterior portions, or heart-wood. The circulation of sap through the sap-wood occurs duringfavorable weather. In winter it is supposed… … 126 BENCH WORK IN WOOD. The heart-wood is nearly or quite impervious to sap, itsvessels being closed up, and the wood is dense and hard. Itis usually far more durable than sap-wood. Different kinds of trees, and different individuals of thesame species, have different proportions of sap-wood.…
Woodwork (Manual training)
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![An illustration from L'optique divisée en trois livres : ou, l'On démontre d'une maniere aisée tout ce qui regarde 1. la propagation & les proprietez de la lumiere. 2. La vision. 3. La figure & la disposition des verres qui servent à la perfefectionner [sic] (1682)](https://img.insideoutlibrary.com/img/200/ia-loptiquedivise00ango-34-5.webp)
