Shades and shadows, with applications to architectural details, and exercises in drawing them with the brush and pen .. (1912)
Ware, William R. (William Robert), 1832-1915 · Scranton, International Textbook Company · leaf 20
ne of the tangent surfaces, a point in the Line of Shade upon the other surface is determined. Just as the Line of Shade of the given surface, the Line of Shade of the enclosing surface, the Line of Con-tact of the two surfaces, and the Tangent Plane, are all tangent to one another and to the… … SURFACES OF REVOLUTION II iliiii
Shades and shadows
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