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 22
projected in plan and elevation in the line 11. The horizontalangle through which it is thus revolved will be the angle 6, as shown in the plan. If now, in the plan, the figure plmt is revolved about the axis of revolution at p by the angle 0,the ray Imwill become parallel to the vertical plane. It… … /f\ 1 \ \ m if llili^^ Fig. M 4
Shades and shadows
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