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 79
l projection is an ellipse whose majoraxis is equal to the horizontal projection of the small circle, andwhose minor axis is equal to the vertical projection of that line. 12. Fig. M M 1, shows a cone with a vertical axis, cut by aplane perpendicular to the vertical plane of projection. Theline of… … Fig. K K 2
Shades and shadows
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