Warren, Samuel Edward, 1831-1909. [from old catalog] · New York, J. Wiley & sons · leaf 74
horizontalcylinder near I/. When, however, the same element of shadelies to the right of I/, a small portion of T—LH will cast asmall shadow on the vertical cylinder. b. By constructing the base dxV in end elevation, which wouldbe a straight line equal to GT, and in G-T produced, and… … PI. VI.
Shades and shadows
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