Warren, Samuel Edward, 1831-1909. [from old catalog] · New York, J. Wiley & sons · leaf 156
SHADES AND SHADOWS. 93 curve of shade of the upper torus, in points which the studentmay construct. 4°. The curve of shade on each torus in found as in Prob.XXVII. 5°. The curve of shade of the upper torus casts a shadow onthe middle fillet, which is found as in Prob. IY. But PI. XII.,Fig. 39,…
Shades and shadows
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