Volume Volume1\Light and Shade\Book4
Entry# 188.
Contents: Vol. 1 | Vol. 2
FOURTH BOOK ON LIGHT AND SHADE.
On the shape of the cast shadows (188-191).
The form of the shadow cast by any body of uniform density can never
be the same as that of the body producing it. Footnote: Comp. the
drawing on PI. XXVIII, No. 5.