St. Mark's rest : the history of Venice written for the help of the few travellers who still care for her monuments (1885)
Ruskin, John, 1819-1900 · New York : Lovell · leaf 410
he circles,draw the curve e b in perspective, as in Fig. 69. Draw the curve x y, touching and enclosing the cui*ves inthe rectangles, and meeting the upper circle at ?/.* Then x y is the contour of the surface of the cup, and theupper circle is its lip. If the line xy \^ long, it may be necessary…
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![An illustration from Works. Popular edition.] 2 series (1886)](https://img.insideoutlibrary.com/img/200/bl-bl_003191336_9-374-1.webp)
