A treatise on painting : In four parts ... The whole illustrated by examples from the Italian, Venetian, Flemish, and Dutch schools (1837)
Burnet, John, 1784-1868 · London : James Carpenter · leaf 30
n oval shape at the top or bottom, according asthey are below or above the eye. Or if he holds the cup with the sidedownwards, and turns the mouth gradually round towards him, he will per-ceive the cause why arches, or circular gateways, appear elliptical in a sideview. It arises from parts of the… … A suppose the eye of the spectator placed at a, those parts which lie in the 12 AN ESSAY ON THE direction of the rays of vision, b, occupy less space on the line, c, whichcuts through them, and when drawn upon a flat surface would present anappearance like d, Fig. 16. Or imagine a line drawn…
Painting
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