Applied perspective, for architects and painters (1901)
Longfellow, William Pitt Preble, 1836-1913 · Boston and New York, Houghton, Mifflin and company · leaf 22
what the sky would be if the earth could be removed and the sky left for us to see,below as well as above. These principles, simple as they are, are often violated inpractice, and we may see in the same picture the horizontal lines of houses, whichshould vanish in the horizon, pointing higher and… … TWO SIDES OF A STREET PROJECTION We see all objects by rays of light that come from every point of them to the pupilof the eye. The paths of these rays are a series of straight lines, which we call visuallines, and all meet practically in a point which is the position of the eye, and is namedthe…
Perspective
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