A manual for teaching model-drawing : from solid forms, the models founded on those of M. Dupuis : combined with a popular view of perspective, and adapted to the elementary instruction of classes in schools and public institutions (1843)
Williams, J. Butler, Sir, Lowry, Joseph Wilson, 1803-1879 · London : J. W. Parker · leaf 245
222 GEOMETRICAL PERSPECTIVE. nary point exactly as high above the bottom of the picture, or the intersection of the original plane, as the eye is above the original plane; it will vanish therefore in the line bc. If the original object, instead of being placed below the original plane, were placed… … lower does it fall in the picture, until at last, if the object is supposed to be at an infinite distance, its image will vanish in an imaginary point exactly as much below the top of the picture, "or the intersec- tion of the original plane, as the eye is below the original plane: it will vanish…
Drawing · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
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