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 156
We know that a line placed obliquely towards the eye appears foreshortened; in other words, that it forms at the eye a smaller visual angle than when it is placed, at the same distance, square opposite to the eye. On the other hand, we know that the farther a line is removed from the eye the… … * This is demonstrated by reference to a property of the circle explained in the Third Book of Euclid. Suppose an eye
Drawing · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
