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 151
130 PRINCIPLES OF PERSPECTIVE. extremity of a line inclined downwards from the spectator is actually higher in its course to the eye than the ray of light from the nearer, and conse- … quently higher extremity, may at the first consider- ation appear paradoxical: however, the evident fact that the ray of light from the distant extremity is higher in its course leaves no doubt on the subject. Difficulty of representing a Plane inclining downwards from the Spectator's Position. In…
Drawing · Perspective
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
