Colour vision : being the Tyndall lectures delivered in 1894 at the Royal Institution (1895)
Abney, William de Wiveleslie, Sir, 1843-1920 · London : S. Low, Marston & Company · leaf 160
Colour Vision. 144 fields for both eyes are given : that for the left eye in the left-hand chart, and that for the right eye in the right-hand chart. The small dark spots within the 5° … the field which
Color vision
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
