Color-blindness in its relation to accidents by rail and sea (1878)
Holmgren, Frithiof, 1831-1897, author · Washington : Government Printing Office · leaf 25
een E. and O., and also between Y. and G., in fig. 2, and this is entirely confirmed by experience. 2. Oreen hlindness derives its origin, according to the theory, from the absence or paralysis of the perceptive elements of green. The green- blind has therefore but two fundamental colors, that is —… … The spectral redy which strongly excites the perceptive organs of red, and but very faintly those of violet, must therefore appear to the green- blind as an extremely “saturated” red, but of a light somewhat less in¬ tense than the normal red, which is con)paratively more yellowish, as green forms…
Color Vision Defects · Accidents, Occupational -- prevention & control · Railroads · Ships
Internet Archive · U.S. National Library of Medicine · Public domain (published before 1931). Free to use for anything.
