Volume 1 — CHAPTER IX
Reading edition
THE SENSE OF SIGHT: COLOR VISION
Does the dancer see colors?—The food-box method of testing color vision— Waugh's food-box method—Results of tests—Tests by the use of colored papers in the visual discrimination box—Yellow-red vision—Blue-orange vision—Brightness vision versus color vision—Brightness check tests—Green-blue vision—Violet-red vision—Conclusions.