An introduction to the study of colour vision (1915)
Parsons, John Herbert, Sir, 1868-1957 · Cambridge [Eng.] : University Press; New York, G.P. Putnam's Sons · leaf 255
tion from Abney's published cases. Since the observations in Abney's cases were all published before the calculated curves were obtained, and some were indeed published before the sensation curves used in the calculations had been obtained, they comprise an overwhelming volume of evidence. If… … 64 62 60 58 56 54 52 50 48 46 44 42 40 38 36 34 32 30 28 roloo1 ' ' ' esjoo1 ' ' ' eoloo 'II' 55joo ill I solooAu ' ' Fig. 69. Luminosity curves of a normal trichromat with excessive macular pigmentation. + + + foveal ; O O O O parafoveal. (Watson.) of measuring directly the amount of deficiency of…
Color vision
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