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August 29, 1885

Correlation Theory of Color-Perception.

JAMA. 1885;V(9):251. doi:10.1001/jama.1885.02391080027016

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The author has carefully and patiently studied the many conflicting and opposing theories of color-perception, and has done much toward their elucidation and simplification. Accepting the theory of undulation, and that a difference in the number of vibrations makes a change in the natural result, he makes three positive assertions:

First  —That as these actions are perceived, there must be organs able to appreciate them;

Second  —That each series of organs must have an apparatus able to respond to the quality of its perceived impressions;

Third  —That as all natural imponderable stimuli are the resultants of a mere difference in the number of vibrations of one and the same ether, the organs for the receipt of the different varieties must be but analogues and modifications of each other.The author very properly advises the discontinuance of the terms "anthropochromatopsia," "hypoanthropochromatopsia," "pseudochromatopsia," and the substitution of the much better English expressions,

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