1. Experiments on Colour as perceived by the Eye, with Remarks on Colour-Blindness.

Abstract

These experiments were made with the view of ascertaining and registering the judgments of the eye with respect to colours, and then, by a comparison of the results with each other, by means of a graphical construction, testing the accuracy of that theory of the vision of colour which analyses the colour-sensation into three elements, while it recognises no such triple division in the nature of light, before it reaches the eye.