Note note 29 — ANALYSIS OF THE PHENOMENA OF THE HUMAN MIND James Mill
Reading edition
29 We derive through the eye (1) sensations of light in its various degrees, and of colours and their shades; (2) visible form and visible magnitude, together with their changes; and also visible movements. The second group of feelings depends on the movements of the eyes; and they are feelings of activity, or of muscular expenditure. We have, besides, a certain internal muscular sensibility to the alterations of the eye ball in adjusting for distance—B.