Light, mechanical explanations of, iii. [44] seq.;
relation to heat, i. 262, 263;
explanation of pleasure given by, i. 258, iii. [137];
connection with architecture, i. 279, 280.
Locke, i. 49, ii. 6, 7, 45, 81 seq., 141, 173 seq., 185 seq., 212, 213, 258, 259, 402, iii. [5], [23], [59], [394].
Logic, definition of, i. 58, ii. 285;
value of, i. 57-59, ii. 286;
on what its certainty depends, ii. 268.
Love, nature of all true and pure, i. 484 seq.;
root and significance of sexual love, iii, [419], [339-343], [360];