See [Instinct].
Instinct, an act directed to an unknown end, i. 148, 150, 197, iii. [96], [346] seq.;
relation of, to guidance by motives, iii. [96] seq.;
relation to somnambulism, iii. [98];
throws light on organising work of nature, iii. [96-100], [103];
in man, iii. [346] seq.
Intellect, pure, ii. 179, 180;
empirical, secondary nature of, ii. 411-467, iii. [3] seq., [291];
end of, i. 199, 228, ii. 336, 485, iii. [21] seq.;