Desire, behaviourist view of, 90 f. introspective view of, 221 ff. Dewey, John, 292 Discontinuity in nature, 101, 106, 108 Dreams, 62, 127, 175, 176, 185, 189, 193 Dualism of mind and matter, 141, 239 Ductless glands, the, 218 Eddington, Professor, 273, 279 Education, 233 Einstein, 96, 116, 239, 242, 249 Electron, 99 ff., 118, 145 “Emergent” properties, 282 Emotions, essential physiological conditions of the, 118 subject to “Conditioning”, 119 generate irrational opinions, 120 Energy, radiation of, from matter into empty space, 145 propagation in empty space, 145 impact on matter in empty space, 146 _Essays in Radical Empiricism_ (William James), 210, 292 Ethics, views of the ancients on, 227 theory that virtue consists in obedience to authority, 227 ff. utilitarian theory of, 229 f. the concept of “good”, 230 mainly social, 233 the supreme moral rule, 234 f. Events, in physics, 110 f. string of, 118 f. “mental”, 141, 280 ff. structure and mathematical laws of, 157 minimal, 277 matter constructed out of, 278 Experience, effects of, in a reaction to stimulus, 180 ff. Familiarity, a stage in memory, 195 f. Fear and Rage, 219 Feeling, as mental occurrence, 202 Forces, 111, 114, 117, 120 f. Form, reaction to, 85 f. Freudian “unconscious” the, 221 Galileo, 80 Generalisations, 271 f. Geodesic, 112, 117 Geometry, as empirical as geography, 249 f. _Gestaltpsychologie_, 37, 41, 43, 68, 247 Gravitation, 116 f., 145, 279 Griffith, Mr. Percy, 118 Habit-formation, 36 Habit-memory, 188, 196 Hegel, 227, 229, 251 Heisenberg, 96, 105, 278, 293 Heisenberg-Schrödinger theories of atomic structure, 243 Heraclitus, 251 Huc, Monsieur, 232 Hume, 180, 191, 247 f. Images, visual, auditory and tactual, 176 behaviourist explanation of, 177 f. difference between sensations and, 179 ff. definition of, 184 f. first stage in memory, 195 Imagination, analysis of, 190 ff. essence of, 191 exceptional gifts of, 193 and belief, 193 f. difference between memory and, 194 Induction problem of validity of, 14 as a practice, 80 f. principle of, 268 f. logical problem of, 269 ff. Mr. Keynes’s examination of, 270 ff. Inference, “physiological”, 13, 80 ff., 135 syllogistic, 79 inductive and mathematical, 83 ff. “Innate ideas”, doctrine of, 245 Interval, space-like and time-like, 110 f. Introspection, 10, 11, 12, 172 f., 201 ff. James, William, 210, 223. Kant, 80, 201, 239, 248, 296 Keynes Mr., on problems of induction, 269 ff. Köhler, 37 ff. Knowing, as mental occurrence, 202