Freemasonry of artists, 293. Fusion, in perception of heat, 44 f.; of cutaneous and kinæsthetic qualities, 47; of tastes, 49; of smells, 49; of taste, touch and smell, 48, 159; of tones, 54, 122, 159; of organic sensations, 64, 159; of feeling and sensation, 81, 90, 319; hypothetical, of vision and kinæsthesis, in space-perception, 129; a mode of connection of mental processes, 159, 168; and synergy of brain-processes, 160. General factor, in intellectual response, 310 f. Generalisation, nature of, 280; experiments on, 282 f. Genius, 198. Gesture, 222, 224; definition of, 268; language of, 267 ff.; and origin of speech, 269 f. Grey, neutral, a brain-sensation, 59; physiologically mixed with all visual processes, 59 ff.; the final term of adaptation, 61. Growth and decay, law of mental, 183, 211, 233. Habit, 96, 99, 311; formation of, 170 f.; disadvantage of, in psychological observation, 171 f.; pattern of processes in, 171 f.; Darwin’s principle of serviceable associated, 223; of psychological observation, 329 f.; hypnotic, 348. Habitual images, 77 f., 265 f., 270. Hallucination, 76, 78, 340. Heat, perception of, 44 f. Hue, 57. Hunger, 64 f. Hypnosis, instinctive origin of, 335, 341; generalised picture of, 342; symptoms of, 342 f.; liability to, 343 f.; function of operator in, 344 f.; methods of, 344; therapeutic value of, 347 f.; habit of, 348; relation of, to will, 343; change of perception in, 342, 348 f. Idea, analysis of typical, 116 f.; made up of core and context, 116 f., 121, 165, 167; meaning in, 117 ff.; varying complexity of, 121; types of, 138 ff., 154, 166 f., 197; association of ideas, 145 ff.; idea of associationism is a meaning, 149, 162, 163 f., 168; situational context of ideas, 166 ff.; the memory-idea, 184 ff.; the idea of imagination, 194 ff.; empathic, peculiarity of, 198; abstract, 263 ff. Ideas, community of, 296. Ideomotor action, 243, 251. Illusion, perceptive, 135 ff.; arrow head and feather, 136 ff.; of memory, 186, 188 f.; of recognition, 187 f.