Representation and presentation, 9, 10, 13, 14, 192. Retrospection. _See_ Memory. Ribot, T., 238, note[114], 290, note[135]. Richter, J.P., 143. Robertson, Professor G.C., 35, note[14]. Romanes, G.J., 105, note[2], 250, note[122]. Rousseau, 280. S. Savage, dream theory of, 128; idea of nature of, 225. Scherner, C.A., 140, 149. Schopenhauer, A., 145, 342. Schroeder, H., 85. Science, philosophy and, 8, 36, 285, 344; conception of the material world in physical, 36, 343, 346, 347; and common cognition, 338, 357. Scott, Sir W., 116, 125. Secondary qualities, 36, 344. Selection, process of, in perception, 95; in dreams, 174; in memory, 257, 263. Self, confusion of, in dreams, 163; introspective knowledge of, 192; self-deception, 200; identity of, 241, 282, 285; confusion of present and past, 267, 284; disturbances in recognition of, 287, 289; momentary confusions of, 295; confusion of present and future, 305. Self-esteem, illusion of, 315; origin of, 319; utility of, 342. Self-preservation, 320. Sensation, element in perception, 20; discrimination and classification of, 21; interpretation of, 22; inattention to, 39, 87; modified by central reaction, 39, 87, 89, 91; confusion of novel, 40; indistinct, 41; misinterpretation of, 44; relation of, to stimulus, 46, 50; limits to discrimination of, 52; after-impression, 55; subjective, 59, 62, 107, 143; localization of, 59. Sensibility, limits of, 50; variations of, 64. Sensualism, philosophic, 348. Shadow, cast, 77. Shakespeare, 3. Sight, mode of perception, 19, 33, 34, 48, 49; local discrimination in, 52; single vision, 54; localization of impression in, 60; in sleep, 139; images of, in sleep, 150, 154. Single, vision, 54; touch, 72. Sleep, mystery of, 127; physiology of, 131. Sleight of hand. _See_ Conjuror. Smell, as mode of perception, 34, note[14]; localization of impression in, 60; subjective sensations of, 108; in sleep, 141; and taste, 171. Solidity, illusory perception of, 75, 96. Space, representation of, 207. Specific energy of nerves, 58. Spectra, ocular, etc. _See_ Subjective sensation. Spencer, Herbert, 32, note[12], 128, note[69], 323, 340. Spinoza, 143, 184. Spiritualist _seances_, 103, 107, 123, 265. Stereoscope, 75. Stewart, Dugald, 172, 306. Stimulus, qualitative relation of, to sensations, 46, 58, 67; quantitative relation of, to sensation, 50, 64; after-effect of, 55; prolonged action of, 56; subjective or internal, 62; exceptional relation of, to organ, 70; action of, in sleep, 135, 139, 143; in hypnotic condition, 186. Struempell, L., 144, 147, note[89]. Subjective, experience, 26, 27, 137, 214; movement, 51, 57; sensation, 59, 62, 107, 113, 121, 143.