Salcher, Prof. 319. Salviati, 144. Saturn, rings of, their formation illustrated, 5. Saurians, 257. Sauveur, on acoustics, 34, 375 et seq. Savage, modes of conception and interpretation of a, 218 et seq. Schäfer, K., 298. _Schlierenmethode_, 317. Schönbein's discovery of ozone, 271. School-boy, copy-book of, 92. Schoolmen, 214. Schools, State-control of, 372 et seq. Schopenhauer, 190. Schultze, Max, 19. Science, a miserly mercantile principle at its basis, 15; compared to a business, 16; viewed as a maximum or minimum problem, 16, footnote; its process not greatly different from the intellectual activity of ordinary life, 16, footnote; economy of its task, 16; relation of, to poetry, 30, 31, 351; the church of, 67; beginnings of, 189, 191; belief in the magical power of, 189; can dispense with mystery, 189; lavish extravagance of, 189; economy of the terminology of, 192; partly made up of the intelligence of others, 196; stripped of mystery, 197; its true power, 197; the economical schematism of, 206; the object of, 206; the tools of, 207; does not create facts, 211; of the future, 213; revolution in, dating from Galileo, 214 et seq.; the natural foe of the marvellous, 224; characterised, 227; growth of, 237; dramatic element in, 243; described, 251; its function, 253; classification in, 255, 259 et seq.; the way of discovery in, 316. See also _Physics_. Sciences, partition of the, 86; the barriers and relations between the 257-258; on instruction in the, 338-374. Scientific, criticism, Socrates the father of, 1, 16; discoveries, their fate, 138; knowledge, involves description, 193; thought, transformation and adaptation in, 214-235; thought, advanced by new experiences, 223 et seq.; thought, the difficulty of, 366; terms, 342-343; founded on primitive acts of knowledge, 190. Scientists, stories about their ignorance, 342. Screw, the, 62. Sea-sickness, 284. Secret computation, Leibnitz's, 33. Seek their places, bodies, 226. Self-induction, coefficient of, 250, 252. Self-observation, 211. Self-preservation, our first knowledge derived from the economy of, 197; struggle for, among ideas, 228. Semi-circular canals, 290 et seq. Sensation of rounding a railway curve, 286. Sensations, analysed, 251; when similar, produce agreeable effects, 96; their character, 200; defined, 209; of orientation, 282 et seq. Sense-elements, 179. Senses, theory of, 104; the source of our knowledge of facts, 237. Seventh, the troublesome, 46. Shadow method, 313 et seq., 317 footnote. Shadows, rôle of, in vision, 81. Shakespeare, 278. Sharps, reversed into flats, 101. Shell, spherical, law of attraction for a, 124, footnote. Shoemaker, inquirer compared to, 105-106. Shooting, 309.