INDEX

systematic, 171, 402 theory of, 402, 406 ether, 145, 351 ethics, 205 Euclid, 62, 86, 202-3, 213 Euclidean geometry, 65, 235-6, 337 Euclid's postulate, 83, 91, 124, 353, 443, 453, 468, 470-1 experience, 90-1 experiment, 127, 317, 336, 446 fact, crude, 326, 330 in the rough, 327 scientific, 326 facts, 362, 371 Fahrenheit, 238 Faraday, 150, 192 Faye, 536 Fechner, 46, 52 Fehr, 383 finite, 57 Fitzgerald, 415-6, 500-1, 505 Fizeau, 146, 149, 309, 498, 504 Flammarion, 400, 406-7 flattening of the earth, 353 force, 72, 98, 444 direction of, 445 -flow, 284