534 



INDEX. 



Psychology, definition, 442 ; changes 

 in its aims and methods, 443 ; 

 experimental, 451 ; comparative, 

 455. 



Pure science, 66. 



Purkinje, 356 ; protoplasm, 358. 



Putrefaction due to micro-organ- 

 isms, 23. 



Q. 



Quetelet, 485. 



Rabl, 878. 



Races of mankind, 483. 



Radical theory, 101. 



Ramon y Caial, 305, 806. 



Ramsay, A. C., glaciation, 262. 



Ramsay, W. and Argon, 74. 



Ranvier, 307. 



Raspail, 355. 



Ratke, 335. 



Rauber, 381 ; Formbildung, 879. 



Rayleigh, Lord, and Argon, 73. 



Recapitulation, 306. 



Recapitulation-doctrine, 50, 375. 



Reflex action, 461. 



Regeneration-experiments, 395. 



Regnault, 115. 



Regression, 408. 



Reibmayr, on in-breeding and cross- 

 breeding, 524. 



Reichenbach, on Goethe, 336. 



Reichert, 335, 357. 



Remak, 306, 357, 359. 



Renard, 269, 281. 



Rennie, 266. 



Reproductive organs, 296, 



Retrogression, 343. 



Retzius, 306. 



Reversion, 394 ; defined, 409. 



Rhys, on fairies, 490. 



Richter, 109. 



Richter's Stoechiometry, 80, 



Richthofen, von, 278, 



Rink, 262. 



Ritter, 277. 



Ritzema-Bos, 394. 



Roberts, 221. 



Rocks, the record of the, 248, 349, 



ROntgen, X-rays, 163. 



Rontgen rays, 157. 



R6rig, 296. 



Romanes, 427, 439. 451. 



Roscoe, Sir Henry, 82, 117. 129; 

 quoted, 141, 147. 



Rosenbush, 273. 



Ross, 262. 



Rossi, de, 254. 



Roux, 315, 364; developmental me- 

 chanics, 379 ; experiments on 

 frog's eggs, 382. 



Rowland, 216. 

 Rudimentary organs, 342. 

 Rumford, 189. 



Rumford's experiments on heat. 

 148. 



S. 



Sabine, Sir Edward, 205, 



Sachs, 338 ; on cell-formation, 863. 



Saltness of the sea, 245, 



Salts, 125, 



Sarasin, 275, 



Saturn's rings, 184. 



Saussure, 229, 260. 



Savage man, 480. 



Sayce, on language, 489. 



Scandium, 73, 112. 



Schafer, 310 ; on thyroid gland, 292. 



Schaffle, on the social organism, 504. 



Scheele, 71, 77, 



Scheerer 275. 



Schimper, 260. 



Schleiden, 312, 881, 338, 856, 359; 

 quoted, 313, 



Schraankewitsch, on brine-shrimps, 

 419. 



Schmidt, 202. 



Schonbein, 124. 



Schroter, 202. 



Schultze, Max, 832, 359 ; defined the 

 cell, 358. 



Schultze, O., 298. 



Schwabe, on sun-spots, 205. 



Schwann, 812, 831, 356, 359 ; quoted, 

 313. 



Schwann and Schleiden, Cell-Theory 

 (1838-9), 286. 



Schwartz, 315. 



Schweigger, 159, 



Science, aim of, 16 ; correlation of, 

 29 ; criticism of, 31 ; definition 

 of, 1, 2 ; factors on progress of, 

 41, 55 ; justification of, 62 ; 

 method of, 2, 19 ; unity of, 25. 



Science and Utility, 65. 



Sciences, classification of, 25. 



Scientific Mood, defined, 5 ; its 

 characteristics, 7. 



Scoresby, 262. 



Secchi, 202. 



Secretions, internal, 296. 



Sedgwick, A., 249. 



Seeliger, 389. 



Seisniometers, 256. 



Seguin and Mayer, 146. 



Semper, influence of the environ- 

 ment, 508. 



Sex, determination of, 891. 



Sexual selection, 437. 



Shaler, 258. 



Shooting stars, 187. 



Siebold, Von, parasites, 28. 



Simms, spectroscope, 212. 



