INDEX. 



Weber, Eduard, i. 196, 519. 



Weber, Ernst Heinrich, i. 196 ; school 

 of, 200 ; law of sensation, ib. ; 

 "science of life," ii. 396; 402; 

 psycho - physical phenomena, 496 ; 

 500 ; psycho-physics of vision, 504 ; 

 508; "touch and bodily feeling," 

 509; psycho-physics, 517, 519. 



Weber, H., biographical notice of 

 Wilhelm Weber, i. 304. 



Weber, Heinrich, his treatise on algebra, 

 ii. 729, 730. 



Weber, Wilhelm, of Gb'ttingen and 

 Gauss, telegraph, i. 92 ; quoted, 

 171, 172, 196, 199, 211; 'Electro- 

 dynamische Maasbestimmungen,' 265, 

 303 ; 365 ; absolute measurements, 

 309, 323, ii. 117 ; perfected Coulomb's 

 methods, i. 360 ; astronomical view 

 of nature, 366 ; electrical researches 

 of, 367, 368, 369 ; quoted, 370, 373 ; 

 measurements of, 371, ii. 149 ; im- 

 portance of his labours, i. 384 ; law 

 of, ii. 67 ; 76 ; electro - magnetic 

 measurements, 78 ; 79 ; statical and 

 current electricity, 84 ; theory of, 87 ; 

 researches, 92 ; 97 ; electric measure- 

 ments, 143 ; electrical phenomena, 

 146 ; influences Helmholtz, 150 ; 

 theory of electro-dynamic phenomena, 

 151 ; electrical theory of, 153 ; atomic 

 view of nature, 188 ; Helmholtz 

 quoted, 189; 191, 192; electric 

 particles, 197. 



Webster, Daniel, the term " statist," ii. 

 555. 



Webster, Thos., palseontological work 

 of, i. 139. 



Wegele, 'Gesch. d. deutschen Historio- 

 graphie,' i. 206, ii. 555. 



Weidmann, editions of the ancient 

 classics, i. 167. 



Weierstrass, ii. 630 ; Poincare on, 638, 

 703 ; and Lagrange, 693 ; his theory 

 of functions, 694 ; his pure analysis, 

 702 ; genesis of his ideas, 703 ; 

 Lampe on, ib. ; on non-differentiable 

 functions, 705 ; 706 ; and Riemann 

 compared, 707 ; on Kiemann, 708 ; 

 his letter to Schwarz, ib. ; proves 

 Gauss's statements, 726 ; 733. 



Weight and mass, i. 336. 



Weis, Samuel Christian, mentioned by 

 Verdet, ii. 41. 



Weismann, A., 'Essays upon Heredity,' 

 ii. 372 ; idioplasma theory, 448, 611 ; 

 on heredity, 450 ; on pangenesis, 455 ; 

 theory of evolution, ib. ; "On the 

 Duration of Life," 457; 'Essays on 



Descent and Heredity,' 459 ; versus 

 Lamarck, 460. 



Weissbach, influenced by Poncelet, ii. 

 101. 



Weisse, Chr. H., influence on Lotze, ii. 

 500 ; 508. 



Weld, ' History of the Royal Society,' i. 

 90, 127, 227, 228, 283 ; quoted on the 

 publication of the 'Principia,' 98. 



Weldon, W. F. R., on crabs, ii. 621 ; 

 on Pearson's methods, 623. 



Wells, 'Essay on Dew,' i. 230 ; 'Two 

 Essays upon Dew and Single Vision,' 

 ii. 334 ; 347. 



Werner, A. G., Freiberg Mining Aca- 

 demy, i. 17 ; school of geology of, 

 116 ; Cuvier on, 118 ; 155 ; connection 

 of, with modern science, 175 ; scien- 

 tific strife with Button, 283; 290; 

 study of fossil remains, ii. 225 ; 266 ; 

 and Hutton, 291 ; describes mineral 

 character of rocks, 294. 



Wernicke, language, ii. 539. 



Wessel, Caspar, on imagiuaries, ii. 

 653. 



Weyrauch, Jacob J., ' Kleinere Schriften 

 und Briefe von Robert Mayer,' ii. 97, 

 108. 



Wheatstone and Cooke, first telegraph 

 lines, i. 303. 



Wheatstone, Ohm's law, i. 365 ; 

 quoted, 366 ; stereoscope, ii. 486, 

 505 ; 506. 



Whewell, Wm., on relations of the 

 sciences, i. 37 ; identification of 

 thought with philosophy, 62 ; ' Writ- 

 ings and Correspondence,' 91; crys- 

 tallography, 117; 236 ; quoted, ib.; his 

 influence, 261 ; ' History of the In- 

 ductive Sciences,' 262, 277, 306, 365 ; 

 270 ; Analytical Society, 271 ; ' His- 

 tory of the Inductive Sciences ' 

 quoted, 291, 292, ii. 12; influenced 

 by Kant, i. 307 ; origin and variation 

 of species, 310 ; Avogadro's hypo- 

 thesis not mentioned by him, 428 ; 

 the final establishment of the undula- 

 tory theory, ii. 26 ; ' Philosophy of the 

 Inductive Sciences,' 205 ; his divisions 

 abandoned, 210 ; quotation from Lin- 

 naeus, 220; account of vertebral theory, 

 251 ; 268 ; the study of functions, 

 269 ; 318 ; Bridgewater Treatise, 325, 

 327 ; Bacon's "method of instances," 

 558. 



Whiston, on reluctance of Cambridge 

 to accept theories of Newton, i. 270. 



White, Gilbert, of Selborne, i. 179; 

 'Natural History of Selborne,' 286 ; 



