782 



INDEX. 



Laplace, works of, i. 82, 97 ; Newton's 

 ideas elaborated by, 96 ; mathematics 

 at the Ecole normale, 112, 237; 113, 

 115; crystallography, 116 ; 'Systeme 

 du Monde,' 119, 319; 'Tbeorie analy- 

 tiqiie des Probabilite-s,' 120, 325 ; his 

 own iiopulariser, 122 ; statistics, 124 ; 

 126; and Cuvier contrasted, 132; 148, 

 154, 177, 181, 187, 200 ; "exact habit 

 of thought," 222; potential func- 

 tion, 231, 316 ; 241 ; Ualton's atomic 

 theory, 246 ; 264 ; researches of, 

 281 ; 306, 311 ; ' Mecanique celeste,' 

 319 ; 358 ; gravitation, 321 ; least 

 squares, 324; 326; the Tides, 330; 

 Gauss, 331 ; mathematical expres- 

 sion of astronomy, 333 ; emanation 

 theory of light, 344 ; 346 ; mole- 

 cules, 347 ; gravitation theory, 349 ; 

 molecular attraction, 354; 'Theorie 

 de I'Action capillaire,' 355 ; quoted, 

 356 ; St Veuaut quoted, 359 ; 362 ; 

 corpuscular theory of light, 370 ; 

 measurement of electrical action, 

 371 ; value of Newton's formula, 373 ; 

 Newton's law, 378 ; astronomical 

 view of nature, 380 ; opposed to 

 undulatory theory, ii. 16 ; on New- 

 ton's emission theory, 17 ; theory of 

 light, 20 ; opposed undulatory theory 

 of light, 24 ; on the commission which 

 crowned Fresnel's 'Memoire sur la 

 Diflraction,' 25 ; extension of gravita- 

 tion into molecular physics, 29 ; 

 theory of capillarity, 33 ; 'researches 

 into electrical phenomena, 67 ; 

 methods of, 70 ; school of, referred 

 to, 93, 100, 101 ; the material and 

 dynamical conceptions of heat, 118 ; 

 cosmological genesis of planetary 

 system, 209; 215; astronomical work 

 of, 227; 228; nebular theory, 

 277, 284 ; quoted, 285 ; 290 ; genesis 

 of the cosmos, 320 ; genetic view 

 anticipated by, 330 ; theory of, 357 ; 

 hypothesis of, 360 ; stability of solar 

 system, 386 ; animal heat, 390, 433 ; 

 analysis of phenomena of nature, 

 399 ; 474, 487 ; science of chances, 

 568 ; 569, 571, 572, 575 ; method of 

 least square, 576 ; doctrine of prob- 

 abilities, 578 ; influence of, 581 ; 

 statistical method in social questions, 

 599 ; curve of error, 616 ; 634, 637 ; 

 his ' Mecanique celeste ' and ' Theorie 

 des Probabilites,' 642; functions of, 

 696 ; 751. 

 Larmor, Jos., vortex theory, ii. 63, 64 • 

 ' ^ther and Matter,' 89, 195 ; mathe- 



matical theory of electricity, 193 ; 

 his position, 195 ; 197 ; atomic and 

 energetic views, 198 ; 595 ; on vectors, 

 656. 

 Lasswitz, 'Geschichte der Atomistik,' 

 i. 433, ii. 5; 'G. T. Fechner,' 369, 

 508; Fechner's philosophy, 513. 

 Laurent, revives Front's hypothesis, i. 

 402 ; attack on electro - chemical 

 theory, 409; "type theory," 411; 

 413; quoted, 419; "substitution" 

 in chemical combination, 429. 

 Laurillart, Bell's theorem, i. 293, 

 Lavater, Caspar, ' Physiognomische 



Fragmente,' ii. 477. 

 Lavoisier, i. 114, 147 ; services to 

 France, 148 ; 170, 188, 200 ; scientific 

 method of, 306, 365 ; influenced by 

 Laplace, 380 ; theory of combustion, 

 386, 393 ; chemical researches, 391 ; 

 392, 399, 400 ; organic analysis, 407 ; 

 chemical balance, ii. 152"; atomic 

 view, 153 ; 379 ; and his school, 382 ; 

 animal heat, 390, 433 ; chemical ele- 

 ments, 398. 

 Lawes, Sir J. B., experiments and pub- 

 lications in agriculture, i. 284. 

 Layard, i. 294. 

 Lazarus, psychologist, ii. 497 ; the 



objective mind in history, 530. 

 Leake, M. W., explorations of, i. 296. 

 Learning, apparent disintegration of, i. 



30. 

 Least squares, method of, i. 120 ; 183 ; 



ii. 576. 

 Le Bel, the carbon tetrahedron, i. 450. 

 Leblanc invents soda process, i. 92. 

 Le Breton, report on Fine Arts, i. 149. 

 Le Chatelier, ' Journal de Physique,' ii. 



169, 173. 

 Lecoq de Boisbaudran, discovery of 



gallium, i. 315, 423. 

 Legallois, ii. 519. 



Legendre reforms geometry, i. 44 ; 

 ' Theorie des Nombres,' 82 ; method 

 of least squares, 120, 183, ii. 576 ; i. 

 181 ; ' Traite des Nombres," 182 ; 

 'Nouvelles methodes pour la deter- 

 mination des orbites des cometes,' 183 ; 

 'Traite des fonctions elliptiques,' 

 185 ; 187 ; potential function, 231 ; 

 on elliptic integrals, ii. 648 ; his rela- 

 tion to Abel and Jacobi, ib. ; Konigs- 

 berger on, ih. ; on foundations of 

 geometry, 656 ; on svnthetic method, 

 670; functions of, 696; 721. 

 Lehmann, ' Molecularphysik ' quoted, 1. 



Leibniz, i. 49 ; essay on, by the 



