438 



INDEX. 



course of discliarge imguided by 

 purpose, 201. 

 Niunber, origin of conception of, 

 154. 



Oken's classification of knowledge, 

 125. 



Painting and sculpture, origin of, 

 20. 



Paleontology neither proves nor dis- 

 proves development, 355, 364. 



Picturesque, meaning of, 421. 



Plato's model republic, central idea 

 of, 376. 



Previsions and ordinary knowledge, 

 117 ; previsions known as science, 

 118 ; common and scientific, 123 ; 

 when quantitative arose, 158 ; in- 

 crease in precision, 171. 



Primary divisions of a germ and of 

 a society, 392-395. 



Progress, ' current meaning of, 1 ; 

 present inquiry concernins^, 2 ; 

 law of progress exemplified in the 

 genesis of solar system, 3 ; in the 

 phenomena of the earth's crust, 

 5 ; in the advance of life in gene- 

 ral, 7 ; in the history of man, 

 10 ; in the growth of civilization, 

 12 ; in government, 13 ; in lan- 

 guage, 17 ; in painting and sculp- 

 ture, 20; in poetry, music, and 

 dancing, 24; statement of the 

 principle which determines pro- 

 gress of every kind, 32; the prin- 

 ciple of progress illustrated in 

 geological phenomena, 35 ; in 

 chemical, 40 ; in organic evolu- 

 tion, 42 ; in social advancement, 

 50 ; in use of locomotive en- 

 gine, 54; this principle does not 

 explain things in themselves, 

 58 ; progress of science, 141 ; 

 of astronomical discoverv, 165, 

 171. 



Progress of animals and societies in 

 forming channels of communica- 

 tion, 404. 



Psychology, relation of English 

 tiiought to, 289; classification in, 

 for the present, must be provis- 

 ional, 288, 289. 



E 



Eeasonin^, natui-e of, 150; basis of, 

 154; advances with classification, 

 157. 



Eeformers, eccentricities o^ 61 ; why 

 necessary, 93 ; not selfish, 95, 97 ; 

 difficulties of social, 110. 



Eeform, how is it to be efi'ected? 

 111. 



Eeligion aided by inquiry, 58. 



Eeligious ideas, account of primi- 

 tive, 6ii. 



Saturn, rings of, 276. 



Satellites, fistribution of, 272-276. 



Savage men need a savage deity, 

 43i. 



Science, limits of, 58 ; definition of, 

 119 ; when complete, 120 ; test of 

 the depth of, 122 ; slow growth 

 of, 123 ; duplex progress ot\ 141 ; 

 ultimate analysis of exact, 160. 



Sciences, early simultaneous ad- 

 vance of, 165; not independent 

 of each other, 186 ; aid each other 

 by analogies, 181 ; mutual influ- 

 ence of modern, 178. 



Sculpture and painting, origin of, 

 20. 



Solar System, movements of planets 

 on their axes in, 267-271. 



Strata now forming, lithological dif- 

 ferences in, 335 ; differences in 

 the order of superj^osition of, 336 ; 

 differences in the organic remains 

 of, 337. 



Societies and individual organisms, 

 points of agreement between, 379- 

 381 ; differences of, examined, 381- 

 385. 



Social intercourse, philosophy of, 

 105. 



Social changes, true source of, 374. 



Spectrum analysis, 283. 



Spiral nebula, '255. 



Steam-engine, multiplied effects of, 

 53. 



Sun, constitution of, 282, 284 ; rela- 

 tion of plane of its equator to 

 plane of planetary orbits, 266. 



Telegraph wires, comparison of to 

 nerves, 415. 



