4.3-S 



INDEX. 



course of discharge unguidcd by 

 purpose, 2ol. 



Number, origin of conception of, 

 151. 



Okcn s classification of knowledge, 

 125. 



Painting and sculpture, origin of, 

 20. 



Paleontology neither proves nor dis 

 proves development, JJ55, 3G1. 



Picturesque, meaning of, 421. 



Plato s model republic, central idea 

 of, 37G. 



Previsions and ordinary knowledge, 

 117; previsions known us science, 

 11 s *; common and scientific, 123 ; 

 when quantitative arose, l.&quot;&amp;gt;8; in 

 crease in precision, 171. 



Primary divisions of a germ and of 

 a society, 3 .2-3 J5. 



Progress, current meaning of, 1 ; 

 present inquiry concerning, 2 ; 

 law of progress exemplified in the 

 genesis of solar system, 3; in the 

 phenomena of the earth s crust, 

 6 ; in the advance of life in gene- 

 nil, 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, Jo; in poetry, niusic^ and 

 dancing, 21; statement ot the 

 principle which determines pro 

 gress of every kind, 32; the prin 

 ciple of progress illustrated in 

 geological phenomena, 3,&quot;) ; in 

 chemical, 4&quot;; in organic evolu 

 tion, 42 ; in social advancement, 

 50 ; in use of locomotive en 

 gine, 5-1; this principle does not 

 explain things in themselves, 

 58 ; progress of science, 141 ; 

 of astronomical discoverv, 10.&quot;), 

 171. 



Progress of animals and societies in 

 forming channels of communica 

 tion, 4&quot;H. 



Psychology, relation of English 

 thought to, 28;i ; classification in, 

 for the present, must be provis 

 ional, 233, 289. 



B 



Reasoning, nature of, 150; basis of, 

 1&quot;&amp;gt;4; advances with classification, 

 157. 



Reformers, eccentricities of, Gl ; why 

 necessary, J3 ; not selfish, . 5, U7 ; 

 difficulties of social, llo. 



Reform, how is it to be effected? 

 111. 



Reliirion aided by inquiry, 5 s *. 



Religious ideas, account of primi 

 tive, GG. 



Saturn, rings of, 27 . 



Satellites, distribution of, 272-27(5. 



Savage men need a savage deitv, 

 431. 



Science, limits of, 5s; definition of, 

 ll .i; when complete, 120; test ot 

 tin: depth of, 122; slow growth 

 of, 123; duplex progress of, Ml; 

 ultimate analysis of exact, 1GO. 



Sciences, early simultaneous ad 

 vance of, 1G5; not independent 

 of each other, !*&amp;lt;&amp;gt; ; aid each other 

 by analogies, 181 ; mutual influ 

 ence of modern, 17*. 



Sculpture and painting, origin of, 

 2o. 



Solar System, movements of planets 

 on their axe.-; in, 2G7 271. 



Strata now forming, lithologieal dif 

 ferences in. 33.&quot;) ; differences in 

 the order of superposition of, 33ii ; 

 differences in the organic remains 

 of, .&quot;,37. 



Societies and individual organisms, 

 points of agreement between, 370- 

 3S1 ; 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, 26G. 



Telegraph wires, comparison of to 

 nerves, 415. 



