516 



INDEX. 



nies the kinship between ptilosophy 

 and common-sense, i. 124. 

 Ileineccius, his definition of status, iL221, 

 Heliconias, ii. 26. 

 Hellenic political system, cause of ita 



premature overthrow, ii. 218. 

 Helvetius, i. 118. 

 Heunell, Sara, ii. 503. 

 Heraldeitos, his belief that the universe 



is in a ceaseless flux, i. 312. 

 Heredity as an element in the organiza- 

 tion of experiences, ii. 149. 

 Heresy, its social value, ii. 272. 

 Herschel, Sir W., his theory of the con- 

 stitution of nebulae, i. 386. 

 Heterogeneity defined, i. 336. 

 Heterogeneity of society as checking 



warfare, ii. 251. 

 Hipparchos, i. 199. 

 Hipparion and its kindred, L 452. 

 Hippokrates, i. 224. 

 Hobbes, i. 117, 121, 211 ; his conception 



of society as a Leviathan, ii 226. 

 Holbach, i. 118. 

 Homesickness, ii. 328. 

 Homogeneity defined, 1. 336. 

 Homogeneous, instability of, i. 353. 

 Horse, pedigree of, ii. 242. 

 Huggins, W., determines the proper 

 motion of Sinus, i. 207 ; demonstrates 

 the gaseous condition of iiTesolvable 

 nebulae, i. 386.' 

 Humanity, leligion of, ii. 417._ 

 Humble-bees and red clover, L 308. 

 Hume, i. 47, 86, 118, 127, 155. 

 Hunter, W. W,, on religion of Santals, 



ii. 458. 

 Hutton, R. H., his misinterpretation of 



Mr. Spencer, ii. 339. 

 Huxley, T. H., i. 129, 164, 166, 175, 185, 

 227, 232, 247, 262 ; his classification of 

 animals, i. 450 ; his remark about final 

 causes, ii. 384. 

 Huyghens, his theory of light, 1. 130. 

 Hybrids, infertility of, ii. 44. 

 Hydra, its ability to distinguish light 



from darkness, ii. 90. 

 Hygienic fallacies, i. 150. 

 Hypothesis, its requisites, i. 137, 266. 



IcHTHTOSATTRtANS and whales, ii. 58. 

 Iconoclasm as illustrating statical habit 



of thought, ii. 476. 

 Ideal types of manhood in ancient and 



modern times, ii. 207. 

 IdeaUsm, L 45, 74—90. 

 Ideas and sensations, ii. Ill* 

 Ideational centres, IL 137» 



Identity of contradictories, how far troa^ 



i. 119. 

 Ign.es fatui, fetishistic interpretation of, 



i. 197. 

 Ignorance consists in failure to classify, 



i 31. 

 Immobile civilizations, explanation of, ii. 



276. 

 Inconceivable, ambiguity of the word, i, 

 61 ; difference between inconceivable 

 and incredible, i. 62. 

 Inconceivability-test, what is meant by 



it, L 69 ; ii. 162. 

 Increase of plants and animals, high rate 



of, ii. 11. 

 Individuals, their influence in history, ii. 



237. 

 Individuation, ii. 95, 223. 

 Induction, its weakness illustrated by 



Newton's discoveries, i. 266. 

 Infancy, origin of, ii. 159, 342 ; how the 

 prolongation of it gave rise to society, 

 ii. 344, 360, 369. 

 Infants, crying of, i. 104. 

 Infinite, the, i. 7, 13. 

 Inflexibility of mind in lower races, ii 313. 

 Innate ideas, i. 46, 101, 115 ; ii. 161. 

 Inorganic physics, how divided by Comte, 



i. 192. 

 Insects, origin of, i. 345 ; their relations 



with flowers, ii. 28. 

 Instability of the homogeneous, i. 353. 

 Instinct, inheritance of, ii. 150 ; how dis- 

 tinguished from reflex action, ii. 152 ; 

 how it merges into reason, ii. 154. 

 Integration defined, i. 336 ; degree of, an 

 important test in classification, i. 347. 

 Intuitional knowledge, ii. 161. 

 Isolation, its effects upon social develop- 

 ment, ii. 276. 

 Isomeric transformations in nerve-fibres, 

 iL136. 



Jacobintsm, origin of, iL 476 ; tendency 

 toward social dissolution, iL 482. 



Jaws, diminution of, ii. 320. 



Jesuit missionaries in Paraguay, ii. 304. 



Joule's discovery of the mech£tnical equi- 

 valent of heat, i. 34, 203. 



Julian, ii. 490. 



Jupiter, his physical condition, i. 377. 



Juristic writers of the seventeenth cen- 

 tury, ii. 280. 



Kant, i. 24; asserted the relativity ol 

 knowledge, i. 48 ; his inconsistency, L 

 52, 118; reconciliation of his phU» 



