566 



HEREDITY AND SELECTION IN SOCIOLOGY 



Organism, immortality of unicellu- 

 lar, 150 

 OverfertUity, a factor of selection, 



354, 357 

 Overpopulation and social misery, 



note on, 380 

 Ovocyte, the result of reproduction 



of the egg-cell, 19, 20 

 Ovum, the work of, ia amphimixis, 

 28 

 organic identity with the sper- 

 matozoon, 39 



Pacifism, development of, 242 

 Pandorina, an example of Algse, 12, 



13 

 Panmixia, law of, affecting social 



deterioration, 262 

 Papacy, part played by, in evolution 



of Europe, 398, 400, 512 

 Paralysis, general iucrease of, 273 

 a cause of the increase of in- 

 sanity, 273 

 caused by alcoholism, 278 

 maximum rate reached in May, 

 280 

 ParasyphUis, danger to society, 289 

 Parents, hereditary influence of, 161 

 Parthenogenesis, reproduction of 

 certain species by, 24, 109 

 artificial, 25 



ovetical explanation of, 112 

 produces monotony of germ- 

 plasm, 116 

 Parthenogenetic eggs, maturation 



of, 22 

 Pathological phenomena, the result 



of civilisation, 471 

 Perfection, must always be under- 

 stood in a relative sense, 425 

 Personal selection, effect of, on 

 variations, 48 

 importance of, 56 

 Pessimism, a cause of social disin- 

 tegration, 241 

 Philosophy, influence of the schol- 

 astic, on psychological and social 

 evolution, 398 

 Phthisis, a selective agent, 345 

 Phyllodes ornata, an example of 



adaptation, 53, 54 

 Physiocrats, the intellectual ances- 

 tors of economic Liberalism, 452 



Physiological adaptation, slowness 



of, 435 

 Plants, self-fertilisation of, 107 

 Plastogamy, 104 



Polar body, the result of reproduc- 

 tion of chromosomes, 19, 21 

 Predestination, as distinct from pre- 

 formation, 42 

 Predisposition to disease, the here- 

 dity of, 4 

 Private property, a factor of social 



inverse selection, 324 

 Progress, dependent on coiiflict, 

 355, 356, 477 

 in tradition must be preceded 

 by progress in organic evolu- 

 tion, 432 

 necessity for combining bio- 



logiceJ and traditional, 433 

 traditional is faster than organic, 

 434 

 Prolongation of life, a result of im- 

 proved sanitary conditions, 340 

 Protophyta, 11 

 Protozoa, 11 



immortality of the, 27, 423 

 Psychological phenomena, the re- 

 sult of social life, 224, 225, 

 226 

 Psychology, its relation to physio- 

 logy, 222 



Quatrefages on intercrossing, 120 



Races, extinction of inferior human, 

 154 

 inadequacy of the expanding 

 power of inferior, 367 

 Eachitism, the result of syphilis, 



300 

 Racial deterioration, 351 



factor, the fundamental condi- 

 tion of social evolution, 1 

 progress. See Biological pro- 

 gress 

 Easeri, statistics on fertility, 331, 



332 

 Rationalism, affords insufiScient 

 sanction for conflict, 506 

 insuflSciency of, 522, 523 

 Rechtsstaat, theory of the, 451 

 Reclus, Elis^e, on Communism, 475, 

 476 



