560 



HEREDITY AND SELECTION IN SOCIOLOGY 



Conflict, increase of, with modem 

 social conditions, 405, 471 

 not at present waged under 



ideal conditions, 470 

 the effect of Socialism on, 476 

 and national welfare, 478, 479 

 Consanguinity, 109 



produces monotony of the germ- 

 plasm, 110 

 theoretical explanation of con- 

 sanguineous degeneracy. 111 

 among the Jews, 118 

 results of, intrinsically indif- 

 ferent, 119 

 Consciousness facilitates adapta- 

 tion, 542, 543 

 Cope, and germ-plasm, 26 



Daphnids, peculiarities of the re- 

 production of, 37 

 Darwin and social evolution, 1, 2 

 and the factors of his doctrine 



of descent, 3, 9 

 on excessive fecundity, 4 

 and germ-plasm, 26 

 effects of his theory on adapta- 

 tion, 66 

 theory of, developed by Weis- 



mann, 177 

 on hybridism, 122, 123 

 compared with Weismann, 185 

 Death, a physiological phenomenon, 

 150 

 an institution for the benefit of 



the species, 260 

 a phenomenon of adaptation, 

 423 

 De Fleury, Maurice, on the trans- 

 mission of epilepsy, 70, 83 

 Delage, Yves, on determinants, 31 

 on consanguinity, 111 

 on adaptation and selection, 



147, 148, 149 

 on the effect of climate on 

 variations 435 

 Desires of individual, unlimited, 



226, 227 

 Determinant energy, source of, 34 

 Determinants, action on the ids, 

 28 

 of two corresponding organs 



are homologous, 30 

 autonomy of, 32 



Determinants, active and passive, 

 33 

 note on, 89 



and germinal selection, 41 

 nutrition of the, 47 

 alterations in the balance of, 



48 

 of an essential character be- 

 come ascendant rather than 

 regressive, 52 

 Development, subject to operation 

 of natural selection, 177, 179 

 standard of, lowered by preser- 

 vation of the unfit, 262 

 De Vries, on mutations, 4, 57, 132, 

 146 

 and germ-plasm, 26 

 on deep-sea fishes, 148 

 Diet, effect of, on physiological ac- 

 tivity, 259 

 Dietzel, on individualism, 455 

 Differential division of the id, 82 

 Differentiation between ego and 



non-ego, 225 

 Diseased members not eliminated 



from society, 262, 263 

 Division of labour, just, incom- 

 patible with present economic 

 conditions, 232 

 and selection, 355 

 requires sacrifice of individual 



interests, 488 

 discussion of the problem of, 



487-491 



increases in proportion to the 



complexity of the organism, 



or society, 489 



Domestic institutions, origin of, 251 



Drunkenness, affecting the working 



classes, 277 

 Durkheim, Professor, and the indi- 

 vidual in sociology, 182 

 on the value of religion in 

 social life, 509, 510 

 Dynamic conception of social evolu- 

 tion, 443 



Early marriage. See Marriage 

 Economic activity, increase of, in 

 relation to the diminution of 

 Chm-ch power, 236, 237 

 competition, 453 

 power, the development of, 239 



