INDEX 



599 



Delage, Prof. Y., 27, 54-6, 65, 145, 

 160, 224, 420, 450, 458 



Delamare, 234 



Democritus, 403 



Dendy, 374 



Determinants and determinates, 

 435 ; breaking up of determin- 

 ants, 446 ; objections to theory 

 of, 449 



Determination of sex, 204, 476 ; 

 classification of factors in, 486 



Development, theory of, 9, 396 ; 

 arrests of, 125; heredity and, 



417 

 Differential division, 426, 445 

 Dingf elder, 224 



Directive factors in evolution, 526 

 Discontinuity in variation, 81, 370 

 Disease, heredity and, 250 ; what is, 



251 

 Diseases due to innate predisposi- 

 tions and acquired modifications, 

 252 

 Dogs, telegony in, 146 

 Domestic animals, size in, 216 

 Dominance, 338, 353 

 Dominant characters, 357 

 Dominants and recessives, 118 

 Driesch, Dr. Hans, 65, 417, 421, 



425-6 

 Dupuy, 232 

 Duration of life, 332 

 Duthie, Mr., of CoUynie, 380 



Ehrenberg, 87 



Eisen on complexity of the nucleus, 

 28 



" Elementary Species," 94 



Entelechy, 417 



Environment, relation between or- 

 ganism and, 174 



Epigenesis, 419 



Errera, Prof. L., experiments with 

 moulds, 187 



Evening primrose, 91 



Evolutio, 419 



Evolution, general theory of, 12 ; 



new view of, 370 

 Ewart, Prof. Cossar, 103, 117, 138 ; 



on telegony, 146, 147, 149, 



153, 157 

 Exclusive inheritance, 385 

 Experimental school, 429 

 External heritage, man's, 247, 249 



Famine, Irish, 162 



Farabee, 287 



Farr, Dr., 522 



Fay, E. A., 256 



Felkin, R. W., 77 



Fere, 276 



Fertilisation, 60, 62, 442 



Filial regression, 142, 314, 518 



Finn, Mr. Frank, on telegony, 149, 



151 



Fischer, experiments on butter- 

 flies, 215 



Fluctuations, cumulative effect of, 

 81 ; and mutations, 90, 96 



Focke on xenia, 159 



Food as a factor in sex-determina- 

 tion, 490 



Foster, Sir Michael, 44 



Galton, Fr., 14, 15, 43, 70, 82, 168, 



312, 315, 408, 412 

 Galtonian v. Mendelian theories, 



334-5. 374 



Galton's law of ancestral inherit- 

 ance, 323, 328 



Gametes, segregation of, 347 



Gautier, 275 



Gemmules, Darwin's theory of, 454 



Germ-cells, nature and origin of, 

 38 ; maturation of, 45, 48 ; 

 completely equipped potential 

 organisms, 56 ; apartness of, 

 197 ; uniqueness of, 395 



Germinal continuity, theory of, 42, 

 411 



— selection, 458, 467 



— variations, 169 



