INDEX 



621 



Degrees of transmissibility, 191 



Dejerine, 291 



Delage, Prof. Y., 27, 54-5, 64, 145, 

 160, 224, 225, 420, 446, 454 



Delamare, 234 



Democritus, 399 



Dendy, 371 



Determinants and determinates, 

 434. 435 I breaking up of deter- 

 minants, 442 ; objections to theory 



of, 445 



Determination of sex, 475 ; classi- 

 fication of theories of, 480 



Development, theory of, 392,440; 

 arrests of, 125 ; heredity and, 

 412 



Differential division, 422, 441 



Dingfelder, 224 



Directive factors in evolution, 526 



Discontinuity in variation, 82, 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 



Doncaster, 321, 497 



Driesch, Dr. Hans, 62, 413, 417, 

 421, 424 



Dupuy, 234 



Duration of life, 334 



Ehrenberg, 87 



Eisen on complexity of the nucleus, 

 28 



" Elementary Species," 94 



Entelechy, 413 



Environment, relation between or- 

 ganism and, 174 



Epigenesis, 416 



Errera, Prof. I.., experiments with 

 moulds, 187 



Evening primrose, 91 



Evolutio, 416 



Evolution, general theory of, 12 ; 



new view of, 367 

 Ewart, Prof. Cossar, 103, 138 ; on 



telegony, 146, 147, 149, 152, 157 

 Exclusive inheritance, 385 

 Experimental school, 425 

 External heritage, man's, 246, 249 



Famine, Irish, 162 



Farabee, 287 



Farr, Dr., 526 



Fay, E. A., 256 



Felkin, R. W., 77 



Fere, 274 



Fertilisation, 60, 62, 440 



Filial regression, 142, 314, 522 



Finn, Mr. Frank, on telegony, 149, 



Fischer, experiments on butter- 

 flies, 214 



Fluctuations, cumulative effect of, 

 80 ; and mutations, 90, 95 



Focke on xenia, 1 59 



Food as a factor in sex-determina- 

 tion, 482 



Foster, Sir Michael, 43 



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

 314, 315, 404, 408 



Galtonian v. Mendelian theories, 

 330-32, 37i 



Galton's law of ancestral inherit- 

 ance, 323, 327, 522 



Gametes, segregation of, 344 



Gautier, 273 



Gemmules, Darwin's theory of, 450 



Germ-cells, nature and origin of, 

 7,7 ; maturation of, 45, 48 ; 

 completely equipped potential 

 organisms, 56 ; apartness of, 

 197 ; uniqueness of, 399 



Germinal continuity, theory of, 42, 

 407 



— selection, 454, 459 



— variations, 169 



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