INDEX 



539 



Genes, 107 



Genius, and physical defects, 



366 

 hereditary, 212 

 unstable nervous organiza- 

 tion, 212 

 Genotype, 102, 247, 249, 250 



254, 345, 392 

 Geographical isolation, 432 

 Geotropism, of seedling, 59 

 German Emperor, number of, 



ancestors, 223 

 Germ cells, 8, 110 

 alive, 9 



complexity of, 194 

 possibilities determined in, 



464 

 potential personalities in, 



455 

 reactions of, 480 

 Germ nuclei, 28 



individuality of, 121, 122 

 Germ-plasm, in nucleus, 129 

 Theory of Weismann, 101- 



103, 343, 344 

 Germ vs. Soma, 101 

 "Germ track," diagram of, 



101 

 Germinal Continuity, 98-103 

 Glandular secretions, effects of, 



337-339 

 Glaucoma, 304 



Goddard, feeble-mindedness in- 

 herited, 212 

 Goldschmidt, 157, 510, 513 

 Gonia, 134 

 Grafts, not modified by stock, 



350, 351 

 Great men, in crises, 490 

 Greece, decay of, 501, 502 

 Greeks, ancient, 418-421 

 Growth period, 135 

 Gudernatsch, effects of food 



on tadpoles, 334 

 Guinea-pigs, recombinations of 



characters, 392-595 



transplanted ovaries, 350- 



354 

 Guthrie, transplanted ovaries, 



350 

 Guyer, on chromosomes of 



man, 153 



Habits, definition, 363 



good and bad, 363-365, 480 

 Hacker, 510 



Haeckel, plastidules, 106 

 Haemophilia, 209, 281, 304 

 Hair, color, 301 



form, 297, 301 

 Half castes, of Australia 433 



of New Zealand, 433 

 Hansen, mutations of yeast, 



357 

 Haploid number of chromo- 

 somes, 143 

 Hardship, educational value of, 



364, 491 ' 

 Harris, induction effects of 



poor soil, 357 

 Harrison, on transplanted 

 limbs, 341 

 graft of tadpoles, 350, 351 

 Harvey, epigram, 9 



epigenesis, 86 

 Hatschek, cleavage and gas- 

 trulation of Amphioxtjs, 

 24 

 larvae of Amphioxtjs, 25 

 Hereditary lines, interwoven, 



504 

 Hereditary Resemblances and 

 Differences, 199, 200, 

 213-220 

 Heredity, and memory, 356 

 and variation, 200, 218 

 definition of, 96, 109 

 includes assimilation, etc., 



169 

 mechanism of, 111 

 more potent than environ- 

 ment, 454 



