370 



Index 



reactions of, 38, 42, 329 



specific, 172, 177 

 Germ nuclei, 21 



Individuality of 140, 141 

 Germplasm, in nucleus, 127 



Theory of Weismann, 127, 238 

 Germplasm vs. Somatoplasm, 126, 127 

 "Germ track," diagram of 126, 149 

 GERMINAL BASES OF MIND, 36 

 GERMINAL CONTINUITY, 125 

 Glandular secretions, effects of, 232 

 Glaucoma, 69, 118 

 GODDARD, feeble-mindedness inherited, 



71 

 GOLDSCHMIDT, sex determination, 169 



sex hormones, 169 

 Gonia, 148 



Grafts, not modified by stock, 241, 242 

 Great men, in crises, 335 

 GREECE, decay of, 340, 34i 

 GREEKS, ancient, 293, 294 

 Growth period, 148 

 GUDERNATSCH, effects of food on tad- 



poles, 230 



Guinea-pigs, recombinations of char- 

 acters, 270, 271 



transplanted ovaries, 241, 242, 243 

 GUTHRIE, transplanted ovaries, 242 

 GUYER, on chromosomes of man, 162 

 GUYER and SMITH, inheritance of in- 

 duced eye defects, 247, 248 

 Gynandromorphs, 169 

 Gypsy moth, sex determination, 169 

 HABITS, definition, 250 



good and bad, 250, 330 

 HAECKEL, plastidules, 129 

 HAEMOPHTLA, 68, 119, 188 

 Hair, color, 115, 116, 117 



form, 117 



white forelock, 116 

 Half castes, of Australia, 301 



of New Zealand, 301 

 Haploid number of chromosomes, 156 

 Hardships, educational value of, 251 



335 

 HARRIS, induction effects of poor soil, 



246 

 HARRISON, on transplanted limbs, 236 



graft of tadpoles, 241, 242 

 HARVEY, epigram, 6 



epigenesis, 58 



HATSCHECK, cleavage and gastrula- 

 t-ion of AMPHIOXUS, 22 



Hereditary lines, interwoven, 342 

 HEREDITARY RESEMBLANCES, 65 



DIFFERENCES, 72 

 Heredity, and memory, 245 



and variation, 65, 75 



confused ideas of, 123 



definition of, 132 



mechanism of, 131, 133, i/i 



more potent than environment, 



313 



possible improvements, 343 

 theories of, 133 

 share of egg and sperm in, 198 

 usually unchanged by environ- 

 ment, 249, 321 



HEREDITY AND DEVELOPMENT, 132 

 HEREDITY, ENVIRONMENT, TRAINING, 



253 



HERING, Organic memory, 45 

 Heritage, definition of, 132 

 Hermaphrodites, 168 

 HERTWIG, O., discovery of fertiliza- 

 tion, 132 

 human ovum, 9 

 idioblasts, 129 



influence on germ cells of X- 

 rays, radium, chemicals, drug 

 habit, 218, 221 



HERTWIG, R., modification of sex ra- 

 tio, 166 

 Heterosis, 274 

 Heterozygosis, 273 

 Heterozygotes, 84, 93, 96 

 HIPPOCRATES, 124 

 HOMO SAPIENS, 287, 250 



NEANDERTHALENSIS, 289 

 Homozygotes, 84, 03, 96 

 "Homunculus," 57 

 HOPPE, Effect of alcohol on germ 



cells, 221 



Hormones, effects of, 232 

 Human embryo, development, 27, 28, 



30 

 HUMAN EVOLUTION, CONTROL OF, 292 



slow, 312 



Human faculties, definition, 250 

 Human Heredity, no improvement in, 



292 



no pure lines, 114, 305 

 Human oosperm, early development, 



27, 28, 30 

 ovum, 9, 10 

 spermatozoa, n 



