542 



THE LAWS OF HEREDITY 



Filial regression, law of, 134 



Fluctuations, 150, 506 ; blending of, 176 ; as 



causes of racial change, 179, 183-4 

 Food-supply, 269 ; in manufacture of alcohol, 



298 



Fovea centralis of eye, 412 ; of attention, 413 

 Fowler, I. , on knowledge by causes, 54 

 Fowls, Mendelian traits of, 155, 156, 157, 160, 



165, 167, 172 

 Frog, instincts of, 381 

 Froude, on disease in West Indies, 280 

 Fry, Sir J., on increase of insanity, 471-2 

 Function, of cells, i ; of sex, 197 ; definition 



of term, 188 



GALTON, Sir F., on Law of Ancestral Inheri- 

 tance, 126 et seq. ; on kinds of inheritance, 



^ 1SI 

 Gamete, 153 



Gametic purity, 157 



Garden plants, variability of, 100 



Gartner, on latent characters, 176 



Genetics, new science of, 188 



Geniality, 429 



Genius, 426 



Geology, systematic, 33 



Geometry, 343, 347, 480, 503 



Germans, ancient drinking customs, 304-5 



Germ-cells, 2 ; potential immortality of, 5 ; 

 cause of numbers of, 96 ; alleged in- 

 violability of, 264 



Germ-plasm, nature of, 3 ; continuity of, 5, 

 124, 134 ; quantitative and qualitative 

 division of, 17-8 ; necessity of thinking in 

 terms of, 15, 25 ; causation of variations in, 

 80 et seq. ; resistance to direct action of 

 environment, 92 et seq. ; as living entity, 98 



Germinal selection, 109 ; changes, 221-2 



Gibbon, on drinking customs of Ancient 

 Germans, 304 



Gilbey, Sir A., on race-horses, in 



Gordon, Dr H. Laing, on drinking in Italy, 

 301 



Gout, transmission of, 74 



Gravitation, law of, 47, 352, 360 



Greece, drinking in, 300 ; teaching in, 490-1 



Growth, factors of, 6, 422, 438 ; of mind and 

 body compared, 420, 477 



Growth-force, 60 



Guinea-pigs, susceptibility to tuberculosis, 



2 55 

 Gulick, Rev. J. T., on snails, 202 



H 



HABITS, 401 et seq. ; 483, 515 

 Habituation to toxins, 247, 253 

 Haemophilia, alleged transmission of, 75 

 Hair-colour, 145, 428 

 Hair-texture, 174-5 

 Halteridium, 81 

 Hapsburgh lip, 181 

 Hare, Dr F., on deduction, 30 

 Hartog, Prof. M., on transmission of acquire- 

 ments, 74 



Harveian Society, on alcoholism, 295 

 Hawkweeds, parthenogenesis in, 148' 

 Heart's-ease, evolution of pansy from, 112 



Henslow, Prof. G. , on transmission of 

 acquirements, 74 



Hereditary tendencies, definition of, 3 ; altera- 

 tion of, 79 



Heredity, material for study of, 34 ; not an 

 exact science, 35-6 ; experimental study of, 

 34 et seq., 184, 510; greater problems of, 

 216-7 



Hermaphrodite, 143, 146 ; human, 146 



Herschell, on science, 37 



Hewitt, on variations in ducks, 83; on rever- 

 sion in bantams, 165 



Hinny. 157 



Hipparion, hoofs of, 123 



Hippuris, 60 



History, life-, 24 



Historians, on disease, 276-7 



Hodgson, Dr, on Idealism, 336 



Hoffmann, experiments on plants, 83 



Homer, on drinking, 300 



Horse, retrogression in, 123 ; American trot- 

 ting, 179 ; latent traits in, 196 



Human beings, mutations of, 175, 179 ; racial 

 differentiation, 180-1 ; racial crossings, 173 

 et seq., 200-1 ; as subjects for study, 216, 

 220-1 ; errors about racial changes of, 223 ; 

 lack of instinctive movements, 378-9 ; distin- 

 guishing peculiarity, 424 ; adaptability, 

 381, 428; ways of improving, 438-9; arti- 

 ficial selection of, 439 



Hume, on mind, 335 



Hunger, instinct of, 384 



Hunter, Dr W., on maternal impressions, 75 



Hurst, Mr C. C. , experiments on poultry, 

 156 ; on rabbits, 163 



Huxley, method of work, 185 ; on necessary 

 truth, 349 ; on science, 351 ; on relation of 

 mind to body, 356-7 ; on curates, 478 



Huxley lecture, 428 



Hybridization, almost confined to artificial 

 varieties, 176 



ffydroitte, 27 



Hypotheses, 39-40 ; untested, 49-50 ; of 

 chemists and physicists, 50 ; bathmic, 60 ; 

 nature of, 512 



IDEALISM, definition of, 324 ; thorough going, 

 333 ; futility of, 334, 336, 338, 360 



Idiot, mind of, 389, 425, 465 et seq. 



Imagination, the scientific, 52, 89 



Imbecility, 53 ; as variation, 425 ; nature, 425, 

 465 ; in slums, 447 ; causation, 472-3 ; pre- 

 vention, 475 



Imitativeness, 385 



Immunity, inborn and acquired, 233, 235, 253, 

 254, 257 ; conditions of, 237, 248 ; active 

 and passive, 241 ; Pasteur's hypothesis 

 243 ; Cheauveau's, 243 ; Behring's, 243 et 

 seq.; Ehrlich's, 251 et seq.; in acute and 

 chronic disease, 257 ; inference of conse- 

 quences from, 258-9 ; evolution of, 225 ; 

 meaning of term, 309 ; artificially de- 

 veloped or evolved, 450, 453, 455 



Impure dominants, 153 



Inborn and acquired characters, true distinc- 

 tion between, 16-7 ; general failure to dis- 

 tinguish between, 439-40 



