626 



INDEX 



Russo, 502 



Rust in wheat, 358 



Sachs, 421 



Sadler, 484 



Saint-Hilaire, Etienne Geoffjoy, 367 



Salisbury, Lord, on natural selec- 

 tion, 334 



Sandeman, George, on congenital 

 and acquired characters, 177 



Sanson on telegony, 145 



Schliiter, Dr. R., on congenital 

 tuberculosis, 284 



Schmankewitsch, experiments, 213 



Schultze, 485 



Secondary effects of disease, 269 



Seed-reversion, 136 



Segregation, law of, 339 



Selection, 530 ; and stimulus, 243 ; 

 Mendelism, 369 



Settegast on telegony, 145, 194, 227 



Sex, heredity, and 472 ; determina- 

 tion of, 475 ; what it means, 



473 



Shoemaker, anatomical peculiari- 

 ties of, 208 



Short-sightedness, 272 



Silkworms, experiments with 359 



Snails, experiments with, 360 



Social aspects of heredity, 510 



Sociology, relations of biology and, 

 512 



Sociomorphism, 366 



Somatic cells and germ-cells, differ- 

 ence between, 10 1 ; modifica- 

 tions, 172 



Sommer, Max, experiments, 235 ; 

 results, 236 



Species, elementary, 94 ; hybrids, 

 382 



Spencer, Herbert, on acquired cha- 

 racters, 166, 181, 183, 194, 205, 

 237; on telegony, 145, 146; on 

 plant-modifications, 212 ; his 

 theory of physiological units, 399, 

 454 



Spermatogenesis, 48 



Spermatozoon, the typical, 39, 40 



Spore-formation, 418 



" Sports," jy 



Sprenger, 97 



Standfuss, hybridisation of butter- 

 flies, 214 



Staples-Brown, R., 361 



Starkweather, 486 



Star primrose, origin of, 86 



Statistical methods, 309, 425 ; re- 

 sults, 332 



Stature, inheritance of, 112 



Stephens, 113 



Strasburger, Prof., on fertilisation 

 in higher plants, 63 ; material 

 basis of inheritance, 426 



Sutton on combinations of chro- 

 mosomes 103, 104 



Syphilis, " hereditary " or " con- 

 genital," 185, 286 



Telegony, 143 ; representative al- 

 leged cases of, 145 



Thaer, 229 



Theological theories of heredity, 394 



Tietz, 224 



Toe, dwindling of little, 210 



Tours, Moreau de, 282 



Tower, W. L., 105, 376, 377 



Toxins, 219 



Toyama, 354, 359 



Transient adjustments, 174 



Transmission of acquired charac- 

 ters, 164 ; hypotheses as to 

 mechanism of, 199 ; Spencer's 

 theory, 199 



Trophoplasm, 430 



Tschermak, 337, 354 



Tuberculosis, 283 



Tulase, 271 



Turner, Sir William, on telegony, 

 154; on transmission of acquired 

 characters, 195 ; on haemophilia, 

 272 ; on abnormalities, 2S7 



