Index 



593 



Buskin, 482 



Butherford, E., 570-576, 581 



Butot, 130 



Sachs, J., Ill 4 , 210, 223 



St Hilaire, E. G. de, 8, 13, 16 



Salamandra atra, 269 



S. maculosa, 269 



Saltatory Evolution, 22-25 (see also Muta- 

 tions) 



Sanders, experiments on Vanessa by, 50 



Saporta, on the Evolution of Angiosperms, 

 313, 316 



Sargant, Ethel, on the Evolution of Angio- 

 sperms, 208 s 



Savigny, 531, 532 



Scardafella inca, 280, 281 



Scent, in relation to Sexual Selection, 296 



Scharff, B. F., 302* 



Schelling, 5, 6, 448, 449 



Schlegel, 515 



Schleicher, A., on language, 526-528 



Schleiden and Schwann, Cell-theory of, 

 137 



Schmarda, L. K., on geographical distri- 

 bution, 321 



Schoetensack, on Homo heidelbergensis, 

 129 1 



Schreiner, K. E., HO 2 



Schubler, on cereals, 243 



Schultze, 0., experiments on Frogs, 262 



Schur, 560 



Schutt, 25, 26 



SCHWALBE, G., on The Descent of Man, 

 112-136 



Sclater, P. L., on geographical distri- 

 bution, 321-324, 327 



SCOTT, D. H., on The Palaeontological 

 Eecord (Plants), 200-222 



189 2 



SCOTT, W. B., on The Palaeontological 

 Record (Animals), 185-199 



Scrope, 357, 373 



Scyllaea, 279 



Sechehaye, C. A., 516 1 



SEDGWICK, A. , on The Influence of Darwin 



on Animal Embryology, 171-184 

 Sedgwick, A., Darwin's Geological Expedi- 

 tion with, 343, 344 

 Seeck, 0., 536 1 



Seed-plants, origin of, 209-213 

 Segregation, 92, 93 

 Selection, artificial, 19, 20, 32, 35, 67, 118, 



469-471 

 _ germinal, 27, 28, 36-40, 49 



Selection, natural (see Natural Selection) 



- organic, 41, 428, 429 



- sexual, 43-49, 116, 117, 277, 292-297, 

 417 



social and natural, 470 



18-65, 96, 125, 126 

 Selenka, 127 

 Semnopithecus, 127 

 Semon, B., 22, 142 

 Semper, 368 

 Senebier, 223 

 Senecio vulgaris, 421 

 Sergi, 131, 135 



Seward, A. C., 1, 71 3 , 312, 314, 317 



- and S. O. Ford, 212 1 



and J. Gowan, 201 2 



Sex, recent investigations on, 93, 94 



Sharpe, D., 373 



Sherrington, C. S., 523 



Shirreff, P., 80, 82 



Shrewsbury, Darwin's recollections of, 340, 



341 



Sibbern, 449 

 Sinapis alba, 415 

 Smerinthus ocellata, 29 

 S. populi, 29 

 S. tiliae, 29 

 Smith, A., 448 

 Smith, W., 185 

 Snyder, 256 

 Sociology, Darwinism and, 465-476 



History and, 535 

 Soddy, 573 



Sollas, W. J., 128, 129, 369 

 Sorley, W. B., 461 



Species, Darwin's early work on trans- 

 mutation of, 350-353 



geographical distribution and origin of, 

 322, 323 



immutability of, 323 



influence of environment on, 240-246 



Lamarck on, 244 



multiple origin of, 323, 324 



the nature of a, 226, 227 



polymorphic, 69, 70 



production by physico-chemical means 

 of, 270 



and varieties, 69, 94, 95 



de Vries's work on, 241, 242 

 Spencer, H., on evolution, 451-456 



on Lyell's Principles, 338 



on the nature of the living cell, 227 



on primitive man, 501 



on the theory of Selection, 32 



on Sociology, 468 



