3/8 



Index 



Sexual characters, 198 ff. 



Shibata, 93 



Shull, A. F., 214, 224 



Sicyonia, 193 



Side-chain theory, 88, 188 



Smith, Geoffrey, 159, 217 



Smith, Graham, 58 



Spain, K. C., 188 



Spallanzani, 33 



Species, chemical basis of, 40 fif.; 

 specificity of, 41 ff.; incompati- 

 biHty of, not closely related, 



Species specificity, determined by 

 proteins, 63, 68, 348 ; apparently 

 not by nucleins, 69 



Specificity, of grafted tissues, 47; 

 of spermatozoa, 48; of blood 

 sera, 53 ff . ; in fertilization, 71 fif. ; 

 of activation of sperm by eggs, 

 80 ff. 



Spelerpes, 320 



Spermatozoa, fertilization of eggs 

 by, 72 ff. ; activation by eggs 

 of, 80 ff.; agglutination of, 82 

 ff.; cluster formation of, 83; 

 chemotropism of, 92 ff.; cul- 

 tivating of, 126 ff. ; chromosomes 

 of, 198 ff. 



Spirographis, 260 



Spondylomorum, 277 



Spontaneous generation, 33, 38 



Spooner, G. B., 134 



Standfuss, 303 



Staphylococcus pyogenes aureus, 36 



Steffenhagen, K., 55 



Steinach, E., 225 ff., 254, 343 



Stereotropism, 178, 187,283 



Stevens, Miss, 68, 199 



Stimulus, 196 



Stockard, 322, 340 



Strassburger, 260 



Streaming as means of egg differ- 

 entiation, 145, 146 



Strongyloce7itrotus franciscanuSf 50, 

 52, 75, 81 ff., 103, 247 



Strongylocentrotus lividus, 129 



Strongylocentrotus purpuratus, 52, 

 73 ff., 81 ff., 94, 98 ff., 103, 108, 

 109, III ff., 137, 191, 246 ff., 

 293 ff-, 364; larvae of, 49 ff. 



Sturtevant, A. H., 229 ff. 



Styela, 146 



Sulphur bacteria, 19 ff. 

 Supergenes, 5, 9, 136, 319 

 Sutton, W. S., 68, 233 ff. 

 Synthesis of living matter, by 



micro-organisms, 15 ff.; by 



enzymes, 24 ff. 

 Synthetic action of enzymes, 23 



TcBnia, 212 



Talbot, 262 



Tammann, 291 



Tanaka, 243 



Taylor, A. E., 27, 69 ff. 



Tchistowitch, 54 ff. 



Teleost fish, crosses of, 6 ff., 345 



Temperature, effect on heliotrop- 

 ism, 280; upper limit for organ- 

 isms, 287 ff.; effect on life, 288 

 ff . ; on butterflies, 303 ff . ; adapta- 

 tion to, 334 ff. 



Temperature coefficient, 290 ff., 

 305; for enzyme, 291; for de- 

 velopment, 292 ff.; for oxida- 

 tions, 295; and fluctuating var- 

 iation, 296 ff.; for [heart-beat, 

 300 ff . ; for duration of life, 366 



Thatcher, Miss, 181 



Thyroid inducing metamorphosis 

 in tadpoles, 155, 156 



Tichomiroff, 95 



Tissue culture of spermatozoa, 127 



Tissues, transplantation of, 30 ff., 

 44 ff.; cultivation of, 31 ff.; spe- 

 cificity of, 44 ff. 



Torrey, H. B., 264, 269 



Tower, 348 



Transfusion of blood, 53 



Transplantation, of tissues, 30 ff., 

 44 ff . ; of cancers, 45 ; of anlagen, 

 148; of eye of salamander, 157; 

 of testes, 226; of ovaries, 227 



Traube, 28 



Treub, 21 



Trial and error, 268, 270 



Trifolium arvense, 37 



Tropisms, 11 ff., 92 ff., 147, 178, 

 187, 253 ff.; and instincts, 253; 

 theory of, 257 ff. 



Tropisms, in embryonic develop- 

 ment, 147; of cave animals, 324 



