INDEX 



561 



Seifriz, protoplasm, 31, 32, 37, 39 



X-ray analysis, 178, 179 

 Seiler, 268, 3S0, 397, 411 



Sdaginella (pteridophyte) , 61, 69, 180, 181, 204 

 Selini, 119 



Semiheterotypic mitosis, 346 

 Semipermeability, 37, 40, 41 

 Semisterile plants, 329-334 

 Senecio (angiosperm), 341, 345, 415 

 Senescence, 246 



Senjaninova, 70, 71, 86, 90, 118, 342 

 Senjaninova-Korczagina, 128, 129 

 Senn, 61 



Sepia (mollusk), 222 

 Serebrovsky, 315, 320 

 Sertoli cells, 215 



Set of chromosomes, 121, 254, 325 

 Sethi, 233 

 Sex, chemical reactions, 226, 398 



chromosomes, 297, 375-400 



genes, 394 



and heteroploidy, 394 



historical, 436 



intergrades, 394 



in life cycles, 383 



-limited characters, 391 



linkage, 297, 391-393 



metabolic theory, 398 



modification, 396-399 



and parthenogenesis, 410 

 Shafler, 88 

 Sharp, L. W., blepharoplast, 208 



chromosomes, form and structure, 116, 124, 

 133, 136 



cytokinesis, 174 



life cycles, 383 



mitosis, 133, 134, 137, 140, 142 



reticulum, 55 



organism-environment, 47, 312 



sex, 388, 398 



spermatogenesis, 199, 201, 203, 204, 206 

 Sharp. R. G., 10, 223 

 Shaw, 178, 204, 233 

 Shchavinskaia, 367 

 Shearer, 18 

 Sheep, 376 

 Sheffield, 334 

 Sheppard, 58 

 Shibata, 238 



Shigenaga, 52, 57, 120, 140 

 Shimamura, 57, 206, 234 

 Shimotomai, 186, 340, 342, 386, 390, 395 

 Shinke, 52, 57, 120, 139, 140 

 Shiwago, 381 



Showalter, 203, 232, 233, 343, 383, 395 

 Shull, A. F., 410 

 Shull, G. H.. 390, 392, 415 

 Siebert, 188 

 Sierp, 196 

 Sieve tube, 12, 13 

 Silene (angiosperm), 357, 390 

 Silk, 179 



Simocephalus (crustacean), 411 

 Simplex, 354 

 Simplex group of chromosomes, 292 



Simultaneous division, 167 



Sinapis (angiosperm) , 50 



de Sin6ty, 376 



Sinigaglia, 73 



Sinnott, 23, 286, 358 



Sinoto, 164, 334, 357, 388, 390. 396 



Sirks, 286, 419 



Sisa, 121 



Sjovall, 220 



Skalinska, 367 



Skupienski, 190, 278 



SUme, 96, 100 



Small, 29 



de Smet, 124 



Smilacina (angiosperm), 212 



Smith, B. G., 136, 146, 243 



Smith, D., 88 



Smith, E. L., 100, 102 



Smith, F. E., 184 



Smith, F. H., 133, 139 



Smith, G. M., 68, 196, 226, 278 



Smith, I., 206 



Smith, S. G., 139, 341 



Sm61ska, 206, 235 



Soderberg, 167 



Sokolow, 87, 215, 223 



Sol, 34 



Solarium (angiosperm), 186, 273, 352, 356-358, 



367, 406 

 Solenobia (moth), 411 

 Solvation, 34 

 Somatic mitosis, 105-113, 106, 112, 133-139 



duration and periodicity. 111 



outline, 105-109 

 Somatic mutation, 310, 345 



Somatic pairing of chromosomes, 123, 126, 272 

 Sorghum (angiosperm), 341, 342, 415 

 SoTodiscus (myxomycete), 190 

 Sorokin, 116, 118 

 Space lattice, 178 

 Spallanzani, 438 

 SpaHina (angiosperm), 367 

 Spathipkyllum (angiosperm), 405 

 Special wall, 167, 168 

 Specificity of organisms, 30 

 Spek, 31, 169, 171 

 Speltoid wheats, 276 

 Spemann, 23, 412 

 Spencer, Herbert, 47 

 Spencer, Hope, 246 

 Spermatia, 197, 227, 231 

 Spermatid, 201, 216 

 Spermatocyte, 214, 215 

 Spermatogenesis, in animals, 81, 214-223 



in plants. 70, 196-211, 202, 206 

 Spermatogonia, 214 



Spermatozoids, 197, 199, 202, 227, 232, 239 

 Spermatozoon. 26. 215, 221, 222, 240, 241, 437 

 Spermiogenesis, 215-217 

 Sphacelaria (brown alga). 111, 159 

 Sphoerocarpos (liverwort), 233, 266, 283, 307, 382. 



384, 395 

 Sphaeroplea (green alga), 227, 279 

 Sphagnum (moss). 201, 283 

 Spier, 176 



