INDEX 



447 



Robertson, W. R. B., 160, 165, 237, 245, 

 249, 257, 351, 393, 394 



Rosa (rose), 348 



Rosacese, 315, 348 



Rosen, 65 



Rosenberg, 160, 161 

 apogamy, 315, 316 

 chromosomes in Crepis, 349 

 reduction, 236, 251, 252 



Rosenvinge, 46 



Rotifers, 318, 364, 368, 370 



Roux, 154, 156, 328, 384, 392 



Roux-Weismann theory, 225, 391 



Rubber, 135 



Ruckert, 159, 227, 244, 245, 279 



Rudolph, 123 



Rudolphi, 5 



Ruhland, 43 



Russow, 46 



Rusts, 60, 224, 292 



Ruzicka, 67 



Rytz, 187 



Sabaschnikoff, 248 

 Sachs, 12, 49, 62 

 Safir, 382 

 Sagitta, 256 

 Saguchi, 96, 212 



Sakamura, chromosomes and species, 

 348 



deranged mitosis, 212, 214, 259 



extruded chromatin, 136 



false tetrads, 248, 249, 259 



reduction, 236, 254 



somatic mitosis, 160, 162, 164, 165 

 Salamandra (salamander), achromatic 

 figure, 178, 184 



attraction sphere, 77 



chromosomes, 150 



reduction, 237 

 Salix (willow), 372 

 Salter, 107 

 Salts, 135 

 Sands, 81 

 Sap in cell, 135 

 Sapehin, 88, 114, 123 

 Saprolegnia (fungus), 187, 290 

 Sarcode, 11 

 Sargant, 211 

 Sax, 298-300 

 Schacht, 13 



Schacke, 365 

 Schaeffer, 42 

 Schaffner, 87, 239, 372 

 Schaudinn, 67, 207, 282, 317 

 Schaxel, 116 

 Scheben, 274 

 Schellenberg, 247 

 Scherrer, 105, 113, 118, 123 

 Schikorra, 291 

 Schiller, 213 

 Schilling, 112 



Schimper, 12, 107, 108, 113 

 Schleicher, 143 

 Schleiden, 7, 8, 13 

 Schleip, 237, 257 

 Schmitz, 14, 108 

 Schneider, A., 33, 143 

 Schneider, H., 236, 257 

 Schottlander, 82, 86, 90 

 Schreiner, 231, 235, 237, 257, 258 

 Schuberg, 96 

 Schultze, M., 11 

 Schultze, W. H., 70 

 Schulz, 349 

 Schurhoff, 66, 213 

 Schwann, 8, 9, 15 

 Schwarz, 64 

 Schweigger-Seidel, 14 

 Scolopendra (centipede), 255 

 Scolopendrium (fern), 315, 317 

 Scopolia (angiosperm), 61 

 Scorpion, 119 

 Scott, 202 



Sea urchin, artificial parthenogenesis, 

 284, 287 



blastomeres, 328 



hybrids, 325-327 



Second contraction, 232, 233, 238, 239 

 Secondary thickening of cell wall, 191 

 Secretions, 28, 30, 66 

 Secretory cells, 30 



Segmentation, of chromosomes in 

 fertilization, 296 



of egg, 188 



of spireme, 145, 239 

 Segregation, of chromosomes, 229, 340 



Mendelian, 338, 343, 408, 409 



somatic, 352, 395 

 Seifriz, 38, 39, 43 

 Seiler, 360, 361, 363 

 Selachians, 237 



Selaginella, plastids, 103, 104, 105, 114, 

 122 



