INDEX 



565 



Unger, 430 



Unna, 26, 57 



Urease, 28 



Urechis (echinoderm), 163 



Uredinese, 283 



Uroglena (yellow-green alga), 44 



Uroleptus (infusorian), 277 



Uromyces (fungus), 231 



Ustilago (fungus), 231, 386 



Vvularia (angiosperm), 186, 273, 320, 345 



Vacuole, 2, 93-96, 210 



contractile, 42, 228 



in cytokinesis, 165, 168, 171 



ergastic contents, 96-98, 101, 102 



membrane, 42 ff. 



origin of, 94 

 Vacuome, 94, 193 

 Valkanover, 334 



Valeriana (angiosperm), 342, 389, 390 

 Valleau, 391 



Vallisneria (angiosperm), 210, 236 

 Valonia (green alga), 97, 178 

 Van Camp, 58 

 Van Cleave, 9 

 Vandel, 413 



Vandendries, 283, 386, 388 

 Van der Stricht, 244 

 Van Durme, 88 

 Vanessa (butterfly), 50, 61 

 Van Regemorter, 185 

 Van't Hoff's law, 112 

 Van Teighem, 95 

 Variegation, 317, 415 

 Vaucheria (green alga), body structure, 8, 10, 23 



gametes, 196 



gametic meiosis, 279 



mitosis, 190 



parthenogenesis, 402 



sex, 386 



syngamy, 197, 227 



zoospore, 198 

 Vaupel, 378 

 Vavilov, 342 



Vegetative propagation, 354 

 Vejdovsky, 132, 133, 142, 266 

 Velten, 434 

 Verson's cells, 215 

 Verworn, 46 

 Vesperugo (bat), 222 

 Vessel, 12 

 Vicia (angiosperm), abnormal mitosis, 186, 187 



cell-plate, 171 



chondriosomes, 91 



chromosome complement, 115, 118, 124, 128, 

 129 



cytoplasmic heredity, 419 



heteroploidy, 343 



leucoplast, 62 



meiosis, 267 



nucleolus, 120, 121 



plastids, 69 



somatic mitosis, 133, 134 



Vinca (angiosperm), 210 



Vincetoxicum (angiosperm), 210 



Vines, 401 



Viola (angiosperm), 210, 236, 273, 342, 361, 415, 



416 

 Virchow, 431, 439 

 Viscosity, 31, 169, 186, 248, 249 

 Viscum (angiosperm), 17 

 Visscher, 245 

 Vital dyes, 6 

 Vitamin D, 27 



Vitelline membrane, 214, 240, 241 

 Voinov, 78, 86, 87, 215 

 Volkonsky, 62 

 Volutin, 27, 193 



Volvocales (green alg£e), 16, 68, 279 

 Vouk, 101 

 de Vries, (Enothera species, 336, 338 



recombination, 302 



rediscovery of Mendelism, 445 



theory of heredity, 441 



tonoplast, 42 



vacuoles, 79, 94 



W 



Tf -chromosome, 379, 380 

 Wager, 67, 66, 67, 199, 226 

 Wagner, 71, 85, 188 

 Wakayama, 57, 206, 282 

 Wakker, 66, 101 

 Waldeyer, 440 

 Walker, 57, 283 

 Wall thickening, 50 

 Wallin, 89, 90 

 Walter, H., 25 

 Walter, H. E., 286 

 Walton, 378 

 Waltzing mice, 317 

 Wdmoscher, 193 

 Wanderplasm, 197 

 Wanscher, 342 

 Warburg, 38, 89 

 Wassilief, 194 

 Watkins, 342, 366, 396 

 Wax, 102 

 Weatherby, 43 

 Webber, 199, 207, 234 

 Weber, 31, 32, 40, 61 

 Weier, (Enothera, 334, 337 



plastids, 68-71 



and Golgi material, 80, 81 



spermatogenesis, 201, 203 

 Weigl, 74, 220 

 Weinstein, 302, 306, 311 

 Weismann, 141, 441-445 

 Wells, 25, 26 

 Wels, 186 



Welsford, 210, 230, 236, 237, 281 

 Wendel, 50 



Weniger, 236, 237, 238 

 Wenrich, amitosis, 190 



chiasma, 268 



chromomeres, 136, 141 



flagella, 223, 224 



