INDEX 



665 



Muller, Drosophila, multiple recessive female*, 



121 



fertility, 554 

 interference, 122 



linkage in 4th group of Drosophila, 117 

 Muller and Bridge*, crossing-over, time of, 121 

 Multi-factor hybrid*, 94 

 Multimodal curves, 48 



analysis of causes, 40 



conditions of, 48 

 in Ft, 170, 181 

 Multiple allelomorph hypothesis, 267 



allelomorphism, 155 



allelomorphs in Droeophila, 155 

 in fowls, 575 

 in mice, 155 

 in rabbits, mice, Aquilegia, Lychnis beans, 



160 

 in silkworm, 158, 210 



factors, 136 



theory of, in quantitative inheritance, 185, 



186 

 iVIumford, hinny, 517 



telegony, 570 

 Munson, bud selection, 208, 301 



grapes, 290 



hybridization, 294 

 Mutants dominant, 267, 274 



generally recessive, 267 



hermaphrodite, 215 



in hooded rats, 190 



occurrence of, 372 



propagation of 372 



reversible sex, 213 



eo-called in (Enothera, 248 



white-eyed, discovery of, 74 

 " Mutants," classification in (Enothera, 285 



results of crossing (Enothera, 247 

 " Mutating" species are hybrids, 285 

 Mutation and environment, 370 



bud, in cherry, 383 



in evolution, 282 



restriction of term, 286 



theory, 7, 8, 276 



vegetative w. somatic segregation, 272 

 Mutations, 15, 263 



affecting size, 177, 304 



and evolution, 276 



bud, 311, 315, 385 



classes, 263 



dominant, 267, 274 



factor. 110, 263, 264. 267, 268. 285, 304 



in barley, wheat, potato, tomato, 369 



in beans, 367 



in Boston fern, 315 



in breeding sugar beets, 340 



in cotton, hemp, rye, sunflower, 370 



in crop plants, 367 



in domestic animals, 462, 494 



in Drosophila comparatively rare, 267 



in homologous factors, 273 



in maize, 369 



in modifying factors, 190 



in oats, 367. 371 



Mutation* in one of a pair of factors, 273, 274 



in plant breeding, 366 



in sweet peaa, 304 



in tobacco, 367 



progressive and degressive, 315 



propagation of, 372 



return, 154, 213 



search for, 370 



vegetative, 270 

 "Mutations," de Vries" classification, 282 



in the Evening Primroses, 276 



recombinations, 282 



Mutilation, susceptibility of some flowers, 35O 

 Mutilations, inheritance of, 483 

 Myers, strain tests, 433 



N 



Nabours, mosaic hybrids, 152 

 Paratettiz, 158, 159 

 zebu, 531 



Nagcli, hybridization, 438, 439 

 Narrow breeding, 334 

 Nathusius, Bos species-hybrids, 520 



mutations in sheep, 462 

 Natural chimera, investigation, 378, 381 

 hybrids in autogamous species, 256 

 selection, 5, 276, 286, 439 

 Nature of disease-resistance, 401 



of variations, 16, 317 

 Naudin, species hybrids, 227 

 wheat-spelt hybrid, 438 



Neo-Lamarckians and acquired characters, 483 

 Nephrolepis exaltata Boetoniensis, 312, 314 

 Ameropohli, 314 

 Craigi, 314 

 Dwarf Boston, 313 

 elegantissima, 313 

 Goodi (graciliima), 314 

 Harris!, 315 

 magnified, 313, 314 

 Millsii, 313 

 muscosa, 313 

 Piersoni, 312 

 Randolph!, 315 

 Koosvelti, 313 

 Scotti, 313 

 superbissima, 313 

 Teddy Jr., 313 

 verona, 313 

 viridissima, 313 

 Whitmani, 314 

 Wm. K. Harris, 315 

 germinal mutations in, 316 

 Newman, creating populations, 352 



pure varieties, 341 

 "New creations," 441 

 New varieties, earliest systematic production, 287 



methods of creating, 302 

 Niata cattle, 276 



Nice, effects of alcohol on mice, 493 

 Nicotiana alata grandiflora, 319 



haploid chromosome number, 242 

 longiflora, 182 



