INDEX 



613 



416-29; in maize, 353-54; in man, 

 358-59; in mice, 343-44, 357; in 

 nettles, 354; in numerous species, 352- 

 53; in peas, 342-43; in pigeons, 356- 

 57; in poultry, 355-56; in rabbits, 

 358; in silkworms, 354-55 



MendeKsm: physical basis of, 360-71; 

 review of, 392-94 



Mesohippus, 143 



Metcalf, M. M., 6, 32, 205, 209-10 



Metz, C. E. v., 311 



Meyer, L., 92 , 



Miastor americana, 308-9 



Millson, A., 223 



Milton, J., 14 



Mimicry, 205, 207-8, 210-11 



Miohippus, r43 



Mirabilis jalapa, 355, 374-75, 383-84; 



M. rosea, 353 

 Misconceptions about evolution, 8, 9 

 Mivart, 72-73 



Mneme theory of Semon, 461 

 Mode, in variation, 432 

 Modifications, 325-26 

 Moeritherium, 147-49 

 Monohybrid ratio, 348 

 Moore, C. R., 406 

 Morgan, L., 273 

 Morgan, T. H., 42-44, 291-92, 298, 356, 



359, 425, 431, 433-34, 438, 443, 448, 



466, 506-11, 526-28 

 Morphology, evidences from, 88-122 

 Moulton, F. R., 79 

 Miiller, F., 141, 143, 270 

 Muller, H. J., 389, 438, 443, 446, 5" 

 Multiple allelomorphs, 447-49 

 Multiple factor hypothesis, 405-9, 416 



Mutation theory, 469-70, 4Q7-528; ad- 

 vantages over natural selection, 510; 

 alternative to natural selection, 304; 

 criticism of, 511-12; De Vries' own ac- 

 count of, 499-506; historical account 

 of, 36-38; Morgan's summary of, 

 506-10 



Mysis larva of Peneus, 141 



Nabours, R. K., 427 



Nageli, C. von, 38-39, 339 



Natural selection, 4, 12, 24-26, 35, 37- 

 38, 232-71; experimental support of, 

 265-67; present status of, 267; rela- 



tion of Mendelism and mutation to, 



267-80 

 Naudin, C, 41, 222 

 Nauplius larva of Peneus, 119 

 Neanderthal Man, 169-73 

 Nebular hypothesis, 57 

 Neo-Lamarckism, 29, 244-45, 445-46 

 Neo-Mendehsm, 43-45, 445-46 

 Nest-making instincts, as adaptations, 



201 

 Nettleship, E., 359-519 

 Newman, Colonel, 220 

 Newton, Sir F., 7, 61, 286-89, 289, 292 

 New Zealand, fauna of, 181-82 

 Nictitating membranes of vertebrates, 



83-84 

 Nilsson-Ehle, H., 383-87, 499 

 Nitsche, Dr., 82 



Nucleolus: chromatin, 303; true, 303 

 Nutritive chains, 217 

 NuttaU, G. H. F., 108-9 

 Nutting, C. C, 267-71 



Obhterative coloration, 207-8 



Oceanic islands, fauna of, 172-81 



Octopus, eye of, 72 



Oenothera, 35; 0. albida, 506, 513; O. 

 biennis, 500, 514; 0. brevistylis, 500, 

 513; 0. cana, 513; 0. elliptica, 506; 0. 

 franciscana, 514; O. gigas, 357 ff., 

 515-16; O. hewdiii, 515; 0. lactuca, 

 513; 0. lacvifolia, 500; 0. lamarckiana, 

 37, 497-512, 514; 0. lata, 506, 514; 

 0. leptocarpa, 509; 0. liquida, 513; 

 0. muricata, 515; O. nannella, 500; 0. 

 oblonga, 513; 0. pubescens, 513; 0. 

 rubricalyx, 513; O. rubrinervis, 504; 

 0. scintillans, 506, 513-14; O. spatu- 

 lala, 509; 0. siibovala, 513 



Oglivie, Dr., 474 

 Oken, L., 12, 16 

 Oocyte, 336 

 Oogenesis, 335-36 

 Oogonium, 336 

 Organic selection, 299-300 



Origin of new hereditary characters, 

 467-70 



Origin of Species, The, 4, 5, 7, 24, 27, 



132-33, 138 

 Ornithorhynchus, 245 

 Orohippus, 143-44 



