520 READINGS IN EVOLUTION, GENETICS, AND EUGENICS 



McFarland, J., 28 



McGregor, J. H., 90 



Madagascar, fauna of, no, iii 



Maeterlinck, 200 



Mallophaga, 271, 272 



Malthus, 17, 23, 24, 26, 223 



Mammalian dispersal, 114-15 



Mammary glands, as adaptations, 196 



Man: of Chappelle-aux-Saints, 91; 

 Cro-Magnon Man, 93, 94; chrono- 

 logical table of fossil man, 87 ; descent 

 from trees, significance of, 84; evolu- 

 tion of, 81-96; evolutionary changes 

 of, 84; fossil man, 84-94; Heidel- 

 berg Man, 88, 89, 91; impelling 

 cause of origin, 83; Neanderthal 

 Man, 89-92; origin of, 82-84; Pilt- 

 down Man, 92, 93; place of origin, 

 82, 83; of Spy, 91; stock of, 82; 

 time of origin, 83, 84 



Mantis religiosa, 257 



Marriage laws and eugenics, 477 



Marsh, O. C, 72 



Marshall, A. M., 214 



Marsupial pouch, as adaptation, 196, 

 197 



Mastodon, 76, 77, 78, 79, 85 



Materialism, the relation of evolution 

 to, 46-53 



Matthew, W. T., 81 



Matthiola, 394 



Maturation: of egg-cell, 299, 300, 301; 

 of sperm-cell, 298, 300 



Maupertius, 15 



Median, in variation, 367 



Meek, 364 



Mcgalonyx jeffersoni, 85 



Mendel, G., 40, 260, 346; his concep- 

 tion of purity of gametes, 386, 387; 

 his conception of unit characters, 386; 

 his experiments, 381; his explana- 

 tions, 386-92; his Law of Domi- 

 nance, 40-42, 381, 382, 386; his Law 

 of Segregation, 40-42, 382-385; 

 his life and character, 380; his results, 

 381, 382 



Mendelian heredity: in cats, 399; 

 crossing-over in, 441-48; in guinea- 

 pigs, 399, 432, 433; in Helix, 396; 

 in Lina lapponica, 396; linkage in, 

 441-48; in maize, 394, 394; in man, 

 399, 400; in mice, 384, 385, 398; 

 in nettles, 395; in numerous species, 

 393, 394; in peas, 384; in pigeons. 



397, 398; in poultry, 396, 397; in 



rabbits, 399; in silkworms, 395, 396 

 Mendelism: physical basis of, 401-12 

 Mesohippus, 72 



Metcalf, M. M., 6, 32, 200-204 

 Metz, C. E. v., 297, 363, 436 

 Meyer, L., 155 

 Miastor americana, 294, 295 

 Millson, A., 214 

 Milton, J., 14 

 Mimicry, 203 

 Miohippus, 72 

 Mirabilis jalapa, 394, 415, 416, 424; 



M. rosea, 394 

 Mivart, 135, 136 

 Mneme theory of Semon, 335 

 Mode, in variation, 367 

 Modifications, 308, 309 

 Moeritherium, 76, 77, 78 

 Monohybrid ratio, 389 

 Moore, C. R., 454 

 Morgan, L., 264 

 Morgan, T. H., 42, 43, 44, 260, 261, 267, 



318, 321, 355-60, 379, 433-38, 442, 



443 

 Morphology, evidences from, 129-63 



Moulton, F. R., 57 



Miiller, F., 170, 172, 239 



.MuUer, H. J., 408, 437 



Multiple factor h}T)othesis, 424-28 



Mutation theory^ 346-64; advantages 

 over Natural Selection, 359; alterna- 

 tive to Natural Selection, 272; 

 criticism of, 360; De Vries' own 

 account of, 348-55; historical 

 account of, 36-38; Morgan's sum- 

 mary of, 355-59 



Mysis larva of Peneus, 170 



Nabours, R. K., 448 



Niigeli, C. von, 34, 35, 333, 380 



Natural Selection, 4, 12, 24, 25, 26, 3s, 

 37, 38, 223-43; experimental sup- 

 port of, 256-58; present status of, 

 258; relation of Mendelism and 

 mutation to, 258-62 



Naudin, C, 41 



Nauplius larva of Peneus, 170 



Neanderthal Man, 88-92 



Nebular hypothesis, 57 



Neo-Lamarckism, 29, 335, 336 



