520 READINGS IN EVOLUTION, GENETICS, AND EUGENICS 



McFarland, J., 28 

 McGregor, J. H., 90 

 Madagascar, fauna of, no, in 

 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 



Megalonyx jefersoni, 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. 394J 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, 



3*8, 321, 3S5-6o, 379, 433-38, 442, 



443 



Morphology, evidences from, 129-63 

 Moulton, F. R., 57 

 Miiller, F., 170, 172, 239 

 Miiller, H. J., 408, 437 

 Multiple factor hypothesis, 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, 1 70 



Nabours, R. K., 448 



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



Natural Selection, 4, 12, 24, 25, 26, 35, 

 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 



