6i6 



EVOLUTION, GENETICS, AND EUGENICS 



Lang, A., 248 



Lange, J., 484-85 



Laplace, P. S., 49 



Laplacian hypothesis, 130 



Le Conte, J., 3, 547"55 



Leibnitz, 15 



Leighty, C. E., 559 



Lemuroidea, 102 



Lepas, metamorphosis of, 112 



Leptinotarsa decern! miata, 215-16 



Liliaceae, 332 



Lethal factors, 276, 296 



Lillie, F. R., 230-31 



Lincoln, A., 24 



Linkage: in Mendelian heredity, 285 ff.; 

 chromosome theory of, 285-88; in 

 many species, 296-97 



Linnaeus, 16, 43, 93 



Little, C. C.j 424 



Locy, W. A., 41-43 



Loeb, C, 453 



Loess Man, 148 



Lotsy, J. P., 43, 299 



Love, H. H., 561 



Lucas, A. H. S., 382 



Lucretius, 14 



Lull, R. S., 3, 5, 24, 25, 137, 139, 142, 



144-59 

 Lutz, 334 

 Lydekker, R., 119 

 Lyell, Sir C, 3, S, 23, 26, 49-50, 130 



Maas, O., 121 



McCracken, I., 248 



McFarland, J., 28 



McGregor, J. H., 153 



Madagascar, fauna of, 173-74 



Maeterlinck, 359 



Maize, linkage in, 297 



Mallophaga, 261-62, 434 



Malthus, 17, 23-24, 26 



Mammalian dispersal, 177-78 



Mammary glands, as adaptations, 355 



Man: of Chappelle-aux-Saints, 154; 

 Cro-Magnon Man, 156-57; chrono- 

 logical table of fossil man, 150; de- 

 scent from trees, significance of, 141; 

 evolution of, 144-59; evolutionary 

 changes of 147; fossil man, 147-57; 

 Heidelberg Man, 151-52, 154; im- 



pelling cause, of origin, 146; Nean- 

 derthal Man, 152-53; origin of, 145- 

 47; Piltdown Man, 155-56; stock of, 

 145; time of origin, 146-47 



Mantis reHgiosa, 395 



Marriage laws and eugenics, 525 



Marsh, O. C, 135 



Marshall, A. M., 378 



Marsupial pouch, as adaptation, 355- 



56 

 Maryatt, 338 



Mastodon, 139-43, 148 



Materialism, the relation of evolution 

 to, 548-57 



Matthew, W. T., 144 



Maturation: of egg-cell, 205-7; of 

 sperm-cell, 203-5 



Maupertuis, 15 



Median, in variation, 558 



Megalonyx jeffersoni, 1 70 



Meiosis, 1S6, 204-7 



Mendel, G., 40, 232-37; his conception 

 of purity of gametes, 238-39; his 

 conception of unit characters, 238; 

 his experiments, 231; his explana- 

 tions, 238-44; his law of dominance, 

 233-35, 238; his law of segregation, 

 40-42, 234-36; his life and character, 

 232; his results, 233-34 



Mendelian heredity, in cats, 251; in 

 guinea-pigs, 251; laws of, 273-76; 

 linkage in, 285 ff.; in maize, 246-47; 

 in man, 251-52, 448-50; in mice, 

 236-37, 250; in nettles, 247; in nu- 

 merous species, 245-46; in peas, 235- 

 36; in pigeons, 244; in rabbits, 251; 

 in silkworms, 247-48 



Mendelism: physical basis of, 561-72; 

 review of, 273-76 



Mesohippus, 135 



Metaphase of mitosis, 194-95 



Metcalf, M. M., 6, 32, 360, 364-65 



Meyer, L., 84 



Miastor americana, 201, 202, 204 



Millson, A., 378 



Milton, J., 14 



Mimicry, 135 



Miohippus, 135 



MirabiUs jalapa, 248, 255-56, 264-65; 

 M. rosea, 246 



Misconceptions about evolution, 8, 9 



Mitotic cell division, 186, 194, 195, 564- 

 65; spindle, 194 



