544 



INDEX 



random, 60 



of spermatozoa, 53, 54 

 Mulattoes, skin color, 288-291 

 in Jamaica, 433 

 in U. S. 433 

 MliLLER, Johanxes, 494 

 Muslow, 138-141 

 Multiple factors, in oats and i 

 wheat, 287 

 skin color, 288-291 

 size, 291-293 

 Multiple sclerosis, 303 

 Muse a, symmetry of egg, 175 

 Muscular atrophy, 303 

 Mutation Theory, 313 

 Mutations, 215-217 



and Fluctuations, 217, 218, 



400, 402 

 progressive and regressive, 



404 

 origin of, 318-322, 356, 357, 

 400-404 

 Mutilations, not inherited, 347 

 Myopia, 206 



Nageli, idioplasm, 103 



non-inheritance of alpine 

 habit, 355 

 Natural selection, 385, 392, 415, 

 354 

 nullified, 421-424 

 Nature, definition of, 462 

 man part of, 463 

 mechanistic conception of, 



462 

 vs. nurture, 309 

 stability of 411 

 voluntaristic conception of, 

 460 

 Necturus, behavior of, 74 

 Neo-Darwinism, 49 

 Neo-Lamarckism, 49 

 Nereis, spermatozoon of, 16 

 maturation and fertiliza- 

 tion of, 16 



Nettleship, hereditary cata- 

 ract, 204, 205 

 Neural plate, groove, tube, 25, 



31 

 Neuritis optica, sex-linked, 304 

 Neuropathy, 303 

 New England families dying 



out, 450 

 Newcomb, practical eugenics, 



427 

 Newton, 490 



Night blindness, sex-linked, 304 

 Nilsson-Ehle, multiple factors, 



287, 288 

 Non-Mendelian Inheritance, 



294 

 Notochord, 25 

 Nuclear correlations, 169 

 Nuclear division, indirect, 16, 



24, 116, 118-122, 126-132 

 Nuclear inheritance theory, 166- 



174 

 Nucleus, 10, 115-120 



and cytoplasm concerned in 



heredity, 185 

 Xulliplex character, 255 



Obesity inherited, 209 

 Observations on inheritance, 



197 

 "Odd" chromosome, 147 

 Oenothera, mutants, 403, 405 



chromosomes of, 403 

 Oneness of life, 5, 51 

 Ontogenv and Phvlogenv, 7, 313 

 Oocytes,* 135 



'of rabbit, 136 

 Oogenesis of Anevraeanthus, 



140 

 Oogonia, 134 

 Oosperm, 13, 18 

 double cell, 18 

 individuality of, 18, 19, 22 

 infection of, 207 

 Organ-forming substances, 89 



