6o2 



INDEX 



bridisation of, 342 ; Mendelian 

 phenomena in, 363 



Microbic diseases, 283 ; selection, 

 528 



Miles, Manly, 218 



Militarism, 532 



Minot, 441 



Misunderstandings, current, as to 

 acquired characters, 1 81-91 



Mitchell, Chalmers, 426 



Modifications, 74, 109 ; what are, 

 175; and variations, 11, 17^; 

 acquired, resembling ancestral 

 characters, 127 ; secondary re- 

 sults of, 245 ; indirect import- 

 ance of, 243, 516 



Montgomery, T. H., 15 



Moral character, inheritance of, 247 



Morgan, Prof. Lloyd, on mechanism 

 of transmission, 200 ; on habit and 

 instinct, 221 ; on importance of 

 modifications, 243 



— T. H., 94, 97, 234, 420, 469, 494, 

 503 ; experiments on mice, 234-5 ; 

 on segregation of gametes, 348 



Mosaic evolutio theory, 420 



Moussu, 234 



Multicellular organisms, the heredi- 

 tary relation in the asexual mul- 

 tiplication of, 35 



Multiplication, table of modes of, 30 



Multiplicities, 289 



Mutation, the oldest known, 97 



" Mutation theory "of de Vries, 90 



Mutilations, 169 ; transmissibility 

 of, 221 



Nageli, no; Alpine plants, 184; 

 his " idioplasm," 421 ; on the 

 material basis of inheritance, 430 



Natural selection, interference with, 



527 

 " Nature," 246 

 Nature and nurture, 6 

 Nawaschin and Guignard, 160 

 Neo-Darwinian position, 240 



Neo-Lamarckian position, 240 

 Nervous diseases, 220, 263, 278 

 Nettleship, 273 

 Newcorab, Prof., 501 

 Non-Mosaic theories, 424 

 Nurture, importance of, 242, 245 

 Nussbaum, 413, 490 



Obersteiner, 232 



(Enothera (evening primrose), 91 



Ogilvie, Dr., on transmission of in- 

 fectious diseases, 185, 201 



Oogenesis, 48 



Organic change, different kinds of, 

 70 



— evolution, general theory of, 



397 

 Organism and environment, rela- 

 tion between, 174; conception of , 



Originative factors in evolution, 5 1 3 

 Osborn, H. F., 243 

 Ovum, the typical, 39 

 Owen, 411 



Packard, 189 



Pangen theory of de Vries, 199 



Pangenesis, Darwin's theory of, 199, 



406 

 Panmixia, 238, 467 

 Paramcscium, division in, 32 

 Parents, influence of, in determiaing 



sex, 492 

 Paris, siege of, 1 62 

 " Parsimony, law of," 241 

 Parthenogenesis, inheritance in re- 

 lation to, 57 ; reversion in, 140 

 Parthenogenetic development, ar- 

 tificial, 55 

 Particulate inheritance, 384 

 Pathology, optimism of, 251 

 Pearson, Prof. Karl, on reversion, 

 122; on stature, 128; telegony, 

 151, 155 ; statement of Galton's 

 law, 324 ; law of ancestral in- 

 heritance, 327 ; statistical re- 



