INDEX 



617 



Mivart, 64-65 



Mneme theory of Semon, 413 



Mode, in variation, 557 



Moeritherium, 139-41 



Monoecious, 200 



Monohybrid ratio, 241 



Moore, C. R., 229 



Morgan, T. H., 42-44, 240, 2^2. 277-81, 



2S2, 283, 285-87, 291, 311-12, 322- 



26, 341-43 

 Morphology, evidences from, 80-114 

 Moulton, F. R., 71 

 M uller, F., 133, 135 

 Midler, H. J., 45, 209, 290, 328, 333"40, 



34i, 487 

 Multiple allelomorphs, 294 95 

 Multiple factor hypothesis, 365-67, 276 



Mutation theory, 469-70, 313-43; 

 causes of, 340-41; I)e Vries' own ac- 

 count of, 315 ff.; historical account 

 of, 36-38; Morgan's summary of, 

 322-26; rate of, in man, 447 



Mutations, as change factors, 312 



Mysis larva of Peneus, 133 



Nabours, R. K., 296, 297 



Nageli, C. von, 38-39 



Natural selection, 4, 12, 24-26, 35, 37- 



38, 383-400; experimental support 



of, 394-96; present status of, 396; 



relation of Mendelism and mutation 



to, 396-400 



Naudin, C, 41 



Nauplius larva of Peneus, in 



Neanderthal Man, 161-65 



Nebular hypothesis, 49 



Neo-Lamarckism, 29, 413-14 



-\ eo-Mendelism, 43-45 



Nest-making instincts, as adaptations, 



35" 

 Nettleship, E., 252, 452 

 Newman, Colonel, 375 

 Newton, Sir F., 7, 53 

 Nevs Zealand, fauna of, 173-74 

 Nictitating membranes of vertebrates, 



75-76 

 Nilsson-Ehle, H., 264-0S, 337 

 Nitsche, Dr., 74 

 Nutritive chains, 372 

 Nuttall, G. H. F., 100-101 

 Nutting, C. C, 396-4.00 



Obliterative coloration, 361-62 



Oceanic islands, fauna of, 164-73 



Octopus, eye of, 64 



Oenothera, 35, 313-26 



Oglivie, Dr., 404 



Oken, L., 12, 16 



Oocyte, 207 



Oogenesis, 205-7 



Oogonium, 207 



Origin of new hereditary characters, 

 308-11 



Origin of Species, The, 4, 5, 7, 24, 27, 

 124-25, 130 



Orohippus, 137-38 



Orr, H. B., 461-62 



Orthogenesis, 33-36, 187, 345-47, 426- 

 28 



Osborn, H. F., 8, 10-11, 13, 20-21, 45, 

 1 5=>-5 1 , 153, I57-S8, 366-69, 426-27 

 Overspecializations, 31 

 Ovum, 105 

 Owen, R., 79, 97 



Pa gurus bernhardus, 68 

 Palaeomastodon, 139-41 



Palaeontology, evidences from, 52; opin- 

 ions as to the adequacy of, 125-26; 

 strength and weakness of, 124-25 



Palingenetic, 115 



Pan vet us, 151 



Pangenesis, 28, 30, 308-9 



Panmixia, 31 



Pannieulus carnosis, 77-78 



Paramecium, 217 



Parasitism, as adaptation, 356-57 



Parthenogenesis: a mode of reproduc- 

 tion, 200; diploid, 224-25; haploid, 

 225; as a method of asexual develop- 

 ment, 104; sex determination in con- 

 nection with, 224-25 



Pavlov, I. P., 424 



Pearson, K., 43, 474 



Pedigree: of brachydactylism, 451; of 

 cataract, 452; of Charles the Great of 

 Sweden, 468; of feeble-mindedness, 

 460; of Ferdinand and Isabella, 465; 

 of Hohenzollerns of Prussia, 467; 

 of night-blindness, 456; of Romanoffs 

 of Russia, 464 



Peneus potimirium, 111-12 



Persistence factors in evolution, 186; 

 introduction to the study of, 209-11 



