650 



SUBJECT-INDEX. 



tiatlon, II, 322; localization of ex- 

 cretion, II, 333; respiratory or- 

 gans of fishes, II, 335-8; heart 

 and vascular system, II, 341, 344; 

 osseous differentiation, II, 355; 

 also muscular, II, 363, 368-9; 

 " false joints," II, 371; insect nu- 

 trition and genesis, II, 499; econo- 

 mics of evolution, II, 501-5; au- 

 thor's enunciation of survival of 

 the fittest in 1852, II, 528-9; evils 

 of interference with, in man, II, 

 532-3; vegetal tissue formation, 

 II, 582, 594-6; origin of verte- 

 brate type, II, 599. 



Nature, more complex than sup- 

 posed, I, 252, 450. 



Navicula, symmetry, II, 134-5. 



" Nebular Hypothesis," I, 23. 



Negation, inconceivability of, the 

 ultimate test of truth, I, 675. 



Negroes, telegony in United States, 

 I, 644-5. 



Nemertidce: continuing vitality of 

 pilidium, I, 250; bilateral sym- 

 metry, II, 195. 



Neo-Darwinists, and Lamarck, I, 

 630; their position reviewed, I, 

 694-5. 



Nerves: electrical phenomena, I, 51; 

 generation of nerve-force, I, 52-6, 

 60; corpuscula tactus, I, 75; Hert- 

 wig's classification of tissues, I, 

 189: structural traits, I, 192, 193; 

 environment and structure, I, 

 196; differentiation, I, 203; II, 

 355-61; vasomotor system, I, 206; 

 vicarious function, I, 209; activity 

 and waste, I, 216; adaptability, I, 

 229, 232, 236; parallelism in cell- 

 processes, I, 260-2; heredity, I, 

 313; effects of severance, I, 349; 

 relative development in men and 

 women, I, 594; analysis of brain 

 substance, I, 596; individuation 

 and development of, I, 598, 599, 

 600; distribution of tactual per- 

 ceptiveness, I, 603-8, 633, 646, 

 665-6, 671, 672, 692; alleged cost- 

 liness of tissue, I, 662; instinct 

 degeneration in ants, ib. ; " sensa- 

 tion areas," I, 666; segmentation 

 in Annelids, II, 125; ectodermal 

 derivation, II, 303^; cooperating 



factors in evolution of, II, 307-8; 

 differentiation from muscle, II, 

 363. (See also Psychology.) 



Nervousness, hereditary transmis- 

 sion, I, 307. 



Neurine, I, 594, 597. 



Neuter-insects (see Insects). 



New Zealand: invasion of alien spe- 

 cies, I, 477; kinship of past and 

 present forms, I, 489. 



Nitrogen: properties, I, 3-5, 20, 24; 

 compounds and their properties, 



I, 6, 8, 9, 12-14, 25-6, 39, 41, 42-3, 



II, 250; organic importance, I, 

 42-3; evolution of heat and oxida- 

 tion, I, 47; violent organic effects 

 of compounds, I, 54-5; function in 

 metabolism, I, 63-4, 66, 68-76; 

 presence in protoplasm, I, 66; ac- 

 tion in digestion, I, 69; fat accu- 

 mulation and fertility, II, 483. 



Nitro-glycerine, violent effects of, 

 I, 55, 122. 



Notochord: segmentation, II, 125, 

 218-22; formation, II, 217-8, 600; 

 in Permian vertebrates, II, 225. 



Noumenon, life not manifested as, 

 I, 5S0. 



Nuclein, II, 21. 



Nucleus: central development, I, 

 163; in simple organisms, I, 183; 

 phenomena exhibited by, I, 255- 

 8; current hypotheses of function, 

 I, 258-9; properties and function 

 of chromatin, I, 259-65; fusion in 

 fertilization, I, 283-4; function in 

 unicellular reproduction, I, 595-6; 

 absence of, II, 20-1; diffused 

 form, II, 85; macro- and micro- 

 nucleus in conjugation, II, 452. 



Nutrition: organic molecular re-ar- 

 rangement, I, 36; nitrogenous and 

 non-nitrogenous, I, 47-8, 68, 71-4, 

 77, II, 362; food assimilation and 

 reasoning, I, 81; needful for vital 

 change, I, 94; relation to growth, 

 I, 140, 143, 144, 147-9, 150, 157, 

 161; expenditure of energy, I, 

 157, 391; fluid, I, 208; vegetal 

 fructification, I, 267; II, 266; 

 vegetal growth and genesis, I, 

 293, 294-7, 336; animal growth 

 and genesis, I, 289-93, 295-7, 336; 

 conditions qualifying antagonism 



