SUBJECT-INDEX. 



591 



Mtinafjoda : integration and homology, 

 2, 99-102 ; genesis, 2, 425. 



??iiLS, mammalian, 1, 385. 



Natural selection : striietuval modifica- 

 tion, 1, 3 68; homogenesis and hetei-o- 

 genesis, 1, 233-7 ; aided by function, 



1, 246-52 ; special creation, 1, 340-4 ; 

 mdirect equilibration, 1, 444-9, 466, 

 474 ; changes without, 1, 449-57 ; 

 economical tendency, 1, 450 ; general 

 doctrine of evolution, 1, 457-62, 474 ; 

 unceasing, 1, 468 ; ethnologic, 1, 4f'8 ; 

 vegetal nutrition, 2, 48 ; upright 

 vegetal groAvth, 2, 53 ; endogenous 

 growth, 2, 54 ; exogenoiis, 2, 61 ; 

 gemmation, 2, 90 ; navicnla symme- 

 try, 2, 120 ; foliar position, 2, 143 ; 

 foliar distribution, 2, 152 ; tloral fer- 

 tilization and symmetry, 2, 153-5, 

 571-4; helical phoenoganiic grov.th, 



2, 164; echinodermaia and bilateral 

 symmetry, 2, 179 ; vei'tebrate axis 

 segmentation, 2, 204 ; phcenogamic 

 tissue differentiation, 2, 230 ; physio- 

 logical differentiation, 2, 235, 239 ; 

 foliar wax deposit, 2, 244 ; foliar 

 surfaces, 2, 246 ; floral fertilization, 

 2, 252 ; sexual selection, 2, 253 ; inner 

 vegetal tissue differentiation, 2, 262 ; 

 wood formation, 2, 270-1, 273-4; 

 animal tissue differentiation, 2, 286- 

 90; diii'erentiation of respiratory sys- 

 tem, 2. 293-5 ; epidermic differentia- 

 tion, 2, 2ii5-9 ; sensory organ de\e- 

 lopment, 2, 307 ; skin and mucous 

 membrane difTerentiation, 2, 308 : 

 localization of excretion, 2, 320-1 ; 

 respiratory organs of fish, 2, 324-7 ; 

 heart and vascular system, 2, 332, 

 334 ; osseous diflerentiation, 2, 345 ; 

 also muscular, 2, 354, 359-61 ; insect 

 nutrition and genesis, 2, 467 ; genesis 

 and individuation, 2, 472 ; economics of 

 evolution, 2, 474-8 ; Darwin, 2, 500 ; 

 vegetal tissue formation, 2, 551 , 5G3-5 ; 

 origin of vertebrate type, 2, 568. 



liavicula, symmeti'y, 2, 120. 



NemertidcB .- integration, 2, 94 ; bilateral 

 symmetry, 3, 178. 



Kerves : electricity from, 1, 48 ; genera- 

 tion of nerve-force, 1, 49-53, 57 ; 

 differentiation, 1, 159; 2, 348-51, 

 352 ; Vi.sculo-motor system, 1, 1G2 ; 

 '''carious function, 1, 166 ; over-exer- 



tion and waste, 1, 171 ; adaptability, 

 1, 186, 189, 193 : hereditary epilepsy, 

 1, 251 ; muscular differentiation, 2, 

 354. {See also Psychology). 



Nervousness, and heredity, 1, 244, 251. 



New Zealand, Eiiropean plants in, i, 

 389, 401. 



Nitric acid, properties, 1, 6, 8, 9. 



Nitrogen : chemical and physical proper- 

 ties, 1, 3-5, 20, 22 ; binary compounds, 

 1, 6, 8, 9 ; instability of compounds, 



1, 8, 37, 39 ; 2, 232 ;" quaternary com- 

 pounds, 1, 12-J4, 23 ; organic impor- 

 tance, i, 39-41 ; evolution of heat and 

 oxidation, 1, 44 ; tissue differentiation, 



2, 362-4 ; nutrition and genesis, 2, 461. 

 North American Eevieio: "Philosophical 



Biology," i, 479-84; "Physiological 



units," 1, 484-94. 

 Nofocliord : forn^.ation, 2, 199-201, 569 ; 



segmentation, 2, 202-5. 

 Nutrition: organic re-arrangement, t, 



34 ; nitrogenous and non-nitrogenous, 



1, 44, 45 ; 2, 353; food assimilation 

 and reasoning, 1, 62-8 ; needful for 

 vital change, i, 75 ; relation to growtli, 

 i, 112, 114, 1]6, 119-21, 122, 127, 131 ; 

 expenditure of force, 1, i54, 306 ; 

 fluid, 1, 165 ; vegetal growth, 1, 

 224-S, 232, 235-7 ; animal growth, 1, 

 228-33, 235-7; Dr. E. Darwin on 

 procuring, 1, 407 ; leaf development, 



2, 30, 71-4; vegetal development, 2, 

 48, 162, 259 ; axillary buds, 2, 61-5 ; 

 defective, 2, 70; vegetal inflorescence, 

 2, 163; Lelical phcenogamic growtli, 

 2, 164; vegetal fructification, 2, 250; 

 action of bile, 2, 317 ; osseous develop- 

 ment, 2, 340, 344; genesis, 2, 399, 

 402, 407,415-7,432; of young, a paren- 

 tal loss, 2, 401, 408, 409 ; distribution . 

 2, 413 ; reproductive system, 2, 439 ; 

 animal development and genesis, 2, 

 414 ; expenditui'e and genesis, 2, 447 ; 

 vegetal genesis, 2, 454, 484; agamo- 

 genesis,^, 455; genesis and effect of 

 conditions, 2, 455-9 ; obesity and 

 genesis, 2, 459-62, 481 ; general 

 doctrine of genesis, 2, 463 ; genesis 

 and vegetal parasitism, 2, 463 ; also 

 animal, 2, 461-6; insect genesis, 2, 

 466-S ; genesis, resume, 2, 470-2 ; 

 and evolution, 2, 474-8 ; of blackbird 

 and linnet, ^, 476 ; genesis in human 

 race, 2, 481-3, 487-9 ; Doubleclav on, 

 2, 483-5 : future human e\oiutioJ!, 



