654 



SUBJECT-INDEX. 



62-7; tissue differentiation in sec 

 ondary aggregates, II, 246, 385; 

 in phsenogams, II, 247-9, 386; in 

 bark and cambium, II, 249-50, 

 386; in free and fixed surfaces, II, 

 251-6, 270, 386; outer stem and 

 leaf tissue, II, 256-9, 270, 386; su 

 perficial differentiation in leaves, 

 II, 260-1, 270, 387; floral tissue 

 differentiation, II, 265-9; outer tis 

 sue, resume, II, 270: inner tissue 

 differentiation, II, 273-5, 388; 

 supporting tissue, II, 275-9, 285-8, 

 388; vascular system develop 

 ment, II, 273-5, 279-84, 285-8, 

 388: inner tissue, summary, II, 

 288-91, 388; integration, II, 292-8; 

 differentiation and instability of 

 homogeneous, II, 384-9, 392; mul 

 tiplication of effects, II, 390-1, 

 392; equilibration, II, 391-4; cir 

 culation and wood formation, II, 

 564-97; dye permeability, II, 569- 

 74, 577-81, 584, 586. (See also 

 Function.) 



Pickering, J. W., on artificial pro- 

 teids, I, 39. 



Pig: colour of muscles, I, 365-6; 

 telegony, I, 627; fertility of do 

 mestic and wild sow, II, 479-80. 



Pigeons: food of starving, I, 215; 

 heredity and variation, I, 305, 

 321, 615; atavism, I, 314; fertility, 

 II, 471-2, 478. 



Pike, unceasing growth, I, 154, 292. 



Pique-gouffe, commensal relations 

 with buffalo, II, 403. 



Plagiochila, evolution of stem, II, 

 62. 



Planaria: integration, II, 101-2; 

 Morgan on regeneration, II, 102, 

 611; segmentation, II, 107; sym 

 metry, II, 195: unintegrated func 

 tion, II, 373. 



Plants: influence of heat, I, 29; 

 effect of solar rays, I, 31-6, 500, 

 557; chemical composition, I, 40- 

 1; heat generation, I, 47; phos 

 phorescence, I, 49; electricity, I. 

 51; sensible motion, I, 56-7, 58; 

 metabolism, I, 62-7, 70; vital 

 changes, I, 86, 87, 91, 94; simula 

 tion by crystals, I, 96; vital ad 

 justments, I, 102; length and com 



plexity of life, I, 103-4; biological 

 classification, I, 125; growth, I, 

 136, 138, 140, 143, 145-9, 153, 160- 

 1, II, 401-2; development, I, 163- 

 5, 167-70, 272; weight, tempera 

 ture, and self-mobility, I, 174; 

 function, I, 174-8; structure, I, 

 194-6, II, 21; animal structure 

 contrasted, I, 196; function and 

 structure, I, 200; vicarious func 

 tion, I, 208-9; waste and re 

 pair, I, 213, 220; physiological 

 units, I, 225-6, 317, 360; adap 

 tation, I, 227; what is an in 

 dividual? I, 244-6, 250-1; gene 

 sis, I, 270, 271, 272-3, 274, 276-8, 

 279-85; relation of nutrition to 

 growth and genesis, I, 284-9, 294, 

 295-300, 642, II, 39; ovule horno- 

 logues, I, 288; natural selection, 

 I, 294-8, 532, 533, II, 51; heredity, 



I, 301-4, 308, 358-60; variation, I, 

 320, 323^, 325-6; fertilization, I, 

 340-5: classification, I, 377-80, 

 389-90; distribution, I, 396-400, 

 401-3, 404-12, 478-9, 556; special 

 creation and parasitism, I, 428; 

 evolution hypothesis, I, 434, 443, 

 449-50; rudimentary organs, I, 

 474, 475, 556; varied media, I, 484, 



II, 32; alien and native species in 

 New Zealand, I, 477; E. Darwin 

 and Lamarck on evolution of, I, 

 490-8; geologic changes affecting, 

 I, 501-3, 557; interdependence of 

 animals and, I, 504-6, 514, II, 

 398; complexity of influences af 

 fecting, I, 506; direct equilibra 

 tion, I, 523-5; indirect, I, 532, 

 533; seed distribution, I, 546; 

 wood development, II, 285-7, 289, 

 567-97; interdependence, II, 402- 

 3, 404; insect relations, II, 406-7; 

 adaptation and multiplication, II, 

 411-6; rhythm in numbers, II, 

 419; growth and asexual genesis, 

 11,439-42; growth and sexual gene 

 sis, 11,448-51; expenditure, II, 467; 

 horticulture, nutrition, and gene 

 sis, II, 477; tree development, II, 

 553; circulation and wood forma 

 tion, II, 567-92; dye permeability 

 and circulation, II, 569-74, 577-81, 

 584, 586; resume on circulation 



