INDEX. 



acclimatization 263 



accommodation differences 202, 235, 236 



Achillea 372 



Aconitum 372 



acquired characters 222, 319 



Actcza 371 



adaptation 211, 276, 283 



defined 199, 278 

 adaptations, symbasie 220 

 adaptive fitness 222 



versatility 200 

 adjustment of locomotion 207 



characters 205 

 African diplopods 269, 312 

 agamic cell-structures 368 

 Agave, heterism of 247 

 agents of evolution 314 

 agricultural instincts 251 

 agriculture, primitive 251 

 albinism 337 



alternation of generations 240, 366 

 alternative adjustment characters 205 



heredity 345 

 anthropoids 217 

 antidromous plants 371 

 apaulogamic cell-structures 368 

 apogamic bulblets 383 

 Arctic plants, apogamous 384 



plover, migrations of 211 

 Aristotle's categories 282 

 arropic species 369 

 artism 235, 250 

 astronomy and biology 356 

 autogamy 377, 384 



barley, linic species 377 

 bees, sex-determination of 347 

 biology, compared to astronomy 356 



human 218 

 bionomy of species 364 

 bovine hybrids 389 

 branch dimorphism 242 

 bud mutations 351 



variations 354 

 Burbank on Prunus 352 



cacao, dimorphic branches of 242 

 Castillo., dimorphic branches of 242 

 categories of causation 282 

 Cattell, quoted 282 

 cell differentiation 239, 329 

 cellular organization 367 



structures, three types 238 

 Ceratodon 376 

 cerebral development 217 

 change of seed 262 



character-unit assumption 339, 342, 353 

 chromomeres 342 

 chromosome purity 337 

 chromosomes 336 



positional relations of 353 



temporary 338 



chromatin of hybrids 348 



chrysomelid beetles, dichromatism of 376 



civilizations suicidal 217 



clones, definition of 378 



clonic conditions 383 



hybrids 388 



propagation 380 



species 378 



varieties, limitations of 382 

 Cockayne, reference to 259 

 coffee, accommodations 210 



amelioration of 390 



dimorphic branches of 242 



mutations 253, 271, 275, 325, 386 

 colors of desert animals 213 

 combined forms of diversity 379 

 conjugate cell-structures 368 



heredity 344 



organisms 330, 349 



periods 365 

 conjugation, evolution of 330 



nature of 343 

 conscious selection 278 

 conspicuous colors in forests 214 

 constant of variation 315 

 constitution of species 356 

 continuity of evolution 309 

 corn, Indian 264 

 correlation of variations 221 

 cotton acclimatization 201, 263 



dimorphic branches 242 



variations 201 

 Coues, on uniformity 291 

 cross-fertilizing adaptations 220 

 crystallization compared to heredity 332 



Darwin, G. H., on natural selection 292 

 Darwin, Charles, on variation 229 



on substitution 281 

 Darwinia, N. formulae 284 

 Darwinism 223, 230, 320 

 degeneration 255, 273 

 Delphinium 371 



dendritic conception of descent 197 

 descent differences 235 

 desert colors 213 



plants 213 

 deterioration of varieties 382 



under inbreeding 381 

 determinant theories 300, 316 



defined 306 

 DeVries, elementary species 378 



on mutations 314, 324 



on selection 322 



on uniform species 362 



theory of 387 

 dichromatism 375 

 dimorphic branches 242 

 diplopods, African 269, 312 

 Discaria experiment 258 

 discontinuous motion 309 



variations 300 



400 



