- acclimatization 263
- accommodation differences 202, 235, 236
- Achillaea 372
- Aconitum 372
- acquired characters 222, 319
- Actaea 371
- adaptation 211, 276, 283
- adaptations, symbasic 220
- adaptive fitness 222
- 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
- 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
- bionomy of species 364
- bovine hybrids 389
- branch dimorphism 242
- bud mutations 351
- variations 354
- cacao, dimorphic branches of 242
- Castilla, 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
- chromatin of hybrids 348
- chrysomelid beetles, dichromatism of 376
- civilizations suicidal 217
- clones, definition of 378
- clonic conditions 383
varieties, limitations of 382
- Cockayne, reference to 259
- coffee, accommodations 210
dimorphic branches of 242
mutations 253, 271, 275, 325, 386
- colors of desert animals 213
- combined forms of diversity 379
- conjugate cell-structures 368
- conjugation, evolution of 330
- 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 20!, 263
- 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
- Darwinia, N. formulae 284
- Darwinism 223, 230, 320
- degeneration 255, 273
- Delphinium 371
- dendritic conception of descent i
- descent differences 235
- desert colors 213
- deterioration of varieties 382
- determinant theories 300, 316
- defined 306
- DeVries, elementary species 378
- dichromatism 375
- dimorphic branches 242
- diplopods, African 269, 312
- Discaria experiment 258
- discontinuous motion 309
- variations 300
- discriminate mutations 393
- disjunction 337
- diversity, conditions of 396
- domesticated species 359
- domestication of food plants 385
- dominant characters 337
- double-celled organisms 344
- Draba 378, 383
- dynamic causes 304
- educational danger 367
- elementary species 378
- elimination 281
- elk, antlers burdensome 217
- Engler, on mountain plants 267
- environment, definitions 223
- environmental fortuity 215
- ethics of race 335
- Eucalyptus, metamorphosis 241
- evening-primrose mutations 387
- evolution a process 289
by restricted descent 378
- evolutionary species 210
- exaggerated heterism 388
- explanations of evolution 288
- expression problem 294
- false hybrids 395
- fasciation 352
- Ficus 220
- fig insect 219
- fish with protective color 214
- fitness by correlation 221
- forces of evolution 328
- formulae of evolution 285
- fortuity 215
- frog with protective color 214
- galls, heredity of 352
- genetic variations 236
- germinal incompatibility 348
- Goniphodesmidae 312
- graft-hybridism 352
- growth defined 330
- Gulick isolation theory 314, 318, 377
- Guyer on hybrids 348
- Hawaiian snails 377
- Helix 377
- heredity, alternative or polar 345
in cell-specialization 329
- hermaphroditism 370
- heterism 244, 279, 327
- heterism defined 235
specialization of 247, 369
- heteroecism 241
- heterogamy 384
- Hieracium, linic species 378
- Houstonia 372
- human descent 355
- Huxley, quoted 286
- Hyatt's evolutionary forces 328
- hybrids, diversity of 388
- hybridization, limits of 394
- inbreeding, effects of 382
- inconspicuous colors 213
- infusoria, nuclei of 354
- integral theory 197
- intellect over-developed 217
- interbreeding as evolutionary factor 323
- intermittent evolution 309
- intraspecific differences 226, 235
- isolation defined 278
- Jordan, on selection 260
- Juniperus, metamorphosis 241
- karyapsis 397
- Kelvin, opinion of 343
- kinetic figure of evolution 323
theory defined 295, 302, 306
- Knowlton, on bird migration 211
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- Lamarckian adaptations 230
- Lamarckian theory 314, 333
- Lankester, on heredity 333
on useless differences 314
- laws and processes 289
- leopard, black 375
- Liberian fish 214
- limitations of clonic propagation 380
- line-bred organisms 377
- lines, definition of 377
- linic conditions 383
- living matter specific 358
- lizard with protective habits 214
- Lydekker, on sheep 260
- Lythrum, heterism of 346, 372
- maize varieties, 377, 384
- mathematical heredity 339
- Maupas, on nuclei of infusoria 354
- mechanical theories 319
- Mendelism and sex 348
- Mendelian heredity 336
- Merocheta 312
- metamorphosis 240
- metagenesis 240
- Metcalf, on plasticity 204, 206
- mice experiments 337
- millipeds 270, 312
- mitapsis 338, 397
- Mivart, on abrupt variations 231
- modes of evolutionary motion 286
- mongrel reversions 388
- monkeys 217
- mules sometimes fertile 385
- mutation theory 308, 313
- mutations 274
- mutative variation 392
- myxomycetes, accommodation in 208
- Naegeli's theory 256, 300, 316, 378
- natural selection 227, 232
- neism 236, 269
- neotopism 236, 261
- network motion 323
- new characters prepotent 319
- nuclear deterioration 354
- OEdogonium 239
- olfactory cones of millipeds 312
- organic elasticity 200
- overlapping of generations 367
- Oxalis 372
- Oxydesmidae 270
- paint-root 257
- pangenesis 316, 329
- panmixia 256
- paragamic cell-structures 368
- parasitic fungi 241
- parthenogenesis 398
- particularization 289
- pendulum analogy 390
- pheasants, plumage over-developed 217
- philosophical systems 296
- physiological species 210
- physiology of cells 356
- pigeon experiment 337
- plasmapsis 397
- plasticity in evolution 203
- Poa 376
- polar heredity 345, 348
- politism 242
- porric species 376
- porrism 236, 266
- Portulaca 376
- positional relations of chromosomes 353
- post-conjugate heredity 344.
- predetermination hypothess 327
- prefiguration hypothesis 327
- premature socialization 367
- prepoteacy 231, 271
- preservation of characters 319
- protective colors 213
- proterandry in coffee 275
- proterogyny in coffee 275
- Prowazek, on chromatin 354
- Prunus, graft-hybrid 352
- Ptolemaic astronomers 293
- pure science 360
- purity of germ-cells 336
- quail, subspecies of 267, 377
- race evolution 335
- rapidity of evolutionary motion 308
- recessive characters 337
- reproduction defined 330
- restricted descent 376, 385, 388
- reticular descent 197
- reversions 388, 391
- root-crops, tropical 381
- ropic species 370
- Russian thistle 261
- rust fungi 241
- rye, a coherent species 384
- saltatory evolution 299, 305, 309
- screech-owls, supersexes of 375
- secondary sexual characters 346
- sections of species 364
- seedless plants 273, 378
- species unknown 381
- segregation 278
- selection defined 278
- selective perfection of adaptations 212
restriction of descent 379
- self-fertilization 377
- semisexes, definition of 372
- semisexual species 372
- sex and Mendelism 348
-differentiation 350, 355
- sexual characters 373
- sexuality of conjugate organisms 349
- Shamel, on tobacco 385
- sheep in tropics 260
- social organization 217, 242
- socialization, premature 367
- speciation 205, 276, 279
- species and subspecies 268
constitution of 356, 369, 376
- specific organization 327
- spiny plants 258
- Spirogyra 331
- spring-blossoming plants 383
- Standfuss, experiments of 253
- static theories defined 233, 298, 305
- stenic species 377
- stens, definition of 377
- sterile hybrids 348, 397
- structure of species 357
- subsexes, definition of 371
- subsexual species 371
- subspecific diversity 379
- substitution 281
- supersexes, definition of 375
- supersexual species 375
- Swingle, on positional heredity 353
- symbasic adaptations 220
- symbasis, function of 323
- symbasis defined 277, 317
- synthetic theory 197
- tables comparing theories 307
- taxonomy inadequate 361
- temperature range of plants and animals 211
- teratic neisms 236
- teratism 236, 272
- termite organization 243
- termites, heredity of 345
- tobacco experiments 385
- tomato mutations 265
- topism 236, 257
- unconscious selection 278
- uniformity, conditions of 396
- uniformity by autogamy 385
- unisexual coffee mutations 275
- use and disuse phenomena 254
- utility, environmental and organic 215
- variation, discovery of 229
- variations under domestication 360
- vegetative propagation 366, 381
- Verbascum 249, 371
- versatility of organisms 200
- Viola 371, 383
- Virginia partridge 267
- vital tension 303, 355
- Wallace, on natural selection 292
- Washington palm 212
- wealth and deterioration 218
- Weismann on heredity 256, 300, 316
- wheat, linic species 377
- White on tomatoes 265
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