< 223 >

INDEX

Aberrations, chromosomal, 47-52, 59, 68, 86, 187
Abram, 210
Acceleration, 28
Acidity of sap, 96
Acquired characters, inheritance of, 54 ; v. Lamarck
Adaptation, 113, 133, 142
Aeneas, 113
Aesthetics, 161
Albino, 64, 65, 74, 85
Alder, 93
Allantoin, 8
Allopolyploids, 64, 67-69, 78, 105, 190, 194
Allotetraploid, 139
Alternative inheritance, 98 ; v. Mendelism, gene
Altruism, 131, 208-210
Amblystoma tigrinum, 10, 125
America, 105, 106, 119, 128
Ammonites, 11, 23-28, 125, 151, 167
Amphibians, 29
Amphidasys betularia, 98
Angel, 110, 153
Angora, 65
Annelids, 8,146
Annual organisms, 97, 172
Ant, 86
Antennae, 43
Anthocyanin, 69
Anti-enzyme, 70
Antirrhinum glutinosum, 107 majus, 107, 151
Ape, 5, 99 149, 151
Apogamy. 87, 132-134, 179, 199
Apple, 34, 35
Aquatic animals, 133 ; v. Lake, Sea
Arabs, 85
Archangelsk, 89
Arctic fox, 204
Armaments, 120, 126
Arthropods, 145, 146
Artists, 129, 168
Assortative mating, 185
Atom, 157, 158
Atomism, 60, 103
Autopolyploids, 52, 78, 79, 185
Autosomal gene, 85, 99, 180-182, 184
Autotetraploids, 53

Bacteria, 63, 92, 93, 97
Baculites, 26
Balance, genic, 51, 116
Banding of shells, 83, 206
Barley, 78
Bat, 10, 94, 148
Bateson, 15, 57, 135
Bean, 16, 91, 115, 176, 177
Beauty, 33, 167-169

< 224 >

Bee, 126, 130, 137, 162, 208
Beet, 135
Behaviour, 208 ; v. Instinct
Bergson, 166
Bestiary, 126
Bible, 154
Bifurcation of man, 166
Big tree, 177
Biochemistry, 28, 96, 104, 115, 161, 162 comparative, 8-9, 63, 146
Biophysics, 60
Birch, 93, 94
Birds, 29, 75, 83, 86, 120, 128, 152, 153
Birth-rate, 172
Black, v. Melanism
Blake, 159
Blending inheritance, 14, 15, 194-198
Blood, 9, 37, 57, 84, 115, 161
Bolting, 135
Bone, 45, 146
Brachiopods, 145, 151
Bracken, 132
Bracts, 114
Brain, 148, 149, 151, 155, 159, 169
Breakwater, 89
Bristles, 18, 43, 144
Broodiness, 207
Brow ridges, 149, 150
Buckler fern, 132
Bud sports, 35
Bug, 10
Bull, 140
Butler, 164
Buxton, 10

Caenogenesis, 27
Calf, 149
Cambrian, 144, 145
Camelina glabrata, 87, linicola, 87
Camera, 166
Carboniferous, 24, 147, 152
Carcinus maenas, 89
Carnera, 110
Cat, 11, 61, 63, 64, 66, 76
Catalase, 92
Catastrophes, 118, 189, 204
Catholic apologists, 55
Cattle, 10, 140, 149
Cave, 18, 117, 211
Cavia aperea, 70, porcellus, 70, 71, 108, rufescens, 70, 71, 108
Cavy, v. Guinea-pig
Caytoniales, 147
Cepea hortensis, 83, 174, 206, nemoralis, 83
Cereals, 65, 87
Certation, 122
Cervavus, 140
Cervus, 140
Ceylon, 29
Chalk, 21 ; v. Cretaceous
Chance, 111 ; v. Random
Chemical action of genes, 96
Cherry, 52, 78
Chick, 149
Child, 5, 150, 176
Childbirth, 154
Childhood, second ; v. Senescence
Chimpanzee, 9
China, 150
Chloroplast, 38, 73
Choice, 160
Chromosome, 39, 41-44, 47-60, 67, 68, 73-82, 103, 105, 187, 194, 202, 214
Chrysanthemum, 77

< 225 >

Circulation, 125
Civilisation, 141
Clandestine evolution, 149
Classes, rate of increase of, 124
Climate, 133
Clone, 34, 35, 197
Club-moss, 147
Coal, 128
Cockle, 21
Coefficient of selection, 97, 109, 172, 176, 196, 213
Coelenterates, 145
Coiling, 22, 23, 26
Cold, 97, 113
Coleus barbatus, 30, elongatus, 30
Comb, 56
Combination of caracters, 94, 96, 100-104, 107, 133
Competition, 97, 119-130, 141, 176-179
Consciousness, 5 ; v. Mind
Continuous variation, 44-46, 103, 104, 137, 194
Convergence, 140, 166 ; v. Parallelism
Co-ordinates, 163
Cornea, 102, 174
Correlation, 114, 141, 171, 194, 212, 214
Cousin marriage, 85, 185
Cow, 10, 140
Cowslip, 69
Cox's Orange Pippin, 34, 35
Crab, 89
Creation, 21, 158-160
Crepis, 133
Cretaceous, 10, 148
Crimea, 89
Crop yield, 91
Crossing over, 44, 68, 77 ; v. Linkage
Crustaceans, 159
Cryptostylis leptochila, 127
Cubism, 168
Cultivated, v. Domesticated
Cycads, 147
Cyclamen persicum, 53
Cycles, 189, 204
Cyclostomes, 7
Cytoplasm, 73, 98 ; v. Plasmon

Dahlia, 78
Daisy, 151
Dancing, 162
Dandelion, 89-91, 199
Daniel, 2
Darkness, 20, 135, 136
Darwin, Darwinism, 1, 12-15, 18, 22, 25, 26, 29, 32, 34, 55, 60, 61, 63, 87, 90, 91, 94, 103, 106, 111, 114, 119, 120, 127, 131, 138, 140, 143, 164, 166, 196
Datura Stramonium, 51, 52, 80
Death, 141
Death-rate, 107, 172 ; v. Life, expectation of
Decaploid, 105
Deer-mouse (Peromyscus), 66
Deficiency, 187
Degeneracy, 7, 139, 152-154, 162, 167
Desert, 145, 211
Design, 159
Deviation, standard, 176-179, 195
Devil, 14, 160
Devonian, 10, 24, 146, 147
Discroceras, 140
Diet, 59, 154

< 226 >

Difference equations, 174, 181, 186-189, 192, 196, 197, 203, 208, 211
Differential equations, 181, 190, 192, 206
Dimensions, many, geometry of, 175, 176, 190
Diploids, 53, 55, 80
Disasters, 117, 204
Discontinuity, 23, 32, 57, 69, 78, 103, 137
Disease, 92, 119, 141, 142, 204
Distribution, geographical, 9
Disuse, 13, 20, 54, 92, 116, 118, 128, 130
Dodo, 152
Dog, 4, 5, 66, 149, 156
Domesticated organisms, 14, 53, 65, 71, 78, 95, 140
Dominance, Dominant, 40, 46, 56, 98-103, 109, 122, 134, 142, 180-196, 198, 206-209, 211-213, incomplete, 186, 193, 198
Dominant species, 105, 119, 128-134, 142, 147, 148, 204, 213
Donkey, 67
Double dominant, 99, 102, flower, 42, recessive, 102.
Drone bee, 131, 137
Drosophila melanogaster, 18-20, 42-44, 47, 56-59, 73, 100-102, 114, 117, 139, 174, obscura, 74, 76, simulans, 43, 74
Dualism, 155, 156
Duke cherries, 52

Earth, area of, 95
Echinoderms, 145
Ecology, 118, 133, 204, 214
Egg, 34, 38, 40, 207
Egoism, 210 ; v. Altruism
Élan vital, 166
Electron, 58, 157
Elephant, 148, 201
Embryo, Embryology, 7, 8, 25-28, 113, 124, 125, 146, 149, 150, 182
Emergence, 156, 157, 168, 169
Endogamy, 209, 210 ; v. Inbreeding
Endosperm, 122, 123
England, 98, 119, 128, 132, 171
Enneaploid, 105
Environment, 10, 12-20, 35, 37, 89, 102, 111, 119, 126, 133, 158, 175, 178, 194, 206, internal, 37
Eocene, 104, 148
Epidemic, 119, 204
Epimys rattus, 71
Epiphenomenon, 161
Equilibrium, 83, 85, 102, 133, 180, 183, 186-188, 191, 194-198, 204, 211-213, 215
Erysipelas, 92
Ethics, 159
Eugenics, 130, 196, 209
Evil, 154, 160
Excretion, 113, 125
Extinction, 23, 28, l00, 120, 138, 141, 142, 151, 152, 159, 169, 193, 199-207
Extra-nuclear factor, v. Plasmon
Eye, 20, 64, 103, 114, 152, 159, 165, 166, 167, 174, colour, 10, 43, 56, 64, 66, 74, 100, 117, 141

< 227 >

Factor, v. Gene, Plasmon
Fall of man, 154
Family, selection within, 182-184
Fat, 44
Fermentation, 63
Fern, 132, 147
Ferret, 66, 71
Fertilisation, 120-124, 126-127, 185
Fertility, 91, 100, 101, 172-174, 179, 194, 196 ; v. Sterility
Finite difference equations, 174, 181 seq., populations, 201-210
Fitness, 90, 91, 111-143, 172, 175, 179, 190, 195
Flaked flowers, 59
Flax, 38, 87
Flea, 200
Flower colour, 40-41, 45, 57, 63, 69, 96, 114, 115, 162, 190
Fluctuation, 35, 189, 209
Foetalisation, 28, 148-150
Folding, 145, 146
Food, 59, 148, 154
Foraminifera, 27
Forgetting, racial, 28
Fossil, 6, 7, 214 ; v. Palaeontology
Fowl, v. Poultry
Fox, 204
Frog, 9
Frost, 97
Fugue, 168
Funaria, 72
Future of man, 164-166

Galton, 46
Gamete, 34, 41, 50, 67, 75, 77, 81, 86, 124, 182-184 ; v Pollen, Spermatozoa
Gastropods, 29
Gauss, 194
Gene, 30, 38-51, 56-59, 64-66, 69-75, 81-85, 91, 95-104, 106-109, 114-123, 127, 129, 133, 134, 141, 179-214
Generations, overlap of, 97, 172-174
Genesis, 154
Genetics, 60, 61, 64
Genotypes, 83, 190, 195, 208, 210
Geology, v. Palaeontology
Geometrical progression, 180-182, 185, 206, 213
Geometry, 163
Geranium, 72
Germ-plasm, 36, 54
Germans, 84, 85
Germany, 85, 98, 119
Gills, 8, 25, 89
Glossy bacteria, 92
Glucose, 146
Goat, 140
God, 13, 131, 150, 159, 160
Gonad, 36, 45
Good, 154, 207-210
Gorilla, 9, 149
Gout, 8
Grafting, 52 ; v. Vegetative propagation
Gramineae, 105
Graptolites, 27, 151
Grass, 79,86, 91
Gravitation, 215
Great-grandparents, 171
Greeks, 85
Gregory, 57
Growth-rates, 124, 179
Gryphaea, 21, 23, 141
Guinea-pig, 8, 35, 36, 66, 70,71, 74,75, 108
Gypsies, 84, 85

< 228 >

Haememocyanin, 161
Haemoglobin, 161
Haemophilia, 57, 188
Hair, 8, 25, 28, 43, 44, 63-65, 69, 70, 108, 115, 141, 149
Hamburgh fowls, 45
Hamites, 26
Haploid, 71, 80, 81, 123, 183
Hatching, 94
Heart, 147
Heat, 58, 117
Heidelberg, 85
Height, 15, 45, 46, 110, 171, 194, 195, 197
Helix, v. Cepea
Heredity, v. Inheritance, Gene, Plasmon
Hermaphrodites, 173
Hernia, 154
Herodotus, 140
Heroism, 129
Herring, 132
Heterogametic sex, 51, 75, 183, 184, 188
Heterostylism, 173
Heterozygote, 40, 42, 76, 77, 85, 122, 186, 193, 197, 198, 212
Hieracium, 133
History, 2, 112
Holism, 157
Holland, 106
Homogametic sex, 51, 75, 180, 183, 184
Homology, 64
Homostyle, 114
Homozygote, 40, 77, 122, 186, 198, 210
Horn, 23, 120, 140, 141
Horse, 6, 67, 140, 148
Horse-tail, 146
Huxley, 14, 55
Hyatt, 26
Hybrid, interspecific, 2, 13, 31, 66-82, 105-107, 134, 138
Hydrogen, 157 peroxide, 92
Hymenoptera, 183
Hyper-sphere, 176
Hyper-surface, 175

Ice age, 118, 145, 204
Idealism, 155, 161-163
Imbibition, 113
Immunity, 116, 128, 141, 142
Inbreeding, 104, 136, 138, 179, 185, 196, 206, 207
Incest, 15
Indians, 84, 85
Infantile mortality, 172, 176
Inheritance, 11, 20, 35, 92, 103, 104, 171, 194 ; v. Gene, Plasmon of an acquired character, 54 ; v. Lamarck
Insect, 36, 115, 126, 152, 166, social, 130, 131, 183, 207, 208
Instinct, 130, 136, 161, 207
Integral equations, 97, 174
Integrals, definite, 173
Intelligence, v. Mind 
Intensity of selection, 97, 176-178, 180
Inversion, 47
Inviable type, 50 ; v. Lethal, Sterility
Irreversible evolution, 198
Isaiah, 160
Islands, 8
Isolation, 102, 210-212

Japanese mice, 116
Java, 150

< 229 >

Jaw, 146
Jews, 84
Jimson weed, 51
Jordanon, 133

Kant, 16
Kemp, 172
Kiwi, 152
Koenigs, 199
Kropotkin, 106, 126

Lake, 22
Lamarck, Lamarckism, vi, 1, 12, 13, 20, 28, 36, 37, 92, 130, 135, 136
Lamp-shell, 151
Larva, 94, 125
Last men, 165
Lathyrus, 139, 190
Lead, 59
Leaf colour, 38, shape, 39-41, 113, 114, 194
Leg 43, 146, 159
Lenin, 155
Leningrad, 89
Lens, 102, 166, 167 
Lepidoptera, 75
Lethal gene, 56, 122, 174, 186, 187
Lias, 24
Life, 61, 146, 156, 157, expectation of, 100, 101, 120
Light, 20, 135, 136
Limpet, 151, 167
Line, pure, 17, 35, 36, 57, 58, 89, 176
Lingula, 151
Link, missing, 151
Linkage, 42-44, 50, 122, 214
Linum, 73
Lissopimpla semipunctata, 128
Livy, 113

Magyars, 84
Maize, 78, 122
Malthusian parameter, 172
Mammals, 23, 27, 29, 51, 76, 103-105, 147-149
Man, 5, 8, 9, 15, 25, 27, 28, 36, 93, 97, 118, 123, 124, 126, 128-131, 141, 142, 148-151, 153, 154, 159, 164-169, 194, 200, 209, 210
Manganese, 59
Manichaeanism, 160
Mantis religiosa, 86
Map of chromosome, 42-44, 47, 73, 74
Mare, 140
Marx, 2
Material basis of variation, 138
Materialism, 2, 155, 161-163
Maternal instinct, 207
Mathematical theory of evolution, v, vi, 33, 96-100, 102, 109, 118, 130, 138, 172-215
Mating, systems of, 14, 15, 35, 179, 185, 187
Matter, 155, 156
Matthiola incana, 42, 115
Maze, 136
Measles, 141
Measure of selection, 97, 172-174
Mechanism, 60
Meiosis, v. Reduction
Melanism, 59, 94, 106-108
Memory, racial, 28
Mendel, 8, 15
Mendelism, 39, 46, 60, 71, 83, 96, 104, 116, 171 ; v. Gene

< 230 >

Meristic characters, 103
Mesozoic, 147
Metrical characters, 194-198
Migration, 22, 117-119, 129, 211-213
Milk, 10, 140
Mimicry, 87
Mind, 5, 28, 137, 155-158, 161-164, 167-169
Miocene, 84
Mirror, 167
Mobility, 112, 134, 160
Molluscs, 8, 21-27, 29, 145, 146, 166
Momentum, evolutionary, 142 ; v. Orthogenesis
Monism, 155, 156
Monkey, 125, 153, 154, 165
Monstrosities, 15
Morality, 110, 130, 131, 159
Mortality, 100, 101, 107, 120, 174, 176, 194
Moss, 72, 123
Mother, age of, 35
Moths, 69, 75, 93, 97, 98, 104
Mountain, 29
Mouse, 66, 71, 74, 107, 116,124, 148, 174
Mud, 89
Mule, 4, 64, 67
Multimutating genes, 59
Multiple allelomorphs, 41, 65, 91, 83, 84, 107-109, 214, genes, 190
Mus musculus, 116, norvegicus, 65, rattus, 71, Wagneri, 115
Mutation, mutant, 43, 56-60, 70, 72, 77, 83, 85, 92, 93, 101, 103, 104, 107-110, 134, 135, 138-140, 154,186-188, 193-194, 196, 200, 201, 204-207, 212-215
Mutation pressure, 135, 193, 194
Mutual aid, 126

Nation, 112, 126, 128, 169
Natural selection, v. Selection
Nature, 34, 36
Neanderthal man, 150
Nectary, 127
Negroes, 141
Neo-Lamarckian, v. Lamarck
Neolithic, 84
Neoteny, 27, 125
Nephrodium spinulosum, 132
Neutral genes, 193, 206, 207
Newt, 147
Newton, 72
Niche, 133
Nicotiana, 81
Nightjar, 94
Nitrogen excretion, 113
Nomogenesis, 12, 65
Non-disjunction, 59
Normal distribution, 176, 194, 195
Novelty, 96, 106, 152
Nucleus, 34, 38, 53, 54, 57, 124 ; v. Chromosome
Nurture, 34, 36 ; v. Environment

Oak, 156
Oats, 78
Octoploid, 105
Oenothera, 31, 76, 77, 122, 187
Oligocene, 23
Oporabia autumnata, 93
Orchid, 127
Ordovician, 151
Orthogenesis, 23, 108, 124, 141, 198

< 231 >

Orthoptera, 214
Ostracodermi, 7
Ostrea, 21
Ostrich, 152
Ovule, 34, 121, 179 ; v. Egg
Owl, 94
Oxlip, 69
Oxygen, 161
Oyster, 21, 156

Pain, 159
Palaeontology, 6, 7, 20-29, 32, 107, 125, 133, 140, 144-148, 150-152, 213
Palaeozoic, 151
Paradise stocks, 35
Parallel evolution, 64-66, 139-141, 159
Parasites, 9, 10, 60, 142, 152, 159
Parrot, 152
Patella, 151
Path coefficients, 212
Pea, 57, 77, 139
Peacock, 120
Pearson, 46, 171, 194
Pegasus, 140
Pelvis, 154
Penguin, 152
Peppered moth, 98
Periodic selection, 118, 204
Permian, 147
Peroxide, 92
Petal, 114
Pheasant, 64
Phenotype, 109, 190
Philosophy, 154-170
Phthisis, 141
Physcomitrella, 72
Picasso, 168
Piebaldness, 35, 66
Pig, 95
Pigeon, 15
Pine, 93, 94, 121
Pisum, 57, 77, 139
Pithecanthropus, 150
Pituitary, 45
Placenta, 27
Plasmon, 38, 72, 86, 98, 99, 173, 179, 184
Plastid, 69
Plato, 160
Pleistocene, 84
Plum, 78
Pluralism, 155
Plymouth, 89
Poisson series, 200, 202
Polecat, 71
Pollen, 34, 38, 40, 42, 51, 53, 54, 71, 96, 121-123, 177, 179, 182, 187
Polygonum, 10
Polymorphism, 84, 119
Polyploids, 52-55, 67-69, 77-81, 134, 194
Polysomics, 51, 52, 80, 81
Populations, 83-110, 117, 138, 141, 171-213
Poppy, 121
Potassium, 58
Potato, 193
Potentilla, 80
Poultry, 14, 45, 56, 64, 73, 207
Poverty, 210
Pre-Cambrian, 145
Pregnancy, 124, 125
Primates, 148
Primrose, 69
Primula acaulis, 69, elatior, 69, floribunda, 67, 68, Juliae, 69 kewensis, 68

< 232 >

Primula malacoides, 53, obconica, 53, sinensis, 38-41, 53, 57, 96, 174, 194, 197
Primulaceae, 53
Progress, 102, 146, 151-154, 164
Protective colouring, 87, 107, 113
Proton, 157
Protozoa, 18, 145
Prunus, 78
Psychological characters, 71, 76
Pteris aquilina, 132
Puerperal fever, 92
Pure line, 17, 35, 36, 57, 58, 89, 133, 136, 176
Purpose, 12, 28, 168
Pyrus, 80

Quenn bee, 130, 137, 208

Rabbit, 45, 66, 70, 71, 74, 115
Race, geographical, 74, 108, 132-134
Radiation, 115, 157 ; v. Light, Ray
Radio-activity, 58
Rail, 152
Rain, 117
Random mating, 14, 85, 86, 98, 104, 109, 180, 185, 186, 191, 208, variation, 11, 139, 161, 162
Rare genes, 182, 184, 197-205, species, 29, 30, 32, 132, 134, 213
Rat, 65, 66, 71, 74, 136
Rational being, 154
Rays, ß, 58, X-, 47, 48, 58, 59, 74
Recapitulation, 25
Recessive, 40, 56, 64, 65, 69, 85, 96, 98, 102, 109, 110, 134, 138, 180-183, 185-190, 193, 195-197, 201, 208, 209, 211
Reciprocal crosses, 71
Red Crag, 84, Fife, 91
Reduction, 50, 59, 68, 86
Relativity, 102
Relict species, 29, 30 
Religion, 158-160 
Reproductive specialisation, 130, 131 
Reptile, 29, 105, 147, 148, 
“ Republic ”, 160 
Retardation, 149, 150 ; v. Neoteny 
Retina, 166 
Reversion, 26 
Rhaetic, 22 
Rhinanthus, 107 
Rice, 78 
Ring of chromosomes, 50, 76, 77 
Rogue peas, 56 
Romanes, 55 
Rome, 112, 113 
Rosa, Rose, 77, 78, 160 
Rosaceae, 80 
Rubus, 80 
Russell, 155 
Russia, 12, 87 
Rust, 116 
Rutherford, 157

Saints, 129
Salix, 78
Salonica, 84
Sap, 96
Scarlet fever, 92
Scent, 127, 162

< 233 >

Scientists, 129, 170
Scythians, 140
Sea, 10, 21, 22, 106, 145
Seaweed, 145
Sebright bantam, 45
Secondary association, 78
Seed, 87, 96, 97, 118, 123, 147, 187
Seedling, 179
Segregation, 11, 15, 60
Selection, artificial, 17-20, 88, 89, 95, 176, coefficient of, 97, 109, 172, 176, familial, 182-184, 187, gametic, 182-184, natural, 1-13, 15, 20, 31, 32, 57, 83-143, 158, 161, 162, 172-201, 206-215, rapid, 188, sexual, 13, 120, 161
Self-contradiction, 156
Self-fertilisation, 87, 98, 104, 109, 127,132, 134, 179, 185, 188, 199, 203
Semilethal gene, 188
Senescence, racial, 27, 125
Sensation, 157
Sensuality, 13
Sepal, 114
Sequoia gigantea, 177
Sessile animals, 152
Sex, genetics of, 48, 51, 74-76
Sex-linked genes, 99, 180, 181, 183, 184, 186
Sexual selection, v. Selection
Shakespeare, 110
Shorea, 118
Shortsight, 103
Silurian, 145, 146, 151
Sieanthropus, 150
Singleness, 42
Size, 141, 198 ; v. Height, Weight
Skilled workers, 129, 172
Skull, 151
Snail, 83, 174, 206
Snapdragon, 107, 151
Snout, 149
Snow, 42
Social animals, 130, 161, 207-210, insects, 130, 131, 183, 207, 208
Socialism, 2
Socrates, 160
Southampton, 105
Spain, 85
Spartina, 105, 106
Species crossing, 4, 31, 64, 66-82, 105-107, 134, 138, difference between, analysis, 30, 62-82, origin of, 21, 30-32, 61, 78, 105-107, 134, 138
Spelt, 79
Spermatozoon, 67, 123, 124, 179
Spine, 113, 120
Sponge, 117, 145
Spore, 71
Stable populations, 83-86, 102, 180, 186-188, 191, 197, 211, 213
Stag, 140, 148
Staphylococcus, 116
Stature, v. Height
Stem colour, 44, 96
Sterility, hybrid, 4, 31, 53, 55, 62, 64, 66-68, 70-76, 81, 105, 139, partial, 50, 53, 55, 70, 96, 105, 173, unisexual, 38, 48, 49, 70-76
Stigma, 45, 121

< 234 >

Stocks, 42, 115
Streptococcus, 92
Style, 53, 114, 115
Subspecies, 76, 108
Succession, law of, 20
Superman, 164, 165
Suture lines, 24, 25
Swamp, 147
Sweet pea, 139, 190
Systematists, 62, 133

Tail, 8, 25, 64, 120
Tapeworm, 159, 160
Taraxacum, 62, 89-91, 132, 133, 174
Tariff, 126
Taxonomy, 107, 113, 114, 116
Telescope, 166
Temperature, 36, 58, 117
Tendril, 139
Termite, 13
Tetraploid, 52-55, 186
Theology, 159, 160
Thomson, 157
Thorax, 152
Thyroid, 45
Tide, 117
Tiger, 159
Time scale, 168, 204
Titanotheria, 23
Tomato, 53-55
Tooth, 113, 147, 150
Trabant, 42
Tradition, 128
Tragedy, 168
Trajectory, 191
Trias, 22, 26
Tribe, 208
Trilobite, 151
Triploid, 52, 53, 55, 81
Trisomic, 51, 52, 80
Triticum, 78, 79
Tubercle bacillus, 93
Turritelites, 26

Umbellate habit, 99
Umbilical cord, 25
Uniqueness, 168
United States, 141 ; v. America
Universe, 102, 158
Unknown causes of evolution, 137, 138, 141
Unskilled workers, 129, 172
Unstable equilibria, 142, 196-198, 212
Uric acid, 8, 9
Use, 13, 54, 137

Value judgments, 33, 126, 129, 154, 169
Variance, 132, 197, 205
Variation, 11-13, 15, 34-61, 66, 69, 73, 106, 111, 131-134, 137, 139, 143, 158, 161, 162, 169, 174, 202, 206
Varieties, 30, 34-61, 70, 73, 82, 92, 132, 133, 214
Vegetable reproduction, 18, 34, 52, 67, 68
Vertebra, 103
Vertebrates, 145-148, 152, 166
Viability, 86, 90, 116, 123, 134, 175, 196, 207, 209 ; v. Fitness, Mortality
Victoria Cross, 129
Vigour, hybrid, 105, 139, 197
Virulence, 92, 93, 97
Vitamin D, 175
Vologda, 89
de Vries, 77

< 235 >

Wales, 21
Wallace, 21
Warren, 172
Wart, 106
Wasp, 13
Wave mechanics, 157
Waxy endosperm, 122
Weight, 10, 16, 17, 44-46, 176, 177
Weismann, 16, 36, 37
Whale, 148
Wheat, 18, 78, 79, 91, 104, 106, 121, 199
Whole, 157
Wind pollination, 127
Wing, 43, 94, 100, 110, 114, 117, 139, 156
de Winton, 45, 57
Wood, 93
Worker bee, 130, 137, 208
Worm, 7, 8, 145, 146, 159, 160
Wurtemberger, 26

X chromosome, 48, 49, 51, 74-76
X-rays, 47, 48, 58, 59, 74, 109
Xiphophorus, 106

Y chromosome, 48, 49, 51, 52, 76
Yeast, 63

Zygote, 34, 41, 50, 59, 80, 86

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