INDEX OF SUBJECTS
| PAGE | |
| Abraxa grossulariata, | [105], [193] |
| Aceras hircina, local variability, | [123] |
| Achatinellidae, local forms of, | [133] |
| Acquired characters, inheritance of, | [188 et seq.], [217], [233] |
| Acronycta psi, melanic, | [138] |
| Adaptation, problem of, | [187], [234] |
| Agelaius, local forms, | [120] |
| Agrotis, fixed and variable species, | [ 25] |
| Alkaptonuria, | [ 83] |
| Alpine Plants, growing larger, if protected, | [183] |
| Alpine Varieties, | [165] |
| Alytes obstetricans, Kammerer's experiments on, | [199], [210] |
| Amblystoma, races of, | [230] |
| Amphidasys betularia, melanic form, | [136], [138] |
| dimorphic larvae, | [141] |
| Anodonta, polymorphism of, | [130] |
| Antirrhinum, striped, | [ 57] |
| species-hybrids, | [ 99] |
| albinos, | [110] |
| Apple, will not cross with pear, | [239] |
| Arctia caja, effects of temperature, | [192] |
| larval variation in, | [231] |
| Arctic varieties, | [165] |
| Argynnis paphia and valesina in Italy, | [121] |
| Armadillo, polyembryony, | [ 42] |
| Artistic faculty, | [ 89] |
| Arum, rights and lefts, | [ 57] |
| Auriculas, short-styled selected, | [236] |
| Axis of symmetry in hand and foot, | [ 48] |
| Axolotl, alleged effect of conditions, | [230] |
| Azalea, bud-sports, | [ 55] |
Bacillus anthracis, unsegmented form, | [ 71] |
| Bacillus prodigiosus, variation in, | [213] |
| Bacteria, variation in, | [212] |
| Bacterium coli, variation in, | [214] |
| Baeolophus, geographical races of, | [159] |
| Barley, right and left-handed, | [ 58] |
| Basilarchia, geographical races of, | [161] |
| Begonia phyllomaniaca, | [ 50] |
| hybrids, | [ 51] |
| Bizarre Carnation, genetics of, | [ 54] |
| Black, as a variation from red, | [148] |
| Blackbird, varying, | [150] |
| Black Cock, fixity of, | [ 28] |
| Boarmia repandata, melanic form, | [136] |
| rhomboidaria, | [137], [139] |
| Botrytis susceptibility to, | [108] |
| Bovidae, hybrid, | [242] |
| Brachydactyly, | [ 89], [ 95] |
| Bradypus, vertebral variation, | [ 68] |
| Bud-sports geometrically irregular, | [54-57] |
| Buffalo, attempts to hybridize, | [242] |
| Bullfinch, gynandromorph, | [ 45] |
| Bulimus detritus, local variation of, | [126] |
Canary, asymmetrical markings in, | [154] |
| Canidae, hybrid, | [241] |
| Capsella, | [100] |
| Cardamine pratensis, | [239] |
| Cat, Polydactylism, | [ 53] |
| Carnation, Picotees and bizarres compared, | [ 54], [ 58] |
| Cataract, hereditary, | [ 89] |
| Certhiola, melanic, | [142] |
| Chladni figures, | [ 60] |
| Choloepus, vertebral variation in, | [ 68] |
| local variation in, | [119] |
| Cinerarias, self-sterility in, | [238] |
| Cistudo, local variation in, | [119] |
| Climatic varieties, | [164] |
| Coccaceae, variation in, | [213] |
| Coenonympha arcania, climatic forms of, | [179] |
| satyrion, | [180] |
| Coereba, melanic, | [142] |
| Colaptes, geographical races, | [147 et seq.] |
| chrysoides, | [154] |
| Colloids, growth in, | [ 65] |
| Colorado beetles, experiments on, | [218] |
| Colour blindness in twins, | [ 44] |
| Continuous variation, possible example of, | [173] |
| Coracias, geographical races of, | [160] |
| Cotton, genetics of, | [ 98], [100] |
| Coupling, | [110] |
| Crab, extra claws, | [ 74] |
| Crustacean appendages and Serial Homology, | [ 63] |
| Crystals, analogy with, | [ 78] |
| Cyclopian monsters, artificial, | [ 50] |
Daphnia, changed by environment, | [217] |
| Dasypus, polyembryony, | [ 42] |
| Dianthoecia, fixed and variable species, | [ 25] |
| Disease-resistance, | [ 87] |
| Division, power of, | |
| a fundamental attribute of living things, | [ 38] |
| Genetics of, | [ 46], [ 50] |
| Dogger Bank, large varieties on, | [125] |
| Dogs, hybrid, | [241] |
| Dominance, nature of, | [ 95] |
| Dominants, origin of new, | [ 88], [ 90], [ 95] |
| Double monsters, | [ 42] |
| Draba, experiments with, | [242] |
| Drosophila, | [ 91] |
| Payne's experiments on, | [228] |
Earthworm, regeneration, | [ 77] |
| Elephant, tusk segmented, | [ 38] |
| Entelechy, | [ 80] |
| Environmental treatment, effects of, | [188 et seq.] |
| Enzymes and genetic factors, | [ 86] |
| Epilepsy, inheritance of traumatic, | [197] |
| Equidae, sterility of hybrid, | [241] |
| Erophila, experiments with, | [242] |
| species, | [249] |
| Exacum, right and left, | [ 57] |
| Euphonia elegantissima, local forms, | [120] |
| Eupithecia rectangulata, melanic form, | [137] |
Factors, new, | [ 88] |
| loss of, | [ 96] |
| Factorial representation of varieties, | [158], [165] |
| Falcons, geographical races, | [147] |
| Fasciation, | [ 49] |
| Ferments, Boyle on, | [ 54] |
| Finger-prints of twins, | [ 44] |
| Fixity and Variability in species, | [ 25] |
| Flax, climatic experiments, | [197] |
| Fowl, Silky, | [ 84] |
| Leghorn, | [ 85], [ 90] |
| Dominant white, | [ 94] |
| Wyandotte, | [ 97] |
| Rumpless, | [ 46] |
| Foxes, incompatibility with dogs, | [241] |
| Free-martin, | [ 44] |
| Fringillidae, sterility of hybrid, | [241] |
| Fundulus, cyclopian, | [ 50] |
Gallus, invariability of wild species, | [ 13] |
| and origin of poultry, | [ 90], [ 97] |
| Genitalia, a basis for classification in insects, | [ 13] |
| Gentians, climatic experiments, | [197] |
| Geometrical structure and differentiation, | [ 54], [ 56] |
| Geometrical distinction between germ-cells and somatic cells, | [ 58] |
| Gladiolus, right and left, | [ 57] |
| Gnophus obscurata, protective colouring, | [141] |
| Goldfinch, geographical races, | [147] |
| Gonioctena variabilis, variation in sexes of, | [121] |
| Gouldian Finch, polymorphism, | [148-149] |
| Gracilaria stigmatella, experiments on, | [193] |
| Grantia, large varieties of, | [125] |
| Ground-Squirrels, local forms of, | [132] |
| Grouse, red, variation, | [ 29] |
| Guillemot, Ringed, | [150] |
| Guinea-pig, Brown-Séquard's experiments on, | [198] |
| Gynandromorphs, | [ 45] |
Heliconius erato, forms of, | [122], [164] |
| Helix lapicida, local variation of, | [126] |
| striata, | [127] |
| Heripensis, | [127] |
| Caespitum, | [127] |
| trochoides, | [127] |
| nemoralis and hortensis, | [128] |
| Helminthophila, geographical races of, | [157] |
| Hemerophila abruptaria, melanic, | [142] |
| Hepialus humuli, in Shetland, | [119] |
| Heterostyle plants, | [236] |
| Hieracium, | [ 9] |
| Himantopus, | [234] |
| Homoeosis, | [ 68] |
| Hybernia progemmaria, | [139] |
| Hybrids, sterility of, | [233 et seq.] |
Incompatibility between certain allied species, | [239] |
| Individual, geometrical independence of, | [ 58] |
| Inhibiting Factors, | [ 95] |
| Intermediates, nature of, | [131], [135] |
| Isolation, consequences of, | [118] |
Lacerta muralis, Kammerer's experiments on, | [209] |
| fiumana, | [210] |
| Leptinotarsa, Power's experiments on, | [218] |
| Limbs, extra, in pairs, | [ 72] |
| Limnaea, sinistral, | [134] |
| Linaria vulgaris, self-sterility, | [239] |
| Loasa fruits, right and left, | [ 57] |
| Lobster, extra claws, | [ 76] |
| Locality, variation connected with, | [ 14], [118], [146 et seq.], [208] |
| Lumbricus, regeneration, | [ 77] |
| Lychnis dioica and vespertina, inter-relations of, | [ 18] |
| macrocarpa, possibly a common parent of, | [ 19] |
Machetes pugnax, polymorphism of male, | [ 28] |
| Maize, Blaringhem's experiments on, | [229] |
| Maize, cumulative factors in, | [116] |
| Malformations, dominants, arising de novo, | [ 89] |
| Manx Cat, heredity, | [ 46] |
| Matthiola, | [ 84], [104], [113] |
| Melanic varieties, | [135 et seq.] |
| Memory, analogy with heredity, | [190] |
| Meristic variation, | [ 69], [ 83], [ 86] |
| Mirabilis, striped, | [ 57] |
| Models of segmentation, | [ 59], [ 60] |
| "Modes," Coutagne's conception of, | [126] |
| Mödling, peculiar race of Pieris napi at, | [178] |
| Mole, albino, | [27-28] |
| Mule, Linnaeus on, | [ 8] |
| Mutation, Matthioli on, | [ 4] |
| in Mercurialis, | [ 5] |
| in Kales, | [ 5] |
| alleged in bulbs, | [ 5] |
| Theory, | [ 97] |
| periods of, | [114] |
| in Bacteria, | [214] |
| Mutilation, consequences of, | [ 71] |
| alleged effect of, on offspring, | [229] |
| Myxococcus, variation in, | [213] |
Narwhal, asymmetry of tusks, | [ 44] |
| Nemesia strumosa, | [ 91] |
| Neuration, a basis for classification, | [ 13] |
| Nicotiana, sterility of hybrid, | [242] |
| Nightjars, varying, | [150] |
| Noctuidae, fixity and variability, | [ 25] |
| Noctua, polymorphic and fixed species, | [ 25] |
| Noctua castanea, local forms of, | [122] |
| Nomenclature, future of, | [ 94], [245] |
| Notonecta, variations of, | [130] |
Odontoptera bidentata, melanic form, | [137] |
| Oedipodidae, protectively coloured, | [140] |
| Oenothera, new dominant in, | [ 92] |
| rubricalyx and rubrinervis, | [ 92], [ 95] |
| Lamarckiana, | [ 92], [101] |
| origin of, | [102], [244] |
| has bad pollen-grains, | [102] |
| factorial analysis of, | [103] |
| pollen and egg-cells genetically dissimilar, | [104] |
| Oenothera, "twin hybrids", | [105] |
| laeta and velutina, | [105] |
| reciprocal crosses in, | [105 et seq.] |
| possible coupling in, | [111] |
| dwarfs, | [112], [114] |
| "Triple hybrids", | [114] |
| alleged variation due to treatment, | [227] |
| Ophrys, local variability, | [125] |
| Orange, polyembryony, | [ 45] |
| Osmotic growth, | [ 65] |
| Overlapping forms, | [146], [174] |
Papilio, geographical races of, | [162] |
| Papilio turnus, variation of, | [144] |
| Pararge egeria, geographical forms, | [166 et seq.] |
| Parthenogenesis, | [ 50] |
| Partula, local forms of, | [133] |
| Passer domesticus and montanus, distinctions, | [ 22] |
| Pea, round and wrinkled, | [ 95] |
| Pear, will not cross with apple, | [239] |
| Pelargonium, variegated, | [ 55] |
| bud-sports, | [ 56] |
| Periodic phenomena in structure, | [ 63] |
| Peronea, fixed and variable species, | [ 26] |
| "Petites espèces", | [248] |
| Petunia, double, | [104] |
| Phalanger maculatus, local variation, | [119] |
| Pheasant, fixity of, | [ 29] |
| Phigalia pilosaria, melanic, | [139-140] |
| Phratora vitellinae, experiments on, | [193] |
| Phyllotaxis, | [ 69] |
| Pied varieties common in Passer domesticus unknown in Montanus, | [ 23] |
| Pieris napi and bryoniae, | [174] |
| Pig, mule-footed, | [ 46] |
| Pigeon, web-footed, | [ 46], [ 49] |
| Indian Rock, a recessive form, | [ 98] |
| Pigments, nature of, | [ 83] |
| Pisum humile, hybrids with culinary peas, | [244] |
| species, | [246] |
| Planarian, regeneration of, | [ 71], [ 77] |
| Plotheia frontalis, polymorphic, | [ 26], [ 29] |
| Plusia, fixity and variation in, | [ 26] |
| Poephila gouldiae, variation of, | [148-149] |
| Polarity of individual, | [ 44] |
| Polia chi, melanic, | [138] |
| Polyanthus, short-styled selected, | [236] |
| Polydactylism in Cat, | [52-53] |
| Polyembryony, | [ 45] |
| Potato, variation in, | [ 91] |
| Poultry, evolution of, | [ 90] |
| Primula obconica, | [ 91] |
| Primula sinensis, flaked, | [ 57] |
| Leaf-shapes, | [ 70] |
| new dominant in, | [ 92] |
| sterility in, | [236] |
| "Giants", | [236] |
| Primula, species-hybrids, | [242] |
| Protective coloration, | [140] |
| Pyrrhulagra, local forms, | [120] |
| Python, twin-vertebrae, | [ 60] |
Quiscalus, geographical races of, | [156] |
Rabbit, Angora, | [ 46] |
| colours of, | [ 93] |
| Incompatibility with hare, | [242] |
| Raimannia odorata, Macdougal's experiments on, | [226] |
| Rats, Variation in, | [248] |
| Recessives, origin of, | [ 90] |
| Reciprocal crosses, giving distinct results, | [105 et seq.] |
| Regeneration, | [ 70] |
| Repulsion, | [110] |
| Reversal on Regeneration, | [ 77] |
| Rhamphocoelus, geographical forms, | [159], [184] |
| Rhinoptera, variation in jaws of, | [ 38] |
| Rhythm in repetition, | [ 69] |
| Ribs, variation of, | [ 68] |
| Rights and Lefts, | [57-58] |
| Ripples, analogous to segments, | [ 60], [ 66-67] |
| regeneration of, | [ 79] |
| Rollers, geographical races of, | [160] |
| Ruff, polymorphism of male, | [ 28] |
Salamandra, maculosa and atra, | [182], [199], [203] |
| spotted and striped, | [207] |
| geographical variation of, | [208] |
| Segmentation, nature of, | [ 63] |
| simulated mechanically, | [ 64] |
| compared with rippling, | [ 65] |
| analogies with, | [ 68] |
| Segmentation of normally unsegmented structures, | [ 38] |
| Selection, Natural, an insufficient cause of definiteness of types, | [ 17], [134], [142] |
| Sempervivum, | [250] |
| Serial Homology, the true nature of, | [ 62], [ 66] |
| Setina, Alpine varieties, | [181] |
| Sex of Twins, | [ 44] |
| Sex-factors, possible coupling of, | [111] |
| Sexual characters, variation in, | [119 et seq.] |
| Siamese twins, | [ 44] |
| Silky Fowl, | [84-85] |
| Simocephalus, changed by environment, | [218] |
| Sinistral forms, | [33-34] |
| Situs transversus, | [ 43] |
| Skate's jaws, variation in, | [ 38] |
| Sloths, vertebral variation, | [ 68] |
| Species, conceptions of, | [ 3], [ 94], [ 99], [240], [245] |
| allied, distribution of, | [185] |
| alternative uses of the term, | [245] |
| Specific difference, universality of, | [ 12] |
| of organisms compared with those of inorganic materials, | [ 15] |
| failure of theory of Selection to explain, | [ 18], [134], [247] |
| Sphyropicus varius, | [149], [156] |
| Spilosoma lubricipeda, varieties of, | [181] |
| Zatima, Heligoland form, | [181] |
| Spinal nerves, segmentation of, | [ 67] |
| Sporadic variation, | [131], [134], [248] |
| Squashes, polymorphism of, | [100] |
| Staphylococcus pyogenes, variation in, | [213] |
| Sterility of hybrids, in general, | [233] |
| in Lychnis hybrids, | [20 et seq.] |
| in crossing forms of Draba, | [243] |
| Significance of, | [244] |
| Self, | [238] |
| Stilt, | [234] |
| Stocks, | [ 84], [104], [113] |
| Striped varieties, | [ 57] |
| Substantive variation, | [ 84] |
| Subtraction-stages, | [ 93] |
| Supernumerary limbs, | [72-76] |
| Sweet pea, variation of, | [ 91] |
| sterile anthers in, | [237] |
| Symmetry compared with heredity, | [ 41] |
| Symmetry of body approximate, | [ 78] |
| Syndactyly, | [ 47] |
| in foot, | [ 48] |
| Synthetic formulae, in nomenclature, | [ 94] |
Taeniocampa, fixed and variable species, | [ 25] |
| Tamias, local forms of, | [132] |
| Tanagers, geographical races of, | [159] |
| Teeth, variation in, | [ 39], [ 67] |
| Tephrosia consortaria and consonaria, | [137], [139], [140] |
| Tephrosia species, separated by season, | [119] |
| Terminal members, variation of, | [ 68] |
| Thais rumina, local variation in, | [ 27] |
| Tolerance, persistence of diversity due to, | [ 17], [134] |
| Tomato, number of cells in fruit, | [ 46] |
| Transitional populations, rarity of, | [165] |
| an example, | [178] |
| Tropaeolum, sterile anthers in, | [237] |
| Trypanosomes, variation in, | [215] |
| Tusk, of Elephant, segmented, | [ 38] |
| of Narwhal, | [ 44] |
| Twinning, | [ 41], [ 44], [ 71] |
| heredity of, | [ 45] |
| in organs, | [ 46] |
Uria troile, variety of, | [150] |
Vanessa urticae, effects of temperature, | [191] |
| Variation, a medley of phenomena, | [14-15] |
| sporadic, | [131], [134] |
| and locality, | [118] |
| Causes of genetic, | [ 86], [ 87], [131], [212] |
| Substantive and meristic, | [ 83] |
| Veronica, specific difference in, | [ 16] |
| intermediates between species, | [ 17] |
| Vertebrae, division in, | [60-61] |
| homologies of, | [ 66] |
| Vespa, specific difference in, | [ 23] |
| Vortex, living organism compared with, | [ 40] |
Wave-motion compared with repetition of parts, | [ 62], [ 67], [ 79] |
| Wheat, cumulative factors in, | [116] |
| climatic experiments on, | [195] |
| Woodpecker, | [234] |
Zebra, pattern of stripes compared with ripples, | [ 38] |