INDEX
- Alcock, Colonel, on courtship of crabs, [255]
- Alder-flies, claspers of, [233]
- Amorousness, a factor in evolution, [24]
- — power of, [6], [9]
- — where absent, [6]
- Andrews, Dr. C. W., on display of Frigate-bird, [111]
- Antelopes, battles of, [64]
- — horns of, [63]
- — scent glands of, [67]
- Antennæ, sense of smell in, [199]
- Antlers, branching of, [61]
- — eaten when shed, [58]
- — in female deer, [62]
- — shedding of, [53]
- — types of, [60]
- — use of, [55]
- Ants, nuptial flight of, [297]
- — dismal fate of queen, [298]
- Apes, brilliant colours of, [45]
- — — — use of, [46]
- — family relations of, [43]
- — polygamy in, [48]
- — power of voice in, [42]
- — related to man, [41]
- Aphides, appalling fertility of, [301]
- — parthenogenesis in, [301]
- Argonaut, remarkable egg-cradle of, [269]
- Armature in birds, [117]
- Argus Pheasant, display of, [96]
- — — ocelli of, [97]
- Baboons, mane of, [44]
- Bailador, dances of, [121]
- Barrett Hamilton, Major, on Fur-seals, [85]
- Bee, Bumble, life of, [292]
- — drone, life of, [281], [289]
- — queen, as executioner, [279]
- — — execution of, [286]
- — — nuptial flight of, [279]
- — worker, evolution of, [290]
- Beetles, fighting between, [214]
- — stridulating organ of, [217]
- — vivid coloration in, [209]
- “Behaviour,” specific character of, [157]
- Birds, secondary sexual characters of, [94]
- Birds-of-Paradise, display of, [101]
- Bower-birds, coloration of, [158]
- — — origin of “bowers,” [160]
- — — singular behaviour of, [157]
- Brine-shrimp, vitality of, [304]
- Bug, extraordinary armature of, [216]
- Bustard, Australian, display of, [108]
- Bustard, Great, display of, [107]
- Butterflies, courtship of, [195]
- — excess of males in, [192]
- — experiments on, [205]
- — and female choice, [193]
- — females larger than males, [193]
- — fighting between, [194]
- — fragrance of, [200]
- — males mobbing females, [196]
- — methods of pairing, [204]
- — scent scales of, [199]
- Butterfly, Small-blue, method of
folding wings of, [187]
- Caiman, Dr. W. T., on A pus, [306]
- Campbell on courtship of spiders, [247]
- Cassowary, roar of, [112]
- Castration, effects of, [144]
- Chamæleons, armature of, [167]
- Cicada, music of, [222]
- Cockles, blindness of, [274]
- Coloration, cause of iridescent, [189]
- — forms of, [186]
- Conger-eel, huge size of females in, [178]
- Cooke, Mr. John, and the behaviour of sheep, [69]
- Courtship, meaning of, [21]
- Crabs, courtship of, [258]
- — seizing mates, [260]
- — stridulating organs of, [255]
- Crane, dances of, [120]
- Crocodile, courtship of, [164]
- Cunningham, J. T., and secondary
sexual characters, [14]
- Dancing in birds, [119]
- Darwin, his theory of Sexual Selection, [12]
- Darwin on coloration of beetles, 210, [211]
- — on coloration of mollusca, [275]
- — on “horns” of beetles, [212]
- — on mane of baboons, [44]
- — on sexual selection in butterflies, [194]
- Deer, antlers of, [53], [62]
- — courtship of, [53]
- — fatal encounters of, [55]
- “Diathetic” types, meaning of, [50]
- “Display,” function of, [183]
- — in birds, need of, [147], [149]
- Double-eyed fish, [176]
- Dragon-flies, antiquity of, [227]
- Dragonet, courtship of, [177]
- Eland, horns of, [65]
- — strange habits of, [68]
- Elephant, courtship of, [71]
- — remarkable scent glands of, [69]
- — use of tusks in, [70]
- Elephant-seal, courtship of, [87]
- Emotions and human evolution, [32]
- — and sexual selection, [17]
- Emu, air-sacs of, [112]
- Eunuchs, peculiar features of, [145]
- Extinction, causes of, [17]
- Fabre on courtship of scorpions, [252]
- Fashions among savages, [33] et seq.
- Fighting-fish, ferocity of, [182]
- Fish, disparity in size of sexes [178]
- Forbes, Dr. H. O., on deceptive coloration in a spider, [240]
- Frigate-bird, air-sacs in display of, III
- Frilled-lizard, courtship of, [165]
- Frogs, concerts of, [171]
- — courtship of, [169]
- — singing like a Greenfinch, [173]
- Fur-seals, courtship of, [81]
- — polygamy of, [81]
- — precocious sexual instincts
in, [86]
- Germ-plasm, nature of, [11]
- Giraffe, kick of, [73]
- — strong smell of, [68]
- Grasshopper, air-bladder of, [219]
- — stridulating organs of, 218, [221]
- Grebe, Great-crested, courtship of, [151]
- Groos, Professor, on emotions,
[18]
- Hippopotamus, bloody sweat of, [69]
- — teeth of, [72]
- Hooded-seal, air-sac of, [88]
- Hormones, nature of, [16]
- — part played by, [146], [147]
- Horns, evolution of, [51]
- Hottentots, remarkable peculiarities of, [31]
- Howard, H. E., on importance of “territory” [140]
- — on play in warblers, [121]
- — on sexual selection, [138]
- Huxley, Mr. Julian, on the behaviour of Mallard, [149]
- — on the Great-crested Grebe, [151]
- Hypertely, meaning of, [125], [127]
- Image, Professor Selwyn, on Vapourer Moth, [201]
- Impotency, possible consequences of, [155]
- Ingram, Sir William, on display of King Bird-of-Paradise, [102]
- Insects and sexual selection, [192]
- Katydid, song of, [222]
- Kinetogenesis, meaning of, [80]
- Leptodora, olfactory sense of, [262]
- Life, lowest forms of, [3] et seq.
- Lion, mane of, [77]
- — polygamy in, [81]
- Lizards, courtship of, 165 et seq.
- — fighting among, [167]
- Locusts, ear of, [220]
- — remarkable ornaments of, [225]
- Lucas, Dr. F. A., on sea-lions, [86]
- Males, degenerate, [307]
- — first to acquire new features, [9]
- — lead in new departures, [190]
- — where superfluous, [307]
- Mallard, remarkable behaviour of, [149]
- Man, evolution of, [22] et seq.
- “Mate-hunger,” part played by, [147]
- — power, importance of, [5]
- Mating, preferential, [155]
- May-flies, dance of death of, 229, [232]
- — nuptial flight of, [232]
- — remarkable eyes of male, [231]
- May-flies, remarkable use of stomach in, [230]
- Mayer, Mr., experiments on moths, [205]
- Moina, claspers of, [262]
- Moose, peculiar habits of, [58]
- Morgan, Professor Lloyd, on emotions, [18]
- — on factors in selection, [19], [126]
- Moth, aquatic females in, [204]
- — Eyed-hawk, display of, [201]
- — Ghost, scent-bottle of, [200]
- — Kentish Glory, sexual differences in, [203]
- — Oak-eggar, remarkable sense of smell in, [202]
- — Vapourer, remarkable sense of smell in, [201]
- Moths, bright colours of, [188]
- — diurnal, [189]
- — males, sense of smell of, [199]
- — scent organs of, [200]
- Mouth, brilliant colour in birds, [142]
- Muller, Fritz, on fragrant butterflies, [200]
- Music in birds, [123] et seq.
- Narwhal, tusk of, [90]
- Newts, courtship of, [170]
- — remarkable pairing habits of,
[170]
- Ocelli in birds, nature of, [98]
- Octopus, courtship of, [267]
- — remarkable mating habits of, [268]
- Ornament, controlling factors of, [168]
- Orthogenesis, nature of, [17]
- Osborne, Professor, on factors in evolution, [17]
- Ostrich, roar of, [112]
- Oysters, helpless condition of, [274]
- — and social reformers, [275]
- Painted Terrapin, remarkable courtship of, [168]
- Parthenogenesis in Crustacea, [304]
- — occurrence of, [276]
- — significance of, [308]
- — types of, [300]
- Peacock, display of, [95]
- Peckham, Mr., on courtship in spiders, [241]
- Pheasants, display of, [100]
- Pigment intensification, cause of, [150]
- Plovers, fatal conflicts among, [117]
- — dances of, [119]
- Plumage, evolution of, [143]
- Polyandry, human, [29]
- — in birds, [134]
- — interpretation of, [136]
- Polygamy, human, [27]
- — in birds, [115], [135]
- — in ungulates, [75]
- — interpretation of, [76], [115], [135], [136]
- Poulton, Professor E. B., on animal coloration, [186]
- — on courtship of spiders, [245]
- — on sexual selection in spiders, [245]
- Prairie-hen, air-sacs in display of, [109]
- Pugnacity in birds, [116]
- Rays, remarkable teeth of, [176]
- Reproduction, forms of, [10]
- Rhinoceros, horns of, [75]
- Ruff, amorous instincts of, [115]
- — display of, [113]
- — variability of, [114]
- Sabre-toothed tiger, huge canines of, [80]
- — jaw-flanges of, [80]
- Salmon, coloration of, [180]
- — courtship of, [179]
- Sandpiper, Pectoral, air-sacs in display of, [108]
- Scent glands, [67]
- Scorpions, courtship of, [242]
- Secondary Sexual Characters, meaning of, [13]
- Selection, forms of, [7]
- Selous, Mr. F. C., on habits of moose, [59]
- — on the mane of the lion, [78]
- Sex, beginnings of, [4]
- — birth of, [12]
- Sex-antagonism, [9]
- Sexual instincts, dominance of, [162]
- — grades of, [183]
- — importance of, [27]
- Sexual selection, definition of, [20]
- — and human evolution, [38]
- — in the human race, [32]
- — instance of working of, [147]
- Sexual Selection Theory, modification of, [154]
- Sharp, Dr. David, on stridulating organs, [219]
- Sheep, scent of, [69]
- Skull, human, malformation of, [35]
- Smith Woodward, Dr. A., on factors in evolution, [17]
- Smynthurus, remarkable courtship of, [26]
- Snail, hermaphrodite state of, [271]
- — “love-darts” of, [271]
- — significance of coloration of, [272]
- Somato-plasm, nature of, [11]
- South, Mr., on Oak-eggar moth, [202]
- Spiders, courtship of, [242] et seq.
- — dread sequel to nuptial rites, [246]
- — drumming of, [237]
- — nuptial rites in, [248]
- — remarkable coloration of, [239]
- — stridulating organs in, [237]
- Starling, Prof., on Hormones, [14], [16]
- State executions v. State pensions, [286]
- Stickle-back, paternal care in, [181]
- — remarkable nest of, [181]
- Stone-flies, degenerate wings in, [234]
- — nuptial rites performed in ice, [233]
- Stridulating organs of grass hoppers, [218]
- — nature of, [217]
- Sun-bittern, display of, [142]
- Syrinx in birds, [123]
- Termite, amazing fertility of queen, [302]
- “Territory,” importance of, [154]
- Thomson, Prof. J. A., on evolution of sex, [12], [309]
- Townsend, Mr., on sea-elephants, [87]
- Tragopans, display of, [100]
- Trimen, Dr., on deceptive coloration in a spider, [240]
- Turkey, display of, [99]
- Use, inherited effects of, [59]
- Virgin births, belief in, [296]
- Voice in birds, [123]
- Wallace, Alfred Russell, and Sexual Selection, [13], [137], [196]
- Warblers, play in, [121]
- Water-fleas, olfactory organs of, [261]
- Water-fleas, mating apparatus of, [226]
- Weismann, Professor, on coloration of butterflies, [187]
- Whales, armature of, [89]
- — battering-rams of, [179]-89
- Wheel-animalcule, vitality of, [307]
- Windpipes, where coiled, [128]
- Zebras, fighting among, [73]
Printed at The Chapel River Press, Kingston, Surrey.
ERRATUM
For the first line of page 16, instead of “by certain glands of the ductless glands,” read: “by certain of the ductless glands.”