The Descent of Man - Charles Darwin (children's ebooks online txt) 📗

with common hens.

Hilgendorf, sounds produced by crustaceans.

Hindoo, his horror of breaking his caste.

Hindoos, local difference of stature among; difference of, from Europeans; colour of the beard in.

Hipparchia Janira, instability of the ocellated spots of.

Hippocampus, development of; marsupial receptacles of the male.

Hippocampus minor.

Hippopotamus, nakedness of.

Hips, proportions of, in soldiers and sailors.

Hodgson, S., on the sense of duty.

Hoffberg, on the horns of the reindeer; on sexual preferences shewn by reindeer.

Hoffman, Prof., protective colours; fighting of frogs.

Hog, wart-; river-.

Hog-deer.

Holland, Sir H., on the effects of new diseases.

Homologous structures, correlated variation of.

Homoptera, stridulation of the, and Orthoptera, discussed.

Honduras, Quiscalus major in.

Honey-buzzard of India, variation in the crest of.

Honey-sucker, females and young of.

Honey-suckers, moulting of the; Australian, nidification of.

Honour, law of.

Hooker, Dr., forbearance of elephant to his keeper; on the colour of the beard in man.

Hookham, Mr., on mental concepts in animals.

Hoolock Gibbon, nose of.

Hoopoe, sounds produced by male.

Hoplopterus armatus, wing-spurs of.

Hornbill, African, inflation of the neck-wattle of the male during courtship.

Hornbills, sexual difference in the colour of the eyes in; nidification and incubation of.

Horne, C., on the rejection of a brightly-coloured locust by lizards and birds.

Horns, sexual differences of, in sheep and goats; loss of, in female merino sheep; development of, in deer; development in antelopes; from the head and thorax, in male beetles; of deer; originally a masculine character in sheep; and canine teeth, inverse development of.

Horse, fossil, extinction of the, in South America; polygamous; canine teeth of male; winter change of colour.

Horses, rapid increase of, in South America; diminution of canine teeth in; dreaming; of the Falkland Islands and Pampas; numerical proportion of the sexes, in; lighter in winter in Siberia; sexual preferences in; pairing preferently with those of the same colour; numerical proportion of male and female births in; formerly striped.

Hottentot women, peculiarities of.

Hottentots, lice of; readily become musicians; notions of female beauty of the; compression of nose by.

Hough, Dr. S., men’s temperature more variable than women’s; proportion of sexes in man.

House-slaves, difference of, from field-slaves.

Houzeau, on the baying of the dog; on reason in dogs; birds killed by telegraph wires; on the cries of domestic fowls and parrots; animals feel no pity; suicide in the Aleutian Islands.

Howorth, H.H., extinction of savages.

Huber, P., on ants playing together; on memory in ants; on the intercommunication of ants; on the recognition of each other by ants after separation.

Huc, on Chinese opinions of the appearance of Europeans.

Huia, the, of New Zealand.

Human, man, classed alone in a kingdom.

Human sacrifices.

Humanity, unknown among some savages; deficiency of, among savages.

Humboldt, A. von, on the rationality of mules; on a parrot preserving the language of a lost tribe; on the cosmetic arts of savages; on the exaggeration of natural characters by man; on the red painting of American Indians.

Hume, D., on sympathetic feelings.

Humming-bird, racket-shaped feathers in the tail of a; display of plumage by the male.

Humming-birds, ornament their nests; polygamous; proportion of the sexes in; sexual differences in; pugnacity of male; modified primaries of male; coloration of the sexes of; display by; nidification of the; colours of female; young of.

Humour, sense of, in dogs.

Humphreys, H.N., on the habits of the stickleback.

Hunger, instinct of.

Huns, ancient, flattening of the nose by the.

Hunter, J., on the number of species of man; on secondary sexual characters; on the general behaviour of female animals during courtship; on the muscles of the larynx in song-birds; on strength of males; on the curled frontal hair of the bull; on the rejection of an ass by a female zebra.

Hunter, W.W., on the recent rapid increase of the Santali; on the Santali.

Huss, Dr. Max, on mammary glands.

Hussey, Mr., on a partridge distinguishing persons.

Hutchinson, Col., example of reasoning in a retriever.

Hutton, Captain, on the male wild goat falling on his horns.

Huxley, T.H., on the structural agreement of man with the apes; on the agreement of the brain in man with that of lower animals; on the adult age of the orang; on the embryonic development of man; on the origin of man; on variation in the skulls of the natives of Australia; on the abductor of the fifth metatarsal in apes; on the nature of the reasoning power; on the position of man; on the suborders of primates; on the Lemuridae; on the Dinosauria; on the amphibian affinities of the Ichthyosaurians; on variability of the skull in certain races of man; on the races of man; Supplement on the brain.

Hybrid birds, production of.

Hydrophobia, communicable between man and the lower animals.

Hydroporus, dimorphism of females of.

Hyelaphus porcinus.

Hygrogonus.

Hyla, singing species of.

Hylobates, absence of the thumb in; upright progression of some species of; maternal affection in a; direction of the hair on the arms of species of; females of, less hairy below than males.

Hylobates agilis, hair on the arms of; musical voice of the; superciliary ridge of; voice of.

Hylobates hoolock, sexual difference of colour in.

Hylobates lar, hair on the arms of; female less hairy.

Hylobates leuciscus, song of.

Hylobates syndactylus, laryngeal sac of.

Hylophila prasinana.

Hymonoptera, large size of the cerebral ganglia in; classification of; sexual differences in the wings of; aculeate, relative size of the sexes of.

Hymenopteron, parasitic, with a sedentary male.

Hyomoschus aquaticus.

Hyperythra, proportion of the sexes in.

Hypogymna dispar, sexual difference of colour in.

Hypopyra, coloration of.

Ibex, male, falling on his horns; beard of the.

Ibis, white, change of colour of naked skin in, during the breeding season; scarlet, young of the.

Ibis tantalus, age of mature plumage in; breeding in immature plumage.

Ibises, decomposed feathers in; white; and black.

Ichneumonidae, difference of the sexes in.

Ichthyopterygia.

Ichthyosaurians.

Idiots, microcephalous, their characters and habits; hairiness and animal nature of their actions; microcephalous, imitative faculties of.

Iguana tuberculata.

Iguanas.

illegitimate and legitimate children, proportion of the sexes in.

Imagination, existence of, in animals.

Imitation, of man by monkeys; tendency to, in monkeys,; microcephalous idiots and savages; influence of.

Immature plumage of birds.

Implacentata.

Implements, employed by monkeys; fashioning of, peculiar to man.

Impregnation, period of, influence of, upon sex.

Improvement, progressive, man alone supposed to be capable of.

Incisor teeth, knocked out or filed by some savages.

Increase, rate of; necessity of checks in.

Indecency, hatred of, a modern virtue.

India, difficulty of distinguishing the native races of; Cyprinidae of; colour of the beard in races of men of.

Indian, North American, honoured for scalping a man of another tribe.

Individuality, in animals.

Indolence of man, when free from a struggle for existence.

Indopicus carlotta, colours of the sexes of.

Infanticide, prevalence of; supposed cause of; prevalence and causes of.

Inferiority, supposed physical, of man.

Inflammation of the bowels, occurrence of, in Cebus Azarae.

Inheritance, of long and short sight; of effects of use of vocal and mental organs; of moral tendencies; laws of; sexual; sexually limited.

Inquisition, influence of the.

Insanity, hereditary.

insect, fossil, from the Devonian.

Insectivora, absence of secondary sexual characters in.

Insects, relative size of the cerebral ganglia in; male, appearance of, before the females; pursuit of female, by the males; period of development of sexual characters in; secondary sexual characters of; kept in cages; stridulation.

Insessores, vocal organs of.

Instep, depth of, in soldiers and sailors.

Instinct and intelligence.

Instinct, migratory, vanquishing the maternal.

Instinctive actions, the result of inheritance.

Instinctive impulses, difference of the force; and moral impulses, alliance of.

Instincts, complex origin of, through natural selection; possible origin of some; acquired, of domestic animals; variability of the force of; difference of force between the social and other; utilised for new purposes.

Instrumental music of birds.

Intellect, influence of, in natural selection in civilised society.

Intellectual faculties, their influence on natural selection in man; probably perfected through natural selection.

Intelligence, Mr. H. Spencer on the dawn of.

Intemperance, no reproach among savages; its destructiveness.

Intoxication in monkeys.

Iphias glaucippe.

Iris, sexual difference in the colour of the, in birds.

Ischio-pubic muscle.

Ithaginis cruentus, number of spurs in.

Iulus, tarsal suckers of the males of.

Jackals learning from dogs to bark.

Jack-snipe, coloration of the.

Jacquinot, on the number of species of man.

Jaeger, Dr., length of bones increased from carrying weights; on the difficulty of approaching herds of wild animals; male Silver-pheasant, rejected when his plumage was spoilt.

Jaguars, black.

Janson, E.W., on the proportions of the sexes in Tomicus villosus; on stridulant beetles.

Japan, encouragement of licentiousness in.

Japanese, general beardlessness of the; aversion of the, to whiskers.

Jardine, Sir W., on the Argus pheasant.

Jarrold, Dr., on modifications of the skull induced by unnatural position.

Jarves, Mr., on infanticide in the Sandwich Islands.

Javans, relative height of the sexes of; notions of female beauty.

Jaw, influence of the muscles of the, upon the physiognomy of the apes.

Jaws, smaller proportionately to the extremities; influence of food upon the size of; diminution of, in man; in man, reduced by correlation.

Jay, young of the; Canada, young of the.

Jays, new mates found by; distinguishing persons.

Jeffreys, J. Gwyn, on the form of the shell in the sexes of the Gasteropoda; on the influence of light upon the colours of shells.

Jelly-fish, bright colours of some.

Jenner, Dr., on the voice of the rook; on the finding of new mates by magpies; on retardation of the generative functions in birds.

Jenyns, L., on the desertion of their young by swallows; on male birds singing after the proper season.

Jerdon, Dr., on birds dreaming; on the pugnacity of the male bulbul; on the pugnacity of the male Ortygornis gularis; on the spurs of Galloperdix; on the habits of Lobivanellus; on the spoonbill; on the drumming of the Kalij-pheasant; on Indian bustards; on Otis bengalensis; on the ear-tufts of Sypheotides auritus; on the double moults of certain birds; on the moulting of the honeysuckers; on the moulting of bustards, plovers, and drongos; on the spring change of colour in some finches; on display in male birds; on the display of the under-tail coverts by the male bulbul; on the Indian honey-buzzard; on sexual differences in the colour of the eyes of hornbills; on the markings of the Tragopan pheasant; on the nidification of the Orioles; on the nidification of the hornbills; on the Sultan yellow-tit; on Palaeornis javanicus; on the immature plumage of birds; on representative species of birds; on the habits of Turnix; on the continued increase of beauty of the peacock; on coloration in the genus Palaeornis.

Jevons, W.S., on the migrations of man.

Jews, ancient use of flint tools by the; uniformity of, in various parts of the world; numerical proportion of male and female births among the; ancient, tattooing practised by.

Johnstone, Lieut., on the Indian elephant.

Jollofs, fine appearance of the.

Jones, Albert, proportion of sexes of Lepidoptera, reared by.

Juan Fernandez, humming-birds of.

Junonia, sexual differences of colouring in species of.

Jupiter, comparison with Assyrian effigies.

Kaffir skull, occurrence of the diastema in a.

Kaffirs, their cruelty to animals; lice of the; colour of the; engrossment of the handsomest women by the chiefs of the; marriage-customs of the.

Kalij-pheasant, drumming of the male; young of.

Kallima, resemblance of, to a withered leaf.

Kulmucks, general beardlessness of; aversion of, to hairs on the face; marriage-customs of the.

Kangaroo, great red, sexual difference in the colour of.

Kant, Imm., on duty; on self-restraint; on the number of species of man.

Katy-did, stridulation of the.

Keen, Dr., on the mental powers of snakes.

Keller, Dr., on the difficulty of fashioning stone implements.

Kent, W.S., elongation of dorsal fin of Callionymus lyra; courtship of Labrus mixtus; colours and courtship of Cantharus lineatus.

Kestrels, new mates found by.

Kidney, one, doing double work in disease.

King, W.R., on the vocal organs of Tetrao cupido; on the drumming of grouse; on the reindeer; on the