Falkland Islands, horses of.
Fallow-deer, different coloured herds of.
Famines, frequency of, among savages.
Farr, Dr., on the effects of profligacy; on the influence of marriage on mortality.
Farrar, F.W., on the origin of language; on the crossing or blending of languages; on the absence of the idea of God in certain races of men; on early marriages of the poor; on the middle ages.
Farre, Dr., on the structure of the uterus.
Fashions, long prevalence of, among savages.
Faye, Prof., on the numerical proportion of male and female births in Norway and Russia; on the greater mortality of male children at and before birth.
Feathers, modified, producing sounds; elongated, in male birds; racket-shaped; barbless and with filamentous barbs in certain birds; shedding of margins of.
Feeding, high, probable influence of, in the pairing of birds of different species.
Feet, thickening of the skin on the soles of the; modification of, in man.
Felis canadensis, throat-ruff of.
Felis pardalis and F. mitis, sexual difference in the colouring of.
Female, behaviour of the, during courtship.
Female birds, differences of.
Females, presence of rudimentary male organs in; preference of, for certain males; pursuit of, by males; occurrence of secondary sexual characters in; development of male character by.
Females and males, comparative numbers of; comparative mortality of, while young.
Femur and tibia, proportions of, in the Aymara Indians.
Fenton, Mr., decrease of Maories; infanticide amongst the Maories.
Ferguson, Mr., on the courtship of fowls.
Fertilisation, phenomena of, in plants; in the lower animals.
Fertility lessened under changed conditions.
Fevers, immunity of Negroes and Mulattoes from.
Fiber zibethicus, protective colouring of it.
Fick, H., effect of conscription for military service.
Fidelity, in the elephant; of savages to one another; importance of.
Field-slaves, difference of, from house-slaves.
Fiji Archipelago, population of the.
Fiji Islands, beards of the natives; marriage-customs of the.
Fijians, burying their old and sick parents alive; estimation of the beard among the; admiration of, for a broad occiput.
Filial affection, partly the result of natural selection.
Filum terminale.
Finch, racket-shaped feathers in the tail of a.
Finches, spring change of colour in; British, females of the.
Fingers, partially coherent, in species of Hylobates.
Finlayson, on the Cochin Chinese.
Fire, use of.
Fischer, on the pugnacity of the male of Lethrus cephalotes.
Fischer, F. Von, on display of brightly coloured parts by monkeys in courtship.
Fish, eagerness of male; proportion of the sexes in; sounds produced by.
Fishes, kidneys of, represented by Corpora Wolffiana in the human embryo; male, hatching ova in their mouths; receptacles for ova possessed by; relative size of the sexes in; fresh-water, of the tropics; protective resemblances in; change of colour in; nest-building; spawning of; sounds produced by; continued growth of.
Flamingo, age of mature plumage.
Flexor pollicis longus, similar variation of, in man.
Flies, humming of.
Flint tools.
Flints, difficulty of chipping into form.
Florida, Quiscalus major in.
Florisuga mellivora.
Flounder, coloration of the.
Flower, W.H., on the abductor of the fifth metatarsal in apes; on the position of the Seals; on the Pithecia monachu; on the throat-pouch of the male bustard.
Fly-catchers, colours and nidification of.
Foetus, human, woolly covering of the; arrangement of the hair on.
Food, influence of, upon stature.
Foot, prehensile power of the, retained in some savages; prehensile, in the early progenitors of man.
Foramen, supra-condyloid, exceptional occurrence of in the humerus of man; in the early progenitors of man.
Forbes, D., on the Aymara Indians; on local variation of colour in the Quichuas; on the hairlessness of the Aymaras and Quichuas; on the long hair of the Aymaras and Quichaus.