The Descent of Man, and Selection in Relation to Sex

of. Migratory instinct of birds; vanquishing the maternal. Mill, J.S., on the origin of the moral sense; on the “greatest happiness principle;” on the difference of the mental powers in the sexes of man. Millipedes. Milne-Edwards, H., on the use of enlarged chelae of the male Gelasimus. Milvago leucurus, sexes and young of. Mimicry. Mimus polyglottus. Mind, difference of, in man and the highest animals; similarity of the, in different races. Minnow, proportion of the sexes in the. Mirror, behaviour of monkeys before. Mirrors, larks attracted by. Mitchell, Dr., interbreeding in the Hebrides. Mitford, selection of children in Sparta. Mivart, St. George, on the reduction of organs; on the ears of the lemuroidea; on variability of the muscles in lemuroidea; on the caudal vertebrae of monkeys; on the classification of the primates; on the orang and on man; on differences in the lemuroidea; on the crest of the male newt. Mobius, Prof., on reasoning powers in a pike. Mocking-thrush, partial migration of; young of the. Modifications, unserviceable. Moggridge, J.T., on habits of spiders; on habits of ants. Moles, numerical proportion of the sexes in; battles of male. Mollienesia petenensis, sexual difference in. Mollusca, beautiful colours and shapes of; absence of secondary sexual characters in the. Molluscoida. Monacanthus scopas and M. Peronii. Monboddo, Lord, on music. Mongolians, perfection of the senses in. Monkey, protecting his keeper from a baboon; bonnet-; rhesus-, sexual difference in colour of the; moustache-, colours of the. Monkeys, liability of, to the same diseases as man; male, recognition of women by; diversity of the mental faculties in; breaking hard fruits with stones; hands of the; basal caudal vertebrae of, imbedded in the body; revenge taken by; maternal affection in; variability of the faculty of attention in; American, manifestation of reason in; using stones and sticks; imitative faculties of; signal-cries of; mutual kindnesses of; sentinels posted by; human characters of; American, direction of the hair on the arms of some; gradation of species of; beards of; ornamental characters of; analogy of sexual differences of, with those of man; different degrees of difference in the sexes of; expression of emotions by; generally monogamous habits of; polygamous habits of some; naked surfaces of; courtship of. Monogamy, not primitive. Monogenists. Mononychus pseudacori, stridulation of. Monotremata, development of the nictitating membrane in; lactiferous glands of; connecting mammals with reptiles. Monstrosities, analogous, in man and lower animals; caused by arrest of development; correlation of; transmission of. Montagu, G., on the habits of the black and red grouse; on the pugnacity of the ruff; on the singing of birds; on the double moult of the male pintail. Monteiro, Mr., on Bucorax abyssinicus. Montes de Oca, M., on the pugnacity of male Humming-birds. Monticola cyanea. Monuments, as traces of extinct tribes. Moose, battles of; horns of the, an incumbrance. Moral and instinctive impulses, alliance of. Moral faculties, their influence on natural selection in man. Moral rules, distinction between the higher and lower. Moral sense, so-called, derived from the social instincts; origin of the. Moral tendencies, inheritance of. Morality, supposed to be founded in selfishness; test of, the general welfare of the community; gradual rise of; influence of a high standard of. Morgan, L.H., on the beaver; on the reasoning powers of the beaver; on the forcible capture of wives; on the castoreum of the beaver; marriage unknown in primeval times; on polyandry. Morley, J., on the appreciation of praise and fear of blame. Morris, F.O., on hawks feeding an orphan nestling. Morse, Dr., colours of mollusca. Morselli, E., division of the malar bone. Mortality, comparative, of female and male. Morton on the number of species of man. Moschkau, Dr. A., on a speaking starling. Moschus moschiferus, odoriferous organs of. Motacillae, Indian, young of. Moth, odoriferous. Moths, absence of mouth in some males; apterous female; male, prehensile use of the tarsi by; male, attracted by females; sound produced by; coloration of; sexual differences of colour in. Motmot, inheritance of mutilation of tail feathers; racket-shaped feathers in the tail of a. Moult, double; double annual, in birds. Moulting of birds. Moults, partial. Mouse, song of. Moustache-monkey, colours of the. Moustaches, in monkeys. Mud-turtle, long claws of the male. Mulattoes, persistent fertility of; immunity of, from yellow fever. Mule, sterility and strong vitality of the. Mules, rational. Muller, Ferd., on the Mexicans and Peruvians. Muller, Fritz, on astomatous males of Tanais; on the disappearance of spots and stripes in adult mammals; on the proportions of the sexes in some Crustacea; on secondary sexual characters in various Crustaceans; musical contest between male Cicadae; mode of holding wings in Castina; on birds shewing a preference for certain colours; on the sexual maturity of young amphipod Crustacea. Muller, Hermann, emergence of bees, from pupa; pollen-gathering of bees; proportion of sexes in bees; courting of Eristalis; colour and sexual selection with bees. Muller, J., on the nictitating membrane and semilunar fold. Muller, Max, on the origin of language; language implies power of general conception; struggle for life among the words, etc., of languages. Muller, S., on the banteng; on the colours of Semnopithecus chrysomelas. Muntjac-deer, weapons of the. Murie, J., on the reduction of organs; on the ears of the Lemuroidea; on variability of the muscles in the Lemuroidea; basal caudal vertebrae of Macacus brunneus imbedded in the body; on the manner of sitting in short-tailed apes; on differences in the Lemuroidea; on the throat-pouch of the male bustard; on the mane of Otaria jubata; on the sub-orbital pits of Ruminants; on the colours of the sexes in Otaria nigrescens. Murray, A., on the Pediculi of different races of men. Murray, T.A., on the fertility of Australian women with white men. Mus coninga. Mus minutus, sexual difference in the colour of. Musca vomitoria. Muscicapa grisola. Muscicapa luctuosa. Muscicapa ruticilla, breeding in immature plumage. Muscle, ischio-pubic. Muscles, rudimentary, occurrence of, in man; variability of the; effects of use and disuse upon; animal-like abnormalities of, in man; correlated variation of, in the arm and leg; variability of, in the hands and feet; of the jaws, influence of, on the physiognomy of the Apes; habitual spasms of, causing modifications of the facial bones, of the early progenitors of man; greater variability of the, in men than in women. Musculus sternalis, Prof. Turner on the. Music, of birds; discordant, love of savages for; reason of power of perception of notes in animals; power of distinguishing notes; its connection with primeval speech; different appreciation of, by different peoples; origin of; effects of. Musical cadences, perception of, by animals; powers of man. Musk-deer, canine teeth of male; male, odoriferous organs of the; winter change of the. Musk-duck, Australian; large size of male; of Guiana, pugnacity of the male. Musk-ox, horns of. Musk-rat, protective resemblance of the, to a clod of earth. Musophagae, colours and nidification of the; both sexes of, equally brilliant. Mussels opened by monkeys. Mustela, winter change of two species of. Musters, Captain, on Rhea Darwinii; marriages amongst Patagonians. Mutilations, healing of; inheritance of. Mutilla europaea, stridulation of. Mutillidae, absence of ocelli in female. Mycetes caraya, polygamous; vocal organs of; beard of; sexual differences of colour in; voice of. Mycetes seniculus, sexual differences of colour in. Myriapoda. Nageli, on the influence of natural selection on plants; on the gradation of species of plants. Nails, coloured yellow or purple in part of Africa. Narwhal, tusks of the. Nasal cavities, large size of, in American aborigines. Nascent organs. Nathusius, H. von, on the improved breeds of pigs; male domesticated animals more variable than females; horns of castrated sheep; on the breeding of domestic animals. Natural selection, its effects on the early progenitors of man; influence of, on man; limitation of the principle; influence of, on social animals; Mr. Wallace on the limitation of, by the influence of the mental faculties in man; influence of, in the progress of the United States; in relation to sex. Natural and sexual selection contrasted. Naulette, jaw from, large size of the canines in. Neanderthal skull, capacity of the. Neck, proportion of, in soldiers and sailors. Necrophorus, stridulation of. Nectarinia, young of. Nectariniae, moulting of the; nidification of. Negro, resemblance of a, to Europeans in mental characters. Negro-women, their kindness to Mungo Park. Negroes, Caucasian features in; character of; lice of; fertility of, when crossed with other races; blackness of; variability of; immunity of, from yellow fever; difference of, from Americans; disfigurements of the; colour of new-born children of; comparative beardlessness of; readily become musicians; appreciation of beauty of their women by; idea of beauty among; compression of the nose by some. Nemertians, colours of. Neolithic period. Neomorpha, sexual difference of the beak in. Nephila, size of male. Nests, made by fishes; decoration of, by Humming-birds. Neumeister, on a change of colour in pigeons after several moultings. Neuration, difference of, in the two sexes of some butterflies and hymenoptera. Neuroptera. Neurothemis, dimorphism in. New Zealand, expectation by the natives of, of their extinction; practice of tattooing in; aversion of natives of, to hairs on the face; pretty girls engrossed by the chiefs in. Newton, A., on the throat-pouch of the male bustard; on the differences between the females of two species of Oxynotus; on the habits of the Phalarope, dotterel, and godwit. Newts. Nicholson, Dr., on the non-immunity of dark Europeans from yellow fever. Nictitating membrane. Nidification of fishes; relation of, to colour; of British birds. Night-heron, cries of the. Nightingale, arrival of the male before the female; object of the song of the. Nightingales, new mates found by. Nightjar, selection of a mate by the female; Australian, sexes of; coloration of the. Nightjars, noise made by some male, with their wings; elongated feathers in. Nilghau, sexual differences of colour in the. Nilsson, Prof., on the resemblance of stone arrow-heads from various places; on the development of the horns of the reindeer. Nipples, absence of, in Monotremata. Nitsche, Dr., ear of foetal orang. Nitzsch, C.L., on the down of birds. Noctuae, brightly-coloured beneath. Noctuidae, coloration of. Nomadic habits, unfavourable to human progress. Nordmann, A., on Tetrao urogalloides. Norfolk Island, half-breeds on. Norway, numerical proportion of male and female births in. Nose, resemblance of, in man and the apes; piercing and ornamentation of the; very flat, not admired in negroes; flattening of the. Nott and Gliddon, on the features of Rameses II.; on the features of Amunoph III.; on skulls from Brazilian caves; on the immunity of negroes and mulattoes from yellow fever; on the deformation of the skull among American tribes. Novara, voyage of the, suicide in New Zealand. Nudibranch Mollusca, bright colours of. Numerals, Roman. Nunemaya, natives of, bearded. Nuthatch, of Japan, intelligence of; Indian. Obedience, value of. Observation, powers of, possessed by birds. Occupations, sometimes a cause of diminished stature; effect of, upon the proportions of the body. Ocelli, absence of, in female Mutilidae. Ocelli of birds, formation and variability of the. Ocelot, sexual differences in the colouring of the. Ocyhaps lophotes. Odonata. Odonestis potatoria, sexual difference of colour in. Odour, correlation of, with colour of skin; of moths; emitted by snakes in the breeding season; of mammals. Oecanthus nivalis, difference of colour in the sexes of. Oecanthus pellucidus. Ogle, Dr. W., relation between colour and power of smell. Oidemia. Oliver, on sounds produced by Pimelia striata. Omaloplia brunnea, stridulation of. Onitis furcifer, processes of anterior femora of the male, and on the head and thorax of the female. Onthophagus. Onthophagus rangifer, sexual differences of; variations in the horns of the male. Ophidia, sexual differences of. Ophidium. Opossum, wide range of, in America. Optic nerve, atrophy of the, caused by destruction of the eye. Orang-Outan, Bischoff on the agreement of the brain of the, with that of man; adult age of the; ears of the; vermiform appendage of; hands of the; absence of mastoid processes in the; platforms built by the; alarmed at the sight of a turtle; using a stick as a lever; using missiles; using the leaves of the Pandanus as a night covering; direction of the hair on the arms of the;