Blethisa multipunctata, stridulation of.
Bloch, on the proportions of the sexes in fishes.
Blood, arterial, red colour of.
Blood pheasant, number of spurs in.
Blow-fly, sounds made by.
Bluebreast, red-throated, sexual differences of the.
Blumenbach, on Man;
on the large size of the nasal cavities in American aborigines;
on the position of man;
on the number of species of man.
Blyth, E., on the structure of the hand in the species of Hylobates;
observations on Indian crows;
on the development of the horns in the Koodoo and Eland antelopes;
on the pugnacity of the males of Gallicrex cristatus;
on the presence of spurs in the female Euplocamus erythrophthalmus;
on the pugnacity of the amadavat;
on the spoonbill;
on the moulting of Anthus;
on the moulting of bustards, plovers, and Gallus bankiva;
on the Indian honey-buzzard;
on sexual differences in the colour of the eyes of hornbills;
on Oriolus melanocephalus;
on Palaeornis javanicus;
on the genus Ardetta;
on the peregrine falcon;
on young female birds acquiring male characters;
on the immature plumage of birds;
on representative species of birds;
on the young of Turnix;
on anomalous young of Lanius rufus and Colymbus glacialis;
on the sexes and young of the sparrows;
on dimorphism in some herons;
on the ascertainment of the sex of nestling bullfinches by pulling out
on orioles breeding in immature plumage;
on the sexes and young of Buphus and Anastomus;
on the young of the blackcap and blackbird;
on the young of the stonechat;
on the white plumage of Anastomus;
on the horns of Bovine animals;
on the horns of Antilope bezoartica;
on the mode of fighting of Ovis cycloceros;
on the voice of the Gibbons;
on the crest of the male wild goat;
on the colours of Portax picta;
on the colours of Antilope bezoartica;
on the colour of the Axis deer;
on sexual difference of colour in Hylobates hoolock;
on the hog-deer;
on the beard and whiskers in a monkey, becoming white with age.
Boar, wild, polygamous in India;
use of the tusks by the;
Boardman, Mr., Albino birds in U.S.
Boitard and Corbie, MM., on the transmission of sexual peculiarities in
on the antipathy shewn by some female pigeons to certain males.
Bold, Mr., on the singing of a sterile hybrid canary.
Bombet, on the variability of the standard of beauty in Europe.
Bombus, difference of the sexes in.
Bombycidae, coloration of;
pairing of the;
Bombycilla carolinensis, red appendages of.
Bombyx cynthia, proportion of the sexes in;
Bombyx mori, difference of size of the male and female cocoons of;
Bombyx Pernyi, proportion of sexes of.
Bombyx Yamamai, M. Personnat on;
proportion of sexes of.
Bonaparte, C.L., on the call-notes of the wild turkey.
Bond, F., on the finding of new mates by crows.
Bone, implements of, skill displayed in making.
Boner, C., on the transfer of male characters to an old female chamois;
on the habits of stags;
on the pairing of red deer.
Bones, increase of, in length and thickness, when carrying a greater
Bonizzi, P., difference of colour in sexes of pigeons.
Bonwick, J., extinction of Tasmanians.
Boreus hyemalis, scarcity of the male.
Bory St. Vincent, on the number of species of man;
on the colours of Labrus pavo.
Bos gaurus, horns of.
Bos sondaicus, horns of,
Botocudos, mode of life of;
disfigurement of the ears and lower lip of the.
Boucher de Perthes, J.C. de, on the antiquity of man.
Bourbon, proportion of the sexes in a species of Papilio from.
Bourien on the marriage-customs of the savages of the Malay Archipelago.
Bovidae, dewlaps of.
Bower-birds, habits of the;
ornamented playing-places of.
Bows, use of.
Brachycephalic structure, possible explanation of.
Brachyurus calvus, scarlet face of.
Bradley, Mr., abductor ossis metatarsi quinti in man.
Brain, of man, agreement of the, with that of lower animals;
convolutions of, in the human foetus;
influence of development of mental faculties upon the size of the;
influence of the development of on the spinal column and skull;
larger in some existing mammals than in their tertiary prototypes;
relation of the development of the, to the progress of language;
disease of the, affecting speech;
difference in the convolutions of, in different races of men;
supplement on, by Prof. Huxley;
development of the gyri and sulci.
Brakenridge, Dr., on the influence of climate.
Brandt, A., on hairy men.
Braubach, Prof., on the quasi-religious feeling of a dog towards his
on the self-restraint of dogs.
Brauer, F., on dimorphism in Neurothemis.
Brazil, skulls found in caves of;
compression of the nose by the natives of.
Break between man and the apes.
Bream, proportion of the sexes in the.
Breeding, age of, in birds.
Breeding season, sexual characters making their appearance in the, in
Brehm, on the effects of intoxicating liquors on monkeys;
on the recognition of women by male Cynocephali;
on the diversity of the mental faculties of monkeys;
on the habits of baboons;
on revenge taken by monkeys;
on manifestations of maternal affection by monkeys and baboons;
on the instinctive dread of monkeys for serpents;
on the use of stones as missiles by baboons;
on a baboon using a mat for shelter from the sun;
on the signal-cries of monkeys;
on sentinels posted by monkeys;
on co-operation of animals;
on an eagle attacking a young Cercopithecus;
on baboons in confinement protecting one of their number from punishment;
on the habits of baboons when plundering;
on polygamy in Cynocephalus and Cebus;
on the numerical proportion of the sexes in birds;
on the love-dance of the blackcock;
on the habits of the Black-grouse;
on sounds produced by birds of paradise;
on assemblages of grouse;
on the finding of new mates by birds;
on the fighting of wild boars;
on sexual differences in Mycetes;
on the habits of Cynocephalus hamadryas.
Brent, Mr., on the courtship of fowls.
Breslau, numerical proportion of male and female births in.
Brimstone butterfly, sexual difference of colour in the.
British, ancient, tattooing practised by.
Broca, Prof., on the occurrence of the supra-condyloid foramen in the human
anthropomorphous apes more bipedal than quadrupedal;
on the capacity of Parisian skulls at different periods;
comparison of modern and mediaeval skulls;
on tails of quadrupeds;
on the influence of natural selection;
on hybridity in man;
on human remains from Les Eyzies;
on the cause of the difference between Europeans and Hindoos.
Brodie, Sir B., on the origin of the moral sense in man.
Bronn, H.G., on the copulation of insects of distinct species.
Bronze period, men of, in Europe.
Brown, R., sentinels of seals generally females;
on the battles of seals;
on the narwhal;
on the occasional absence of the tusks in the female walrus;
on the bladder-nose seal;
on the colours of the sexes in Phoca Groenlandica;
on the appreciation of music by seals;
on plants used as love-philters, by North American women.
Browne, Dr. Crichton, injury to infants during parturition.
Brown-Sequard, Dr., on the inheritance of the effects of operations by
Bruce, on the use of the elephant's tusks.
Brulerie, P. de la, on the habits of Ateuchus cicatricosus;
on the stridulation of Ateuchus.
Brunnich, on the pied ravens of the Feroe islands.
Bryant, Dr., preference of tame pigeon for wild mate.
Bryant, Captain, on the courtship of Callorhinus ursinus.
Bubas bison, thoracic projection of.
Bubalus caffer, use of horns.
Bucephalus capensis, difference of the sexes of, in colour.
Buceros, nidification and incubation of.
Buceros bicornis, sexual differences in the colouring of the casque, beak,
and mouth in.
Buceros corrugatus, sexual differences in the beak of.
Buchner, L., on the origin of man;
on the use of the human foot as a prehensile organ;
on the mode of progression of the apes;
on want of self-consciousness, etc., in savages.
Bucholz, Dr., quarrels of chamaeleons.
Buckinghamshire, numerical proportion of male and female births in.
Buckland, F., on the numerical proportion of the sexes in rats;
on the proportion of the sexes in the trout;
on Chimaera monstrosa.
Buckland, W., on the complexity of crinoids.
Buckler, W., proportion of sexes of Lepidoptera reared by.
Bucorax abyssinicus, inflation of the neck-wattle of the male during
Buffalo, Indian, horns of the.
Buffalo, Italian, mode of fighting of the.
Buffon, on the number of species of man.
Buist, R., on the proportion of the sexes in salmon;
on the pugnacity of the male salmon.
Bulbul, pugnacity of the male;
display of under tail-coverts by the male.
Bull, mode of fighting of the;
curled frontal hair of the.
Buller, Dr., on the Huia;
the attachment of birds.
Bullfinch, sexual differences in the;
female, singing of the;
courtship of the;
widowed, finding a new mate;
attacking a reed-bunting;
nestling, sex ascertained by pulling out breast feathers.
Bullfinches, distinguishing persons;
rivalry of female.
Bulls, two young, attacking an old one;
wild, battles of.
Bull-trout, male, colouring of, during the breeding season.
Bunting, reed, head feathers of the male;
attacked by a bullfinch.
Buntings, characters of young.
Buphus coromandus, sexes and young of;
change of colour in.
Burchell, Dr., on the zebra;
on the extravagance of a Bushwoman in adorning herself;
celibacy unknown among the savages of South Africa;
on the marriage-customs of the Bushwomen.
Burke, on the number of species of man.
Burmese, colour of the beard in.
Burton, Captain, on negro ideas of female beauty;
on a universal ideal of beauty.
Bushmen, marriage among.
Bushwoman, extravagant ornamentation of a.
Bushwomen, hair of;
Bustard, throat-pouch of the male;
humming noise produced by a male;
Indian, ear-tufts of.
Bustards, occurrence of sexual differences and of polygamy among the;
love-gestures of the male;
double moult in.
Butler, A.G., on sexual differences in the wings of Aricoris epitus;
courtship of butterflies;
on the colouring of the sexes in species of Thecla;
on the resemblance of Iphias glaucippe to a leaf;
on the rejection of certain moths and caterpillars by lizards and frogs.
Butterfly, noise produced by a;
meadow brown, instability of the ocellated spots of.
Butterflies, proportion of the sexes in;
forelegs atrophied in some males;
sexual difference in the neuration of the wings of;
pugnacity of male;
protective resemblances of the lower surface of;
display of the wings by;
white, alighting upon bits of paper;
attracted by a dead specimen of the same species;
male and female, inhabiting different stations.
Buxton, C., observations on macaws;
on an instance of benevolence in a parrot.
Buzzard, Indian honey-;
variation in the crest of.
Cachalot, large head of the male.
Cadences, musical, perception of, by animals.
Caecum, large, in the early progenitors of man.
Cairina moschata, pugnacity of the male.
Californian Indians, decrease of.
Callianassa, chelae of, figured.
Callidryas, colours of sexes.
Callionymus lyra, characters of the male.
Callorhinus ursinus, relative size of the sexes of;
Calotes nigrilabris, sexual difference in the colour of.
Cambridge, O. Pickard, on the sexes of spiders;
on the size of male Nephila.
Camel, canine teeth of male.
Campbell, J., on the Indian elephant;
on the proportion of male and female births in the harems of Siam.
Canaries distinguishing persons.
Canary, polygamy of the;
change of plumage in, after moulting;
female, selecting the best singing male;
sterile hybrid, singing of a;
female, singing of the;
selecting a greenfinch;
and siskin, pairing of.
Canestrini, G., on rudimentary characters and the origin of man;
on rudimentary characters;
on the movement of the ear in man;
of the variability of the vermiform appendage in man;
on the abnormal division of the malar bone in man;
on abnormal conditions of the human uterus;
on the persistence of the frontal suture in man;
on the proportion of the sexes in silk-moths;
secondary sexual characters of spiders.
Canfield, Dr., on the horns of the Antilocapra.
Canine teeth in man, diminution of, in man;
diminution of, in horses;
disappearance of, in male ruminants;
large in the early progenitors of man.
Canines, and horns, inverse development of.
Canoes, use of.
Cantharis, difference of colour in the sexes of a species of.
proportion of the sexes in the;
pugnacity of the male;
pairing of the;
autumn meetings of the;
call of the;
duration of the courtship of;
behaviour of the female;
inconvenience of black colour to the female;
sexual difference in the coloration of the;
crimson eye-cere of the male.
Capitonidae, colours and nidification of the.
Capra aegagrus, crest of the male;
sexual difference in the colour of.
Capreolus Sibiricus subecaudatus.
Caprice, common to man and animals.
Caprimulgus, noise made by the males of some species of, with their wings.
Caprimulgus virginianus, pairing of.
Carbonnier, on the natural history of the pike;
on the relative size of the sexes in fishes;
courtship of Chinese Macropus.
Carcineutes, sexual difference of colour in.
Carduelis elegans, sexual differences of the beak in.
Carnivora, marine, polygamous habits of;
sexual differences in the colours of.
Carp, numerical proportion of the sexes in the.
Carr, R., on the peewit.
Carrier pigeon, late development of the wattle in the.
Carrion beetles, stridulation of.
Carrion-hawk, bright coloured female of.
Carus, Prof. V., on the development of the horns in merino sheep;
on antlers of red deer.
Cassowary, sexes and incubation of the.
Castnia, mode of holding wings.
Castration, effects of.
Cat, convoluted body in the extremity of the tail of a;
sick, sympathy of a dog with a.
Cataract in Cebus Azarae.
Catarrh, liability of Cebus Azarae to.
Caterpillars, bright colours of.
Cathartes jota, love-gestures of the male.
Catlin, G., correlation of colour and texture of hair in the Mandans;
on the development of the beard among the North American Indians;
on the great length of the hair in some North American tribes.
Caton, J.D., on the development of the horns in Cervus virginianus and
on the wild turkey;
on the presence of traces of horns in the female wapiti;
on the fighting of deer;
on the crest of the male wapiti;
on the colours of the Virginian deer;
on sexual differences of colour in the wapiti;
on the spots of the Virginian deer.
enticed by valerian;
Cattle, rapid increase of, in South America;
domestic, lighter in winter in Siberia;
domestic, sexual differences of, late developed;
numerical proportion of the sexes in.
Caudal vertebrae, number of, in macaques and baboons;
basal, of monkeys, imbedded in the body.
Cavolini, observations on Serranus.
Cebus, maternal affection in a;
gradation of species of.
Cebus Azarae, liability of, to the same diseases as man;
distinct sounds produced by;
early maturity of the female.
Cebus capucinus, polygamous;
sexual differences of colour in;
hair on the head of.
Cebus vellerosus, hair on the head of.
Cecidomyiidae, proportions of the sexes in.
Celibacy, unknown among the savages of South Africa and South America.
Cephalopoda, absence of secondary sexual characters in.
Cerambyx heros, stridulant organ of.
Ceratodus, paddle of.
Ceratophora aspera, nasal appendages of.
Ceratophora Stoddartii, nasal horn of.
Cerceris, habits of.
Cercocebus aethiops, whiskers, etc., of.
Cercopithecus, young, seized by an eagle and rescued by the troop;
definition of species of.
Cercopithecus cephus, sexual difference of colour in.
Cercopithecus cynosurus and griseo-viridis, colour of the scrotum in.
Cercopithecus Diana, sexual differences of colour in.
Cercopithecus petaurista, whiskers, etc., of.
Ceres, of birds, bright colours of.
Ceriornis Temminckii, swelling of the wattles of the male during courtship.
Cervulus, weapons of.
Cervulus moschatus, rudimentary horns of the female.
Cervus campestris, odour of.
Cervus canadensis, traces of horns in the female;
attacking a man;
sexual difference in the colour of.
Cervus elaphus, battles of male;
horns of, with numerous points;
long hairs on the throat of.
Cervus paludosus, colours of.
Cervus virginianus, horns of, in course of modification.
Ceryle, male black-belted in some species of.
Cetacea, nakedness of.
Ceylon, frequent absence of beard in the natives of.
Chaffinch, proportion of the sexes in the;
courtship of the.
Chaffinches, new mates found by.
Chalcophaps indicus, characters of young.
Chalcosoma atlas, sexual differences of.
Chamaeleo, sexual differences in the genus;
Chamaepetes unicolor, modified wing-feather in the male.
Chamois, danger-signals of;
transfer of male characters to an old female.
Champneys, Mr., acromio-basilar muscle and quadrupedal gait.
Chapman, Dr., on stridulation in Scolytus.
Chapuis, Dr., on the transmission of sexual peculiarities in pigeons;
on streaked Belgian pigeons.
Char, male, colouring of, during the breeding season.
Characters, male, developed in females;
secondary sexual, transmitted through both sexes;
natural, artificial, exaggeration of, by man.
Charadrus hiaticula and pluvialis, sexes and young of.
Chardin on the Persians.
Charms, worn by women.
Charruas, freedom of divorce among the.
Chasmorhynchus, difference of colour in the sexes of;
Chastity, early estimation of.
Chatterers, sexual differences in.
Cheever, Rev. H.T., census of the Sandwich Islands.
Cheiroptera, absence of secondary sexual characters in.
Chelae of crustacea.
Chelonia, sexual differences in.
Chenalopex aegyuptiacus, wing-knobs of.
Chest, proportions of, in soldiers and sailors;
large, of the Quechua and Aymara Indians.
Chevrotains, canine teeth of.
Chiasognathus, stridulation of.
Chiasognathus Grantii, mandibles of.
Children, legitimate and illegitimate, proportion of the sexes in.
Chiloe, lice of the natives of;
Chimaera monstrosa, bony process on the head of the male.
Chimaeroid fishes, prehensile organs of male.
Chimpanzee, ears of the;
representatives of the eyebrows in the;
hands of the;
absence of mastoid processes in the;
platforms built by the;
cracking nuts with a stone;
direction of the hair on the arms of the;
supposed evolution of the;
polygamous and social habits of the.
China, North, idea of female beauty in.
China, Southern, inhabitants of.
Chinese, use of flint tools by the;
difficulty of distinguishing the races of the;
colour of the beard in;
general beardlessness of the;
opinions of the, on the appearance of Europeans and Cingalese;
compression of the feet of.
Chinsurdi, his opinion of beards.
Chloeon, pedunculated eyes of the male of.
Chloephaga, coloration of the sexes in.
Chough, red beak of the.
Chromidae, frontal protuberance in male;
sexual differences in colour of.
Chrysemys picta, long claws of the male.
Chrysococcyx, characters of young of.
Chrysomelidae, stridulation of.
Cicadae, songs of the;
rudimentary sound-organs in females of.
Cicatrix of a burn, causing modification of the facial bones.
Cichla, frontal protuberance of male.
Cimetiere du Sud, Paris.
Cincloramphus cruralis, large size of male.
Cingalese, Chinese opinion of the appearance of the.
Cirripedes, complemental males of.
Civilisation, effects of, upon natural selection;
influence of, in the competition of nations.
Clanging of geese, etc.
Claparede, E., on natural selection applied to man.
Clarke, on the marriage-customs of Kalmucks.
Claus, C., on the sexes of Saphirina.
Climacteris erythrops, sexes of.
Climate, cool, favourable to human progress;
power of supporting extremes of, by man;
want of connexion of, with colour;
direct action of, on colours of birds.
Cloaca, existence of a, in the early progenitors of man.
Cloacal passage existing in the human embryo.
Clubs, used as weapons before dispersion of mankind.
Clucking of fowls.
Clythra 4-punctata, stridulation of.
Coan, Mr., Sandwich-islanders.
Cobbe, Miss, on morality in hypothetical bee-community.
Cobra, ingenuity of a.
Coccyx, in the human embryo;
convoluted body at the extremity of the;
imbedded in the body.
Cochin-China, notions of beauty of the inhabitants of.
Cock, blind, fed by its companion;
game, killing a kite;
comb and wattles of the;
preference shewn by the, for young hens;
game, transparent zone in the hackles of a.
Cock of the rock.
black, immature plumage of.
Coelenterata, absence of secondary sexual characters in.
Coffee, fondness of monkeys for.
Cold, supposed effects of;
power of supporting, by man.
Coleoptera, stridulation of;
stridulant organs of, discussed.
Colias edusa and hyale.
Collingwood, C., on the pugnacity of the butterflies of Borneo;
on butterflies being attracted by a dead specimen of the same species.
Colobus, absence of the thumb.
Colombia, flattened heads of savages of.
Colonists, success of the English as.
Coloration, protective, in birds.
Colour, supposed to be dependent on light and heat;
correlation of, with immunity from certain poisons and parasites;
purpose of, in lepidoptera;
relation of, to sexual functions, in fishes;
difference of, in the sexes of snakes;
sexual differences of, in lizards;
influence of, in the pairing of birds of different species;
relation of, to nidification;
sexual differences of, in mammals;
recognition of, by quadrupeds;
of children, in different races of man;
of the skin in man.
Colours, admired alike by man and animals;
bright, due to sexual selection;
bright, among the lower animals;
bright, protective to butterflies and moths;
bright, in male fishes;
transmission of, in birds.
Colquhoun, example of reasoning in a retriever.
Columba passerina, young of.
Colymbus glacialis, anomalous young of.
Comb, development of, in fowls.
Combs and wattles in male birds.
Community, preservation of variations useful to the, by natural selection.
Complexion, different in men and women, in an African tribe.
Compositae, gradation of species among the.
Comte, C., on the expression of the ideal of beauty by sculpture.
Conditions of life, action of changed, upon man;
influence of, on plumage of birds.
Condor, eyes and comb of the.
Conjugations, origin of.
Conscience, absence of, in some criminals.
Constitution, difference of, in different races of men.
Consumption, liability of Cebus Azarae to;
connection between complexion and.
Convergence of characters.
Cooing of pigeons and doves.
Cook, Captain, on the nobles of the Sandwich Islands.
Cope, E.D., on the Dinosauria.
Cophotis ceylanica, sexual differences of.
Copris Isidis, sexual differences of.
Copris lunaris, stridulation of.
Corals, bright colours of.
Cordylus, sexual difference of colour in a species of.
Corfu, habits of the Chaffinch in.