the male; Hamadryas, mane of the male.

Baboon, effects of intoxicating liquors on; ears of; diversity of the mental faculties in; hands of; habits of; variability of the tail in; manifestation of maternal affection by; using stones and sticks as weapons; co-operation of; silence of, on plundering expeditions; apparent polygamy of; polygamous and social habits of.

Baboons, courtship of.

Bachman, Dr., on the fertility of mulattoes.

Baer, K.E. von, on embryonic development; definition of advancement in the organic scale.

Bagehot, W., on the social virtues among primitive men; slavery formerly beneficial; on the value of obedience; on human progress; on the persistence of savage tribes in classical times.

Bailly, E.M., on the mode of fighting of the Italian buffalo; on the fighting of stags.

Bain, A., on the sense of duty; aid springing from sympathy; on the basis of sympathy; on the love of approbation etc.; on the idea of beauty.

Baird, W., on a difference in colour between the males and females of some Entozoa.

Baker, Mr., observation on the proportion of the sexes in pheasant-chicks.

Baker, Sir S., on the fondness of the Arabs for discordant music; on sexual difference in the colours of an antelope; on the elephant and rhinoceros attacking white or grey horses; on the disfigurements practised by the negroes; on the gashing of the cheeks and temples practised in Arab countries; on the coiffure of the North Africans; on the perforation of the lower lip by the women of Latooka; on the distinctive characters of the coiffure of central African tribes; on the coiffure of Arab women.

"Balz" of the Black-cock.

Bantam, Sebright.

Banteng, horns of; sexual differences in the colours of the.

Banyai, colour of the.

Barbarism, primitive, of civilised nations.

Barbs, filamentous, of the feathers, in certain birds.

Barr, Mr., on sexual preference in dogs.

Barrago, F., on the Simian resemblances of man.

Barrington, Daines, on the language of birds; on the clucking of the hen; on the object of the song of birds; on the singing of female birds; on birds acquiring the songs of other birds; on the muscles of the larynx in song-birds; on the want of the power of song by female birds.

Barrow, on the widow-bird.

Bartels, Dr., supernumerary mammae in men.

Bartlett, A.D., period of hatching of bird's eggs; on the tragopan; on the development of the spurs in Crossoptilon auritum; on the fighting of the males of Plectopterus gambensis; on the Knot; on display in male birds; on the display of plumage by the male Polyplectron; on Crossoptilon auritum and Phasianus Wallichii; on the habits of Lophophorus; on the colour of the mouth in Buceros bicornis; on the incubation of the cassowary; on the Cape Buffalo; on the use of the horns of antelopes; on the fighting of male wart-hogs; on Ammotragus tragelaphus; on the colours of Cercopithecus cephus; on the colours of the faces of monkeys; on the naked surfaces of monkeys.

Bartlett, on courting of Argus pheasant.

Bartram, on the courtship of the male alligator.

Basque language, highly artificial.

Bate, C.S., on the superior activity of male crustacea; on the proportions of the sexes in crabs; on the chelae of crustacea; on the relative size of the sexes in crustacea; on the colours of crustacea.

Bateman, Dr., tendency to imitation in certain diseased states; on Aphasia.

Bates, H.W., on variation in the form of the head of Amazonian Indians; on the proportion of the sexes among Amazonian butterflies; on sexual differences in the wings of butterflies; on the field-cricket; on Pyrodes pulcherrimus; on the horns of Lamellicorn beetles; on the colours of Epicaliae, etc.; on the coloration of tropical butterflies; on the variability of Papilio Sesostris and Childrenae; on male and female butterflies inhabiting different stations; on mimicry; on the caterpillar of a Sphinx; on the vocal organs of the umbrella-bird; on the toucans; on Brackyurus calvus.

Batokas, knocking out two upper incisors.

Charles Darwin

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