INDEX. 727 



Brown-Sequard, Dr., on the inheritance of the effects of opera- 

 tions by guinea-pigs, 67, 689. 



Bruce, on the use of the elephant's tusks, 578. 



Brulerie, P. de la, on the habits of Ateuchus cicatricoms, 340; on 

 the stridulation of Ateuchus, 346. 



Brilnnich, on the pied ravens of the Feroe Islands, 482. 



Bryant, Dr., preference of tame pigeon for wild mate, 475; Bry- 

 ant, Capt. , on the courtship of CaUorhin us ursinus, 596. 



Bubas bison, thoracic projection of, 337. 



Bubulus caffer, use of horns, 580. 



Bucephalus capensis, difference of the sexes of, in color, 398. 



Buceros, nidification and incubation of, 516 ; huceros bicornis, 

 sexual differences in the coloring of the casque, beak, and mouth in, 

 484; buceros corrugatus, sexual differences in the beak, 435. 



Biichner, L., on the origin of man, 3; on the use of the human 

 foot as a prehensile organ, 58; on the mode of progession of the 

 apes, 58; on want of self-consciousness, etc., in savages, 94. 



Bucholz, Dr. , quarrels of chamaeleons, 405. 



Buckinghamshire, numerical proportion of male and female births 

 in, 274. 



Buckland, F., on the numerical proportion of the sexes in rats, 

 279; on the proportion of the sexes in the trout, 282; on ChinuBra 

 monMrosa, 385. 



Buckland, W., on the complexity of crinoids, 103. 



Buckler, W., proportion of sexes of Lepidoptera reared by, 285. 



Bucorax abyssinicus, inflation of the neck- wattle of the male 

 during courtship, 435. 



Budytes Rail, 240. 



Buffalo, Cape, 580; Indian, horns of the, 576; Italian, mode of 

 fighting of the, 580. 



Buffon, on the number of species of man, 199. 



Bufo sikimmensis, 396. 



Bugs, 318. 



Buist, R., on the proportion of the sexes in salmon, 281; on the 

 pugnacity of the male salmon, 377. 



Bulbul, pugnacity of the male, 409; display of under tail-coverts 

 by the male, 456. 



Bull, mode of fighting of the, 579; curled frontal hair of the, 608. 



Buller, Dr., on the Huia, 236; the attachment of bird3, 466. 



Bullfinch, sexual differences in the, 248 ; piping, 418; female, 

 singing of the, 420; courtship of the, 455; widowed, finding a new 

 mate, 464: attacking a reed-bunting, 468; nestling, sex ascertained 

 by pulling out breast feathers, 551. 



Bullfinches, distinguishing persons, 467; rivalry of female, 477. 



Bulls, two young, attacking an old one, 115; wild, battles of. 571. 



Bull-trout, male, coloring of, during the breeding-season, 386. 



Bunting, reed, head feathers of the male, 455; attacked by a bull- 

 finch, 468. 



Buntings, characters of young, 529. 



Buphus coromandus, sexes and young of, 553; change of color in, 

 563. 



Burchell, Dr., on the zebra. 623; on the extravagance of a Bush- 

 woman in adorning herself, 658 ; celibacy unknown among the 



