BARROW. 



INDEX. 



BECHSTEIN. 



411 



the song of birds, ii. 52 ; on the 

 singing of female birds, ii. 54 ; on 

 birds acquiring the songs of other 

 birds, ii. 55 ; on the muscles of the 

 larynx in song-birds, ii. 55 ; on the 

 want of the power of song by female 

 birds, ii. 163. 

 Barrow, on the widow-bird, ii. 98. 

 Bartlett, a. D., on the tragopan, i. 

 270 ; on the development of the 

 spurs in Crossoptilon auriticm, i. 

 290 ; on the fighting of the males 

 of Plectroptems gamhensis, ii. 46 ; 

 on the knot, ii. 82 ; on display in 

 male birds, ii. 87 ; on the display 

 of plumage by the male Polyplcc- 

 tron, ii. 89 ; on Crossoptilon auri- 

 tum and Fhasianus Wallichii, ii. 

 93 ; on the habits of Lophophotnis, 

 ii. 121 ; on the colour of the mouth 

 in Buceros bicornis, ii. 129 ; on the 

 incubation of the cassowaiy, ii. 

 204 ; on the Cape Buffalo, ii.'250 ; 

 on the use of the horns of ante- 

 lopes, ii. 251 ; on the fighting of 

 male wart-hogs, ii. 266 ; on Ammo- 

 tragus tragelaphus, ii. 282 ; on the 

 colours of Cercopitheciis cephiis, ii. 

 291 ; on the colours of the faces of 

 monkeys, ii. 310 ; on the naked 

 surfaces of monkeys, ii. 377. 

 Bartram, on the courtship of the 



male alligator, ii. 29. 

 Basque language, highly artificial, 



i. 61. 

 Bate, C. S., on the superior activity 

 of male Crustacea, i. 272 ; on the 

 proportions of the sexes in crabs, i. 

 315 ; on the chelae of Crustacea, i. 

 330 ; on the relative size of the 

 sexes in Crustacea, i. 332 ; on the 

 colours of Crustacea, i. 335. 

 Bates, H. W., on A-ariation in the 

 form of the head of Amazonian 

 Indians, i. Ill ; on the proportion 

 of the sexes among Amazonian but- 

 terflies, i. 309; on sexual differ- 

 ences in the wings of butterflies, i. 

 345 ; on the field-cricket, i. 353 ; 

 on JPyrodes pulcherrimus, i. 367 ; 

 on the horns of Lnmellicorn beetles, 

 i. 370, 371 ; on the colours of Epi- 

 calise^ &c., i. 388 ; on the colora- 

 tion of tropical butterflies, i. 391 ; 



on the variability of Fapilio Sescs- 

 tris and Children^, i. 402 ; on male 

 and female butterflies inhabiting 

 different stations, i. 403 ; on mi- 

 mickry, i. 4-11 ; on the caterpillar 

 of a JSpImix, i. 416 ; on the vocal 

 organs of the umbrella-bird, ii. 58 ; 

 on the toucans, ii. 227 ; on Brachy- 

 urus cahus, ii. 309. 

 Batokas, knocking out two upper in- 

 cisors, ii. 340. 

 Batrachia, ii. 25 ; eagerness of male. 



i.272. 

 Bats, sexual differences in the colour 



of, ii. 286. 

 Battle, law of, i. 182 ; among beetles, 

 i. 375 ; among birds, ii. 40 ; among 

 mammals, ii. 239 et seq. ; in man, 

 ii. 323. 

 Beak, sexual difference in the forms 

 of the, ii. 39 ; in the colour of the, 

 ii. 72. 

 Beaks, of birds, bright colours of, ii. 



227. 

 Beard, development of, in man, ii. 

 317 ; analogy of the, in man and 

 the quadrumana, ii. 319 ; variation 

 of the development of the, in diffe- 

 rent races of men, ii. 321 ; estima- 

 tion of, among bearded nations, ii. 

 349 ; probable origin of the, ii. 

 379. 

 Beards, in monkeys, i. 192 ; of mam- 

 mals, ii. 282. 

 Beautiful, taste for the, in birds, 

 ii. 108 ; in the quadrumana, ii. 

 296. 

 Beauty, sense of, in animals, i. 63 ; 

 appreciation of, by birds, ii. Ill ; 

 influence of, ii. 338, 343; varui- 

 bility of the standard of, ii. 370. 

 Beavan, Lieut., on the development 

 of the horns in Cervus Eldi, i. 288. 

 Beaver, instinct and intelligence of 

 the, i. 37, 38 ; A'oice of the, ii. 277 ; 

 castoreum of the, ii. 279. 

 Beavers, battles of male, ii. 239. 

 Bechstein, on female birds choosing 

 the best singers among the males, 

 ii. 52 ; on rivalry in song-birds, ii. 

 53 ; on the singing of female birds, 

 ii. 54 ; on birds acquiring the songs 

 of other birds, ii. 55 ; on pairing 

 the canary and siskin, ii. 115 ; on 



