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Show 41~ JJEDDOE. INDEX. HISCIIOFI'. :~ s~ilJvariety of the monk pigeon, 11. l .!2 ; on ~purred hens, ii. 1():!. J3Jmno'", Dr., on causes of dill'crence in stature, i. 115. 13~-:'"-EATEH, ii. 5G. llEI,S, i. 73; destruction of drones and queens by, i. 82; pollen-baskets and stings ot; i. 155; female, sec? n.clary sexual characters ot; i. 254; cltllerencc of the sexes in, i. 365. 13EETJ,J,, l~tmiuous larva of a, i. 345. l3EETJ,J;s, 1. 366; size of the cerebral g:mglia in, i. 145; dilatation of the fore tarsi in male i. :!43 · blind, i. 367 ; stridulation of. i: :378. , B1;:1.G JU)l, ancient. inhabitants of. i. 2:37. , 13ELL, Sir C., on emotional muscles in man, i. 5 ; " ·narling muscles," i. 127 ; on the hand, i. 141. 13E~L, T.! on the numerical porportlon of the sexes in moles, i. :105; on the newt·, ii. 24; on the croaking of the frog, ii. 27 ; on the dif~ fcrence in the coloration of the sexes in Zootoca vivipw·a, ii. 36; on moles fighting, ii. 2:19. BI·:LJ,-lllJW, sexual diU'crence in the col~ur of the, ii. 79. 13tcr,l,-llmos, colours of, ii. 228. 13E="'I,YOr,J,SCE, manifestell uv birds ii. 109. ' , BENNETT, A. W., on the habits of Droma;us irroratus. ii. 203. J3J·:NNErr, Dr., on birds of paradise, ii. 89. Jlcmicla antarctica, colours of. ii. 2:!8. ' 13JmNICLE gander pairing with a Uanada goose, ii. 114. 13J,;TTONr, E., on local difl'crences in the nosts of Italian birrls, ii. 171. J3JIOTEAS, colour of the beard in 'ii. 319. ,_ Bl11·inga, disciform tail-feathers of ii. 8:3. , Bibio, sexual differences in the "'enus i. 349. "' , 13ICIIAT, on beauty, ii. 354. BILl·:, coloured, in many animal: i. 323. ' J3U1ANA, i. 190. J3IRDS, imitations of the songs of other birds by, i. 44; dreanling, i. 4ti ; language of, i. 55; sense of beanty in, i. G:J; pleasure of, in incubation, i. 79; male, incubation hy, i. 210; and reptiles, alliance of, i. 213; sexual dill'crences in the beak of some, i. 255; migratory, arriml of the male before the female, i, 259 ; npparent relation between polygamy and marked sexual difi'crences · in, i. 270 ; monogamous, becoming polygamous under domestication, i. ~70; eagerness of male in Jltll'Suit of the female, i. 272; wild, numerical proportion of the sexes in, i. 306 ; secontlary sexual characters of, ii. 38 ; difl'crence of size in the sexes of, ii. 4:3; fights of male, witnessed by females, ii. 49; display of male, to captivate the females, ii. 50; close attention of; to the songs of others, ii .. ')~; acquiring the song of their foster-parents, ii. 55?. b!·illiaut, rare!y good songsters, 11. <l6; lo\·e-antJCs and dances of, ii. G8; coloration of, ii. 74 et scqq.; moulting of; ii. 80 ct scqq.; unpaired, ii. 103; male, sincrincr out of season, ii. 106 ; mutual affection of, ii. 108; in confinement, distingubh persons, ii. 110; hybrid, production of, ii. 113; European, number of species of, ii. 124; Yariability of, ii. 124; gradation of secondary sexual characters in ii 135; obscurely coloured, build,ing concealed nests, ii. 169; youn"' ~~male, acquiring male charnctm·;, 11. 180; breeding in immature plumage, ii. 214; moulting of, ii. 214; aquatic, frequency of white plumage in, ii. 229; vocal courtship ot; ii. ::131 ; naked skin of the head and neck in, ii. 377. Bil'{fttS latro, habits of, i. 334. BuuwECK, Mr. on the finding of new mates by Golden Eagles, ii. 105. BmTllPLACE of man, i. 199. BIRTHS, numerical proportions of the Sixes in, in animals and man, i. 263, 265 ; male and female numerical proportion of, in Eurriand i. 300. 0 ' 13rSCllOFF, Prof., on the agreement HTSIIOI'. INDEX. 1JLY'fH. between the brnins of man and of the Orang, i. 11; figure of the embryo of the dog, i. 15; on the convolutions of the brain in the human frotus, i. 16; on the difl'crence between the skulls of man and the quaclrumana, i. 1()0. l3ISIIOI', J., on the vocnl organs of frogs, ii. 28; on the vocal organs of col'Yine birds, ii. 53 ; on the trachea of the Merganser, ii. 60. BISON, American, mane of the male, ii. 267. 13rrTERNS, dwarf, coloration of the sexes of, ii. 179. Biziw·a lobata, musky odonr of the male, ii. 38; large size of male, ii. 43. Br,ACKBIRD, sexual differences in the, i. 268; proportion of the sexes in the, i. :107; :tcquisition of a song by a, ii. 55; colour of the beak in the sexes of the, ii. 72, 227; pairing with a thrush, ii. 11:3; colours and nidil'ication of the, ii. 170; young of the, ii. 219; sexual difference in coloration of the, ii. 226. Br.ACK-BUCK, Imlinu, sexual difl'erencc in the colour of the, ii. 288. BLACKCAP, arrival of the nHlle, before the female, i. 259 ; young of the, ii. 219. BI.ACK -COCK, polygamous, i. 269; proportion of the sexes in the, i. 1306; pugnacity ami love-dance of the, ii. 45; call of the, ii. 60; moulting of the, ii. 8:1; duration of the courtship of the, ii. 100; sexual diflcrence in coloration of the, ii. 226 ; crimson eye-cere of the, ii. 227; and pheasant, hybrids of, ii. 113. J3J,ACK-GROUSE:, characters of young, ii. 185, 194. J3J,ACKWALL, J., on the speaking of the magpie, i. 59 ; on the desertion of their young by swallows, i. 84; on the superior activity of male spiders, i. 272 ; on the proportion of the sexes in spiders, i. 314; on sexual variation of colour in spiders, i. ::137 ; on male Rpiders, i. 3::18. BLADDEL~-NOSE Seal, hood of the, ii. 278. BLAINE, on the afl'ections of dogs, ii. 270. BLAIR, Dr., on the rclatil'e liability o! Europeans to yellow fever, i. 243. BLAKlo, C. C., on the jaw from La Naulette, i. 126. llLAKISTOX, Capt., on the American snipe, ii. 64 j on the dances or J'ctrao ]Jha~ittncltus, ii. 69. 13r.AS1l~s, Dr., on the species of J::uropean birds, ii. 124. Bledins tannts, hornlike processes of· male, i. 374. BLlmDING, tendency to profuse, i. 292. Br,KNKmox, 1\Jr., on sexual preference in horses, ii. 272. 13r,J·:Nxms, crest developed on thehead of male, during the breedingseason, ii. 12. Blcthiset multipwwtata, stridulation of, i, 379. Bwcn, on the proportions of the sexes in Fishes, i. :308. BLOOD, arterial, red colour of, i. :323. BLOOD-PI!EASA:NT, number of spursin, ii. 46. 13r.Ul~BRJ<:AST, red-throated, sexual differences of the, ii. 195. BLUl\!KNJJACII, on Man, i. 111; on thelarge size of the nasal cavities in American aborigines, i. 119; on the position of mnn, i. 190; on the number of species of man, i. 226. BLYTH, !::., obsen'ations on Indian crows, i. 77; on the structure of the hand in species of Ifylobates, i. 140; on the ascertainment of the· sex of nestling bullfinches by pulling out breast-feathers, ii. 24; on the pugnacity of the males of Gallinttlet c1·istata, ii. 41 ; on the presence of spurs in the female Ettplocrtmns Cl'!fihrophthalmtts, ii. 46; on the pugnacity of the amadavat, ii. 49 ; on the spoonbill, ii. 60; on the moulting of Antlms, ii. 83; on the moulting of bustards, plovers, and Gatltts banlliva, ii. 84; on the Indian honey-buzzard, ii. 126; on sexual differences in the colour OI the eyes of hornbills, ii. 129; on Orioltts melanoccphnlus, ii. 178 ; onPalmomisjavanicus, ii. 179; on the |