412 
BEDDOE. 
INDEX. 
BISCHOFE. 
a subvariety of the monk pigeon, 
ii. 132 ; on spurred hens, ii. 162. 
Beddoe, Dr., on causes of difference 
in stature, i. 115. 
Bee-eater, ii. 56. 
Bees, i. 73 ; destruction of drones 
and queens by, i. 82 ; pollen-baskets 
and stings of, i. 155 ; female, se- 
condary sexual characters of, i. 254 ; 
difference of the sexes in, i. 365. 
Beetle, luminous larva of a, i. 345. 
Beetles, i. 366 ; size of the cerebral 
ganglia in, i. 145 ; dilatation of 
the fore tarsi in male, i. 343 ; 
blind, i. 367 ; stridulation of, i. 
378. 
Belgium, ancient inhabitants of, i. 
237. 
Bell, Sir C., on emotional muscles in 
man, i. 5 ; snarling muscles,” i. 
127 ; on the hand, i. 141. 
Bell, T., on the numerical porpor- 
tion of the sexes in moles, i. 305 ; 
on the newts, ii. 24 ; on the croak- 
ing of the frog, ii. 27 ; on the dif- 
ference in the coloration of the 
sexes in Zootoca vivipara, ii. 36 ; on 
moles fighting, ii. 239. 
Bell-bird, sexual difference in the 
colour of the, ii. 79. 
Bell-birds, colours of, ii. 228. 
Benevolence, manifested bv birds, 
ii. 109. 
Bennett, A. W., on the habits of 
DromoQUs irroratiis, ii. 205. 
Bennett, Dr., on birds of paradise, ii. 
89. 
Bernicla antarctica, colours of, ii. 
228. 
Bernicle gander pairing with a 
Canada goose, ii. 114. 
Bettoni, E., on local differences in 
the nests of Italian birds, ii. 171. 
-Bhoteas, colour of the beard in,'ii. 
319. 
Bhringa, disciform tail-feathers of, ii. 
83. 
Bibio, sexual differences in the genus, 
i. 349. 
Bichat, on beauty, ii. 354. 
Bile, coloured, in many animals, i. 
323. 
Bimana, i. 190. 
Birds, imitations of the songs of other 
birds by, i. 44 ; dreaming, i. 46 ; 
language of, i. 55 ; sense of beauty 
in, i. 63 ; pleasure of, in incubation, 
i. 79; male, incubation by, i. 210; 
and reptiles, alliance of, i. 213 ; 
sexual differences in the beak of 
some, i. 255 ; migratory, arrival of 
the male before the female, i. 259 ; 
apparent relation between polyga- 
my and marked sexual differences 
in, i. 270 ; monogamous, becoming 
polygamous under domestication, i. 
270; eagerness of male in pursuit 
of the female, i. 272; wild, nume- 
rical proportion of the sexes in, i. 
306 ; secondary sexual characters 
of, ii. 38 ; difference of size in the 
sexes of, ii. 43 ; fights of male, wit- 
nessed by females, ii. 49 ; display 
of male, to captivate the females, 
ii. 50 ; close attention of, to the 
songs of others, ii. 52 ; acquiring 
the song of their foster-parents, 
ii. 55 ; brilliant, rarely good song- 
sters, ii. 56 ; love-antics and dances 
of, ii. 68; coloration of, ii. 74 et 
seqq. ; moulting of, ii. 80 et seqq, ; 
unpaired, ii. 103 ; male, singing 
out of season, ii. 106 ; mutual 
affection of, ii. 108 ; in confinement, 
distinguish persons, ii. 110 ; hybrid, 
production of, ii. 113; European, 
number of species of, ii. 124; vari- 
ability of, ii. 124 ; gradation of 
secondary sexual characters in, ii. 
135 ; obscurely coloured, building 
concealed nests, ii. 169 ; young 
female, acquiring male characters, 
ii. 180 ; breeding in immature plu- 
mage, ii. 214 ; moulting of, ii. 214 ; 
aquatic, frequency of white plu- 
mage in, ii. 229 ; vocal courtship of, 
ii. 331 ; naked skin of the head and 
neck in, ii. 377. 
Birgus latro, habits of, i. 334. 
Birkbeck, Mr. on the finding of new 
mates by Golden Eagles, ii. 105. 
Birthplace of man, i. 199. 
Births, numerical proportions of the 
sexes in, in animals and man, i. 
263, 265 ; male and female, nume- 
rical proportion of, in England, i. 
300. 
Bischoff, Prof., on the agreement 
