412 
BEDDOE. 
INDEX. 
BISCIIOFF. 
a subvariety of the monk pigeon, ) 
ii. 132 ; on spurred hens, ii. 162. 
Beddoe, Dr., on causes of difference 
in stature, i. ] 15. 
Bee-eater, ii. 56. 
Bees, i. 73; destruction of drones 
and queens by, i. 82 ; pollen-baskets 
and stings of, i. 1.55; 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 tore 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, 1 ., on the numerical porpor- 
tiou 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 Zootom vivipara , ii. 36 ; on 
moles fightiug, ii. 239. 
Bell-turd, sexual difference in the 
colour of the, ii. 79 . 
Bell-birds, colours of, ii. 228. 
Benevolence, manifested bv birds 
in 109. ’ 
Bennett, a. W., on the habits of 
VromoMs ir retrains, ii. 205. 
Bennett, Dr., on birds of paradise, ii. 
oy. 
anturctica i colours of, ii. 
Bernicle gander pairing with a 
Canada goose, ii. 114 , 
Bettow, E., on local differences in 
the nests of Italian birds, ii. 171 . 
Bhoteas, colour of the beard in,’ if. 
Mringa , disciform tail-feathers of ii. 
83. 
Bibio, sexual differences in the o-enus 
i. 349. ’ 
Bichat, on beauty, ii. 354. 
Bile, coloured, in many animals, i 
323. ’ * 
Biman a, 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 tile 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 
ol 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 
afiection of, ii. 108 ; iu 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. 
Birkueck, Mr. on the finding of new 
mates by Golden Eagles, ii. 105. 
Birthplace of man, i. 1 99. 
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 
