436 
HOG. 
INDEX. 
HUNGER. 
deer, ii. 244 ; on sexual prefer- 
ences shown by reindeer, ii. 273. 
Hog, wart-, ii. 265 ; river-, ii. 266. 
Hog-deer, ii. 303. 
Holland, Sir H., on the effects of 
new diseases, i. 238. 
Homologous structures, correlated 
variation of, i. 130. 
Homoptera, i. 350 ; stridulation of 
the, and orthoptera, discussed, i. 
360. 
Honduras, Quiscalus major in, i. 307. 
Honey-buzzard of India, variation 
in the crest of, ii. 126. 
Honey-suckers, moulting of the, ii. 
83 ; Australian, nidification of, ii. 
169. 
Honour, law of, i. 99. 
Hooker, Jos., on the colour of the 
beard in man, ii. 319. 
Hoolock Gibbon, nose of, i. 192. 
Hoopoe, ii. 56 ; sounds produced by 
the male, ii. 62. 
Hoplopterus armatus, 'wing-spurs of, 
ii. 48. 
Hornbill, African, inflation of the 
neck-wattle of the male during 
courtship, ii. 72. 
Hornbills, sexual difference in the 
colour of the eyes in, ii. 129 ; nidi- 
fication and incubation of, ii. 169. 
Horne, C., on the rejection of a 
brightly-coloured locust by lizards 
and birds, i. 361. 
Horns, of deer, ii. 243, 248, 259 ; 
and canine teeth, inverse develop- 
ment of, ii. 257 ; sexual differences 
of, in sheep and goats, i. 283 ; loss 
of, in female merino sheep, i. 284; 
development of, in deer, i. 288 ; de- 
velopment of, in antelopes, i. 289 ; 
from the head and thorax, in male 
beetles, i. 370. 
Horse, polygamous, i. 267 ; canine 
teeth of male, ii. 241 ; winter 
change of the, ii. 298 ; fossil, ex- 
tinction of the, in South America, 
i. 239. 
Horses, dreaming, i. 46 ; rapid in- 
crease of, in South America, i. 135; 
diminution of canine teeth in, i. 
144; of the P^alkland Islands and 
Pampas, i. 236 ; numerical propor- 
tion of the sexes in, i. 263, 265 ; 
lighter in winter in Siberia, i. 282; 
sexual preferences in, ii. 272; pair- 
ing preferently with those of the 
same colour, ii. 295 ; numerical 
proportion of male and female 
births in, i. 303 ; formerly striped, 
ii. 305. 
Hottentot women, peculiarities of, 
i. 225. 
Hottentots, lice of, i. 220; readily 
become musicians, ii. 334 ; notions 
of female beauty of the, ii. 345 ; 
compression of nose by, ii. 352. 
House-slaves, diflerence of, from 
field-slaves, i. 246. 
Huber, P., on ants playing together, 
i. 39 ; on memory in ants, i. 45 ; 
on the intercommunication of ants, 
i. 58 ; on the recognition of each 
other by ants after separation, i. 
365. 
Hue, on Chinese opinions of the ap- 
pearance of Europeans, ii. 345. 
Human kingdom, i. 186. 
Human sacrifices, i. 68. 
Humanity, unknown among some 
savages, i. 94; deficiency of, among 
savages, i. 101. 
Humboldt, A. von, on the rationality 
of mules, i. 48 ; on a parrot pre- 
serving the language of a lost tribe, 
i. 236 ; on the cosmetic arts of 
savages, ii. 339, 340 ; on the ex- 
aggeration of natural characters by 
man, ii. 351 ; on the red painting 
of American Indians, ii. 352. 
Hume, D., on svmpathetic feelings, i. 
85. 
Humming-bird, racket-shaped fea- 
thers in the tail of a, ii. 73 ; dis- 
play of plumage by the male, ii. 86. 
Humming-birds, ornament their nests, 
i. 63, ii. 112 ; polygamous, i. 269; 
proportion of the sexes in, i. 307, 
ii. 221 ; sexual differences in, ii. 39, 
40, 151 ; pugnacity of male, ii. 40 ; 
modified primaries, of male, ii. 65; 
coloration of the sexes of, ii. 78; 
young of, ii. 220; nidificatipn of 
the, ii. 168; colours of female, ii. 
168. 
Humphreys, H. X., on the habits of 
the Stickle-back, i. 271, ii. 2. 
Hunger, instinct of, i. 89. 
