Hagen, H., and Walsh, B. D., on
American Neuroptera, 254.
Hair, development of, in man, 18;
character of, supposed to be deter-
mined by light and heat, 32; distri-
bution of, in man, 57, 600; possibly
removed for ornamental purposes,
58; arrangement and direction of,
151; of the early progenitors of
man, 160; different textare of, in
distinct races, 167; and skin, cor-
relation of colour of, 197; develop-
ment of, in mammals, 530; manage-
ment of, among different peoples,
575; great length of, in some
North American tribes, 580; elon-
gation of the, on the human head,
603.
Hairiness, difference of, in the sexes
in man, 559; variation of, in races
of men, 559.
Hairs and excretory pores, numerical
relation of, in sheep, 198.
Hairy family, Siamese, 601.
Halbertsma, Prof., hermaphroditism
in Serranus, 162.
Hamadryas baboon, turning over
stones, 101; mane of the male, 521.
Hamilton, C., on the cruelty of the
Kaffirs to animals, 118; on the
engrossment of the women by the
Kaffir chiefs, 595.
Hammering, difficulty of, 49.
Hancock, A., on the colours of the
nudibranch Mollusca, 261, 264.
Hands, larger at birth, in the chil-
dren of labourers, 33; structure of,
in the quadrumana, 50; and arms,
freedom of, indirectly correlated
with diminution of canines, 53.
Handwriting, inherited, 88.
Handyside, Dr., supernumerary mam-
mæ in men, 37.
Harcourt, E. Vernon, on Fringilla
cannabina 394.
Harelda glacialis, 420.
Ilare, protective colouring of the,
Hares, battles of male, 500.
Harlan, Dr., on the difference be-
tween field- and house-slaves, 196.
Harris, J. M., on the relation of com-
plexion to climate, 195.
T. W., on the Katy-did locust,
283; on the stridulation of the
grasshoppers, 286; on Eranthus
nivalis, 289; on the colouring of
Lepidoptera, 311; on the colouring
of Saturnia Io, 316.
Harting, spur of the Ornithorhynchus.
502.
Hartman, Dr., on the singing of Cicada
septende in, 282.
Hatred, persistence of, 112.
Haughton, S., on a variation of the
flexor pollicis longus in man, 42.
Hawks, feeding orphan nestling, 409.
Hayes, Dr., on the diverging of sledge-
dogs on thin ice, 75.
Haymond, R., on the drumming of the
male Tetrao umbellus, 375; on the
drumming of birds, 376.
Head, altered position of, to suit the
erect attitude of man, 55; hairiness
of, in man, 57; processes of, in
male beeties, 295; artificial alte-
rations of the form of the, 583.
Hearne, on strife for women among
the North American Indians, 361
on the North American Indians'
notion of female beauty, 578; re-
peated elopements of a North Ame
rican woman, 597.
Heart, in the human embryo, 9.
Heat, supposed effects of, 32.
Hectocotyle, 263.
Hedge warbler, 473; young of the,
Heel, small projection of, in the
Aymara Indians, 35.
Hegt, M., on the development of the
spurs in peacocks, 236.
Heliconidæ, 308; mimicry of, by
other butterflies, 323.
Heliopathes, stridulation peculiar to
the male, 305.
Heliothrix auriculata, young of, 467,
468.
Helix pomatia, example of individual
attachment in, 263.
Hellins, J., proportions of sexes of
Lepidoptera reared by, 253.
Helmholtz, on pleasure derived from
harmonies, 92; on the vibration of
the auditory hairs of crustacea,
568; the physiology of harmony,
Hemit agus, beardless in both screa
531.
Hemsbach, M. von, on medial mamma
Hepburn, Mr., on the autumn song of
the water-ouzel, 370.
Hepialus humuli, sexual difference of
Herbs, poisonous, avoided by animals,
66.
Hermaphroditism of embryos, 161.
Herodius bubulcus, vernal moult of,
393.
Heron, Sir R., on the habits of pea-
fowl, 418, 419, 443.
love-gestures of a, 380
Herons, decomposed feathers in, 385;
breeding plumage of, 391, 392
young of the, 481; sometimes
dimorphic, 484; continued growth
of crest and plumes in the males of
some, 485; change of colour in
some, 494.
Hesperomys cognatus, 568.
Hetarina, proportion of the sexes in,
254; difference in the sexes of,
290.
Heterocerus, stridulation of, 302.
Hewitt, Mr., on a game-cock killing
a kite, 363; on the recognition of
dogs and cats by ducks, 412; on
the pairing of a wild duck with a
pintail drake, 415; on the court-
ship of fowls, 417; on the coupling
of pheasants with common hens,
420.
Hilgendorf, sounds produced by crus-
taceans, 274.
Hindoo, his horror of breaking his
caste, 122, 124.
Hindoos, local difference of stature
among, 31; difference of, from
Europeans, 192; colour of the
beard in, 558.
Hipparchia Janira, 319; instability
of the ocellated spots of, 428.
Hippocampus, development of, 163;
marsupial receptacles of the male,
346.
minor, 202.
Hippopotamus, nakedness of, 56.
Hips, proportions of, in soldiers and
sailors, 32.
Hodgson, S., on the sense of duty, 97.
Hoffberg, on the horns of the rein-
deer, 503; on sexual preferences
shown by reindeer, 525.
Hoffman, Prof., protective colours,
281; fighting of frogs, 350.
Hog-deer, 546
Hog, wart-, 519; river-, 520.
Holland, Sir H., on the effects of new
diseases, 182.
Homologous
structures, correlated
Homoptera, 281; stridulation of the,
and Orthoptera, discussed, 288.
Honduras, Quiscalus major in, 248.
Honey-buzzard of India, variation in
the crest of, 424.
Honey-suckers, moulting of the, 392;
Australian, nidification of, 454.
Honour, law of, 121.
Hooker, Dr., forbearance of elephant
to his keeper, 104; on the colour
of the beard in man, 558.
Hookham, Mr., on mental concepts in
animals, 83.
Hoolock Gibbon, nose of, 150.
Hoopoe, 371; sounds produced by the
male, 376.
Hoplopterus armatus, wing-spurs of,
Hornbill, African, inflation of the
neck-wattle of the male during
courtship, 383.
Hornbills, sexual difference in the
colour of the eyes in, 425; nidifi
cation and incubation of, 454.
Horne, C., on the rejection of a
brightly-coloured locust by lizards
and birds, 289.
Horns, sexual differences of, in sheep
and goats, 230; loss of, in female
merino sheep, 231; development
of, in deer, 233; development of,
in antelopes, 234; from the head
and thorax, in male beetles, 297;
of deer, 503, 506, 515; and canine
teeth, inverse development of,
514.
Horse, fossil, extinction of the, in
South America, 191; polygamous,
217; canine teeth of male, 502;
winter change of colour, 542.
Horses, rapid increase of, in South
America, 47; diminution of canine
teeth in, 53; dreaming, 74; of
the Falkland Islands and Pam-
pas, 181; numerical proportion of
the sexes in, 215, 216; lighter in
winter in Siberia, 229; sexual
preferences in, 524; pairing pre-
ferently with those of the same
colour, 540; numerical proportion
of male and female births in, 245;
formerly striped, 547.
Hottentot women, peculiarities of, 174.
Hottentots, lice of, 170; readily be
come musicians, 570; notions of
female beauty of the, 578; com-
pression of nose by, 583.
Hough, Dr. S., men's temperature
more variable than women's, 224;
proportion of sexes in man, 243.
House-slaves, difference of, from field-
slaves, 196.
Houzeau, on the baying of the dog,
75; on reason in dogs, 76; birds
killed by telegraph wires, 80; on
the cries of domestic fowls and
parrots, 85, 87; animals feel no
pity, 102; suicide in the Aleutian
islands, 117.
Howorth, H. H., extinction of savages,
183.
Huber, P., on ants playing together,
39; on memory in ants, 74; on the
intercommunication of ants, 89; on
the recognition of each other by
ants after separation, 292.
Huc, on Chinese opinions of the ap-
pearance of Europeans, 578.
Huia, the, of New Zealand, 208.
Human, man classed alone in a, king-
dom, 147.
sacrifices, 96.
Humanity, unknown among some
savages, 118; deficiency of, among
savages, 123,
Humboldt, A. von, on the rationality
of mules, 78; on a parrot preserv-
ing the language of a lost tribe,
181; on the cosmetic arts of
savages, 574; on the exaggeration
of natural characters by man, 582;
on the red painting of American
Indians, 583.
Hume, D., on sympathetic feelings,
Humming-bird, racket-shaped feathers
in the tail of a, 384; display of
plumage by the male, 394.
Hummingbirds, ornament their nests,
92. 413; polygamous, 219; pro-
portion of the sexes in, 248, 488;
sexual differences in, 359, 442; |
pugnacity of male, 360; modified
primaries of male, 378; coloration
of the sexes of, 387; display by, 443;
nidification of the, 453; colours of
female, 453; young of, 487.
Humphreys, H. N., on the habits of
the stickle-back, 220, 332.
Hunger, instinct of, 112.
Huns, ancient, flattening of the nose
by the, 583.
Hunter, J., on the number of species
of man, 174; on secondary sexual
characters, 207; on the general
behaviour of female animals during
courtship, 222; on the muscles of
the larynx in song-birds, 371; on
the curled frontal hair of the bull,
531; on the rejection of an ass by
a female zebra, 540.
Hunter, W. W., on the recent rapid
increase of the Santali, 45; on the
Santali, 192.
Huss, Dr. Max, on mammary glands,
162.
Hussey, Mr., on a partridge distin-
guishing persons, 412.
Hutchinson, Col., example of reason-
ing in a retriever, 78.
Hutton, Capt., on the male wild goat
falling on his horns, 507.
Huxley, T. H., on the structural
agreement of man with the apes,
2; on the agreement of the brain
in man with that of lower animals,
6; on the adult age of the orang,
8; on the embryonic development
of man, 9; on the origin of man,
3, 11; on variation in the skulls of
the natives of Australia, 26; on
the abductor of the fifth meta-
tarsal in apes, 42; on the nature
of the reasoning power, 77; on the
position of man, 150; on the sub-
orders of primates, 152; on the
Lemuridæ, 157; on the Dinosauria,
158; on the amphibian affinities of
the Ichthyosaurians, 159; on vari-
ability of the skull in certain races
of man, 174; on the races of man,
176; supplement on the brain, 199.
Hybrid birds, production of, 414.
Hydrophobia communicable between
man and the lower animals, 7.
Hydroporus, dimorphism of tele
of, 276.
Hyelaphus porcinus, 546.
Hygrogonus, 345.
Hyla, singing species of, 350.
Hylobates, absence of the thumo in, 51;
upright progression of some species
of, 52; maternal affection in a.
70; direction of the hair on the
arms of species of, 151; females of,
less hairy below than males, 558.
agilis, 51; hair on the arms of,
151; musical voice of the, 527;
superciliary ridge of, 558; voice of,
567.
hoolock, sexual difference of
colour in, 537.
lar, 51; hair on the arms of,
151.
leuciscus, 51; song of, 568.
syndactylus, 51; laryngeal sac
of, 527.
Hylophila prasinana, 308.
Hymenoptera, 291; large size of the
cerebral ganglia in, 54; classifica-
tion of, 148; sexual differences in
the wings of, 277; aculeate, rela-
tive size of the sexes of, 279.
Hymenopteron, parasitic, with
sedentary male, 221.
Hyomoschus aquati us, 547.
Hyperythra, proportion of the sexes
in, 251.
Hypogymna dispar, sexual difference
of colour in, 316.
Hypopy a, coloration of, 315.
Ibex, inale, falling on his horns, 508;
beard of the, 531.
Ibis, white, change of colour of
naked skin in, during the breeding
season, 389; scarlet, young of the,
481.
tantalus, age of mature plumage
in, 483; breeding in immature
plumage, 484.
ibises, decomposed feathers in, 385;
white, 492; and black, 493.
Ichneumonidæ, difference of the sexes
in, 292.
Ichthyopterygia, 37.
Ichthyosaurians, 159.
idiots,. microcephalous, their charac-
ters and habits, 35; hairiness and
animal nature of their actions, 36;
microcephalous, imitative faculties
of, 87.
Iguana tuberculata, 354.
Iguanas, 354.
Illegitimate and legitimate children,
proportion of the sexes in, 244.
Imagination, existence of, in animas,
74.
Imitation, 68; of man by monkeys,
72; tendency to, in monkeys, micro-
(ephalous idiots and savages, 87;
influence of, 129.
Immature plumage of birds, 463, 466.
Implacentata, 157.
Implements, employed by monkeys,
81; fashioning of, peculiar to
man, 82.
Impregnation, period of, influence of,
upon sex, 245.
Improvement, progressive, man alone
supposed to be capable of, 79.
Incisor teeth, knocked out or filed by
some savages, 575.
Increase, rate of, 44; necessity of
checks in, 47.
Indecency, hatred of, a modern virtue,
119.
India, difficulty of distinguishing the
native races of, 167; Cyprinida
of, 343; colour of the beard in
races of men of, 558.
Indian, North American, honoured
for scalping a man of another tribe,
Individuality, in animals, 83.
Indopicus carlotta, colours of the
sexes of, 458.
Infanticide, prevalence of, 46, 117,
256; supposed cause of, 577; pre.
valence and causes of, 591 et seq.
Inferiority, supposed physical, of
man, 64.
Inflammation of the bowels, occur-
rence of, in Cebus Azaræ, 7.
Inheritance, 27; of long and short
sight, 33; of effects of use of vocal
and mental organs, 88; of moral
tendencies, 123, 126; laws of,
227; sexual, 232; sexually limi
ted, 444.
Inquisition, influence of the, 141.
Insanity, hereditary, 28.
Insect, fossil, from the Devonian, 289.
Insectivora, 534; absence of secondary
sexual characters in, 218.
insects, relative size of the cerebral
ganglia in, 54; male, appearance
of, before the females, 212; pursuit
of female, by the males, 221; period
of development of sexual characters
in, 236; secondary sexual cha-
racters of, 274; stridulation, 566.
Insessores, vocal organs of, 370.
Instep, depth of, in soldiers and
sailors, 32.
Instinct and intelligence, 67.
-, migratory, vanquishing the
maternal, 107, 113.
Instinctive actions, the result of in-
heritance, 105.
impulses, difference of the force
of, 110, 111; and moral impulses,
alliance of, 110.
Instincts, 66; complex origin of,
through natural selection, 67;
possible origin of some, 67; ac-
quired, of domestic animals, 104;
variability of the force of, 107;
difference of force between the
social and other, 111, 126; utilised
for new purposes, 571.
Instrumental music of birds, 375, 378.
Intellect, influence of, in natural
selection in civilised society, 136.
Intellectual faculties, their influence
on natural selection in man, 127;
probably perfected through natural
selection, 128.
Intelligence, Mr. H. Spencer on the
dawn of, 67.
Intemperance, no reproach among
savages, 119; its destructiveness,
137.
Intoxication in monkeys, 7.
Iphias glaucippe, 313.
Iris, sexual difference in the colour of
the, in birds, 383, 425.
Ischio-pubic muscle, 41.
Ithaginis cruentus, number of spurs
in, 364.
Iulus, tarsal suckers of the males of,
274.
Jackals learning from dogs to bark,
Jack-snipe, coloration of the, 491
Jacquinot, on the number of species
of man, 174.
Jaeger, Dr., length of tones increased
from carrying weights, 32; on the
difficulty of approaching herds of
wild animals, 100; male Silver-
pheasant, rejected when his plu-
mage was spoilt, 419.
Jaguars, black, 539.
Janson, E. W., on the proportions of
the sexes in Tomicus villosus, 253;
on stridulant beetles, 302.
Japan, encouragement of licentious-
ness in, 46.
Japanese, general beardlessness of the,
560; aversion of the, to whiskers,
581.
Jardine, Sir W., on the Argus phea-
sant, 384, 403.
Jarrold, Dr., on modifications of the
skull induced by unnatural position,
Jaws, smaller proportionately to the
extremities, 33; influence of food
upon the size of, 33; diminution
of, in man, 53; in man, reduced
by correlation, 562.
Jay, young of the, 481; Canada,
young of the, 481.
Jays, new mates found by, 407; dis-
tinguishing persons, 412.
Jeffreys, J. Gwyn, on the form of the
shell in the sexes of the Gastero-
poda, 262; on the influence of light
upon the colours of shells, 263.
Jelly-fish, bright colours of some,
Jenner, Dr., on the voice of the rook,
375; on the finding of new mates by
magpies, 407; on retardation of the
generative functions in birds, 409.
Jenyns, L., on the desertion of their
young by swallows, 108; on male
birds singing after the proper
season, 409.
Jerdon, Dr., on birds dreaming, 74;
on the pugnacity of the male bul-
bul, 360; on the pugnacity of the
male Ortygornis gularis, 363; on
the spurs of Galloperdix, 364; og
|