ABERRANT.

A.

ABERRANT groups, ii. 227.
Abyssinia, plants of, ii. 167.
Acclimatisation, i. 173.
Adoxa, i. 270

Affinities of extinct species, ii. 106.
of organic beings, ii. 225.
Agassiz, on Amblyopsis, i. 173.

-, on groups of species suddenly
appearing, ii. 88.

on prophetic forms, ii. 107.
on embryological succession,
ii. 120.

on the Glacial period, ii. 151.
on embryological characters,
ii. 210.

on the latest tertiary forms,
ii. 71.

on parallelism of embryologi-
cal development and geological
succession, ii. 254.

Alex., on pedicellariæ, i. 297.
Algae of New Zealand, ii. 164.
Alligators, males, fighting, i. 108.
Alternate generations, ii. 239.
Amblyopsis, blind fish, i. 173.
America, North, productions allied
to those of Europe, ii. 156.

boulders and glaciers of,

South, no modern formations

on west coast, ii. 61.

ii. 99.

neuters, structure of, i. 359.
Apes, not having acquired intel-
lectual powers, i. 282.
Aphides, attended by ants, i. 323
Aphis, development of, ii. 245.
Apteryx, i. 218.

Arab horses, i. 40.

Aralo-Caspian Sea, ii. 121.
Archeopteryx, ii. 80.

Archiac, M. de, on the succession of
species, ii. 103.

Artichoke, Jerusalem, i. 176.
Ascension, plants of, ii. 178.
Asclepias, pollen of, i. 236.
Asparagus, ii. 143.
Aspicarpa, ii. 209.

Asses, striped, i. 198.

improved by selection, i. 48.

Ateuchus, i. 168.

Aucapitaine, on land-shells, ii.

187.

B.

Babington, Mr., on British plants,
i. 58.

Baer, Von, standard of Highness, i.
151.

-, comparison of bee and fish,
ii. 118.

-, embryonic similarity of the
Vertebrata, ii. 241.

Baker, Sir S., on the giraffe, i. 278.
Balancement of growth, i. 182.
Baleen, i. 285.

Barberry, flowers of, i. 121.

Barrande, M., on Silurian colonies,
ii. 90.

on the succession of species,
ii. 103.

on parallelism of paleozoic
formations, ii. 106.

on affinities of ancient species,
ii. 108

Barriers, importance of, ii. 130.
Bates, Mr., on mimetic butterflies,
ii. 222, 223, 224.
Batrachians on islands, ii. 182.
Bats, how structure acquired, i.

218.

affinities of, ii. 227.
Bladder for swimming, in fish, i
230.

Blindness of cave animals, i. 170.
Blyth, Mr., on distinctness of Indian
cattle, i. 21.

-, on striped hemionus, i. 199.
-, on crossed geese, ii. 10.
Borrow, Mr., on the Spanish pointer,
i. 40.

Bory St. Vincent, on Batrachians,
ii. 182.

Bosquet, M., on fossil Chthamalus,
ii. 80.

Boulders, eriatic, on the Azores, ii.
149.

Brauchiæ, i. 231, 232.

of crustaceans, i. 238.

Braun, Prof., on the seeds of Fuma
riaceæ, i. 271.

Brent, Mr., on house-tumblers, i. 326..
Britain, mammals of, ii. 185.
Broca, Prof., on Natural Selection,
i. 265.

Bronn, Prof., on duration of specific
forms, ii. 66.

various objections by, i. 265.
Brown, Robert, on classification, ii.
207.

Séquard, on inherited muti-
lations, i. 168.

Busk, Mr., on the Polyzoa, i. 301.
Butterflies, mimetic, ii. 222, 223,
224.
Buzareingues, on sterility of va.ie-
ties, ii. 38.

C.

Cabbage, varieties of, crossed, i

122.

Calceolaria, ii. 7, 8.

Canary-birds, sterility of hybrids,
ii. 9.

Cape de Verde islands, productions
of, ii. 189.

-, plants of, on mountains, ii.
162.

Cape of Good Hope, plants of, i.
158; ii. 178.

Carpenter, Dr., on foraminifera, ii.
117.

Carthamus, i. 271.

Catasetum, i. 243; ii. 216.
Cats, with blue eyes, deaf, i. 13.

variation in habits of, i. 325.
curling tail when going to
spring, i. 254.

Cattle destroying fir-trees, i. 88.
- destroyed by flies in Paraguay,
i. 89.

134.

breeds of, locally extinct, i.

fertility of Indian and Euro-
pen breeds, ii. 10.

Indian, i. 21; ii. 10.

Cave. inhabitants of, bliud, i. 170.
Cecidomyia, ii. 239.

Celts, proving antiquity of man,
i. 21.

Centres of Creation, ii. 135.
Cephalopoda, structures of eyes,
i. 236.

-, development of, ii. 244.
Cercopithecus, tail of, i. 294.
Ceroxylus laceratus, i. 284.
Cervulus, ii. 9.

Cetacea, teeth and hair, i. 179.
development of the whale-

male flowers of, ii. 257.

Conclusion, general, ii. 2.3.

Conditions, slight changes in,
favourable to fertility, ii. 27.
Convergence of genera, i. 156.
Coot, i. 222.

Cope, Prof., on the acceleration or
retardation of the period of re
production, i. 232.

Coral-islands, seeds drifted to,
ii. 145.

reefs, indicating movements
of earth, ii. 145.
Corn-crake, i. 223.

Correlated variation in domestic
productions, i. 13.
Coryanthes, i. 241.

Creation, single centres of, ii. 135.
Crinum, ii. 6.

Croll, Mr., on subaerial denuda-
tion, ii. 53, 56.

on the age of our oldest for-
mations, ii. 83.

on alternate Glacial periods
in the North and South, ii. 160.
Crosses, reciprocal, ii. 14.
Crossing of domestic animals, im-
portance in altering breeds, i. 23.
, advantages of, i. 119, 120.
unfavourable to selection,

i. 125.
Crüger, Dr., on Coryanthes, i. 241.
Crustacea of New Zealand, ii. 164.
Crustacean, blind, i. 171.

air-breathers, i. 238.
Crustaceans, their chelæ, i. 300.
Cryptocerus, i. 359.
Ctenomys, blind, i. 170.

Cuckoo, instinct of, i. 319, 330.
Cunningham, Mr., on the flight of

the logger-headed duck, i. 167.
Currants, grafts of, ii. 19.
Currents of sea, rate of, ii. 144.
Cuvier, on conditions of existence,
i. 320.

Cuvier, on fossil monkeys, ii. 79.
Fred., on instinct, i. 320.
Cyclostoma, resisting salt water,
ii. 187.

-, on low plants, widely dis-
persed, ii. 196.

on widely-ranging plants
being variable, i. 67.

on naturalisation, i. 139
on winged seeds, i. 181.
on Alpine species suddenly
becoming rare, i. 210.

-, on distribution of plants with
large seeds, ii. 145.

-, on vegetation of Australia,
ii. 167.

-, on fresh-water plants, ii. 174.
on insular plants, ii. 178.
Degradation of rocks, ii. 52.
Denudation, rate of, ii. 54.

of oldest rocks, ii. 85.
of granitic areas, ii. 64.
Development of ancient forms,
ii. 116.

Devonian system, ii. 113.

Dianthus, fertility of crosses, ii.

i. 244.

on embryological characters,
ii. 210.

Eggs, young birds escaping from,
i. 106.

Egypt, productions of, not modified.
i. 263.

Electric organs, i. 234.

Elephant, rate of increase, i. 80.

of Glacial period, i. 176.

Embryology, ii. 239.

Eozoon Canadense, ii. 84.

Epilepsy inherited, i. 167.
Existence, struggle for, i. 75.

condition of, i. 261.

Extinction, as bearing on natural
selection, i. 150.

of domestic varieties, i. 145.
ii. 94.

Eye, structure of, i. 225.

Eye, correction for aberration, i
255.

Eyes, reduced in moles, i. 170.

F.

Fabre, M., on hymenoptera figut
ing, i. 108.

on parasitic sphex, i. 336.
-, on Sitaris, ii. *252.'

Falconer, Dr., on naturalisation of
plants in India, i. 80.

on elephants and mastodons,
ii. 113.

and Cautley, on mammals of
sub-Himalayan beds, ii. 122.
Falkland Islands, wolf of, ii. 183.
Faults, ii. 54.

Faunas, marine, ii. 131.

Fear, instinctive, in birds, i. 329.
Feet of birds, young molluscs ad-
hering to, ii. 174.

Fertilisation variously effected, i.
241, 252.

Fertility of hybrids, ii. 6.

from slight changes in con
ditions, ii. 28.

of crossed varieties, ii. 34.

Fir-trees destroyed by cattle, i. 88.
pollen of, i. 257.

Fish, flying, i. 218.

teleoste: n, sudden appear-

ance of, ii. 81.

cating seeds, ii. 146, 175.
fresh-water, distribution of,