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INDEX.

ABERRANT. BAER.

A.

Aberrant groups, 379.
Abyssinia, plants of, 340.
Acclimatisation, 112.
Adoxa, 173.

Affinities of extinct species, 301.

of organic beings, 378.

Agassiz, on Amblyopsis, 112.

, on groups of species suddenly

appearing, 289.

, on prophetic forms, 301.

, on embryological succession,

310.

, on the Glacial period, 330.

, on embryological characters,

368.

, on the latest tertiary forms, 278.

, on parallelism of embryological

development and geological suc-
cession, 396.

, Alex., on pedicellarise, 191.

Algse of New Zealand, 338.

Alligators, males, fighting, 69.

Alternate generations, 387.

Amblyopsis, blind fish, 112.

America, North, productions allied to
those of Europe, 333.

■ . , boulders and glaciers of,

335.

■ , South, no modern formations

on west coast, 272.
Ammonites, sudden extinction of, 297.
Anagallis, sterility of, 236.
Analogy of variations, 127.
Ancylus, 345.

Andaman Islands inhabited by a toad,
350.

Animals, not domesticated from being
variable, 13.

, domestic, descended from seve-
ral stocks, 14.

, , acclimatisation of, 112.

of Australia, 90.

with thicker fur in cold climates,

107.

Animals, blind, in caves, 110.

, extinct, of Australia, 310.

Anomma, 232.

Antarctic islands, ancient flora of,
355.

Antechinus, 373.

Ants attending aphides, 207.

, slave-making instinct, 217.

, neuters, structure of, 230.

Apes, not having acquired intellectual

powers, 181.
Aphides, attended by ants, 207.
Aphis, development of, 390.
Apteryx, 140.
Arab horses, 26.
Aralo-Caspian Sea, 311.
Archeopteryx, 284.
Archiac, M. de, on the succession of

species, 299.
Artichoke, Jerusalem, 114.
Ascension, plants of, 347.
Asclepias, pollen of, 151.
Asparagus, 325.

Aspicarpa, 367. •
Asses, striped, 127.

, improved by selection, 30.

Ateuchus, 109.

Aucapitaine, on land-shells, 353.
Audubon, on habits of frigate-bird,
142.

——, on variation in birds' nests,
208.

■——, on heron eating seeds, 346.
Australia, animals of, 90.

, dogs of, 211.

■ , extinct animals of, 310.

, European plants in, 337.

, glaciers of, 335.

Azara, on flies destroying cattle, M.
Azores, flora of, 328.

B.

Babington, Mr., on British plants, 37.
Baer, Von, standard of Highness, 97.

, comparison of bee and fish

308.

Baer, Von, embryonic similarity of

the Vertebrate, 387.
Baker, Sir S., on the giraffe, 178.
Balancement of growth, 117.
Baleen, 182.
Barberry, flowers of, 77.
Barrande, M., on Silurian colonies,

291.

t , on the succession of species,

299.

—, on parallelism of palseozoic

formations, Mr. , on affinities of ancient species,

302.

Barriers, importance of, 317.

Bates, Mr., on mimetic butterflies,

375,376.
Batrachians on islands, 350.
Bats, how structure acquired, 140.

, distribution of, 351.

Bear, catching water-insects, 141.
Beauty, how acquired, 159, 414.
Bee, sting of, 163.

, queen, killing rivals, 164.

, Australian, extermination of,

59.

Bees fertilising flowers, 57.

, hive, not sucking the red clover,

75.

——, Ligurian, 75.

, hive, cell-making instinct, 220.

, variation in habits, 208.

, parasitic, 216.

, humble, cells of, 220.

Beetles, wingless, in Madeira, 109.

with deficient tarsi, 109.

Bentham, Mr., on British plants, 37.

, on classification, 369.

Berkeley, Mr., on seeds in salt water,
324.

Bermuda, birds of, 348.

Birds acquiring fear, 208.

■, beauty of, 161.

annually cross the Atlantic, 329.

, colour of, on continents, 107.

, footsteps, and remains of, in

secondary rocks, 284.

, fossil, in caves of Brazil, 310.

——, of Madeira, Bermuda, and Ga-
lapagos, 348, 349.

, song of males, 70.

transporting seeds, 328.

, waders, 345.

, wingless, 108, 140.

Bizcacha, 318.

, affinities of, 379.

Bladder for swimming, in fish, 147.
Blindness of cave animals, 110.
Blyth, Mr., on distinctness of Indian

cattle, 14.

, on striped hemionus, 128.

, on crossed geese, Mo.

Borrow, Mr., on the Spanish pointer,

26.

Bory St.Vincent, on Batrachians, 350.
Bosquet, M., on fossil Chthamalus,
284.

Boulders, erratic, on the Azores, 328.
Branchise, 148, 149.

of crustaceans, 152.

Braun, Prof., on the seeds of Kuma-

riaceas, 174.
Brent, Mr., on house-tumblers, 210.
Britain, mammals of, 352.
Broca, Prof., on Natural Selection,

170.

Bronn, Prof., on duration of specific
forms, 275.

, various objections by, 170.

Brown, Robert, on classification, 366.

, Se'quard, on inherited mutila-
tions, 108.

Busk, Mr., on the Polyzoa, 193.

Butterflies, mimetic, 375, 376.

Buzareingues, on sterility of varieties,
258.

a

Cabbage, varieties of, crossed, 78.
Calceolaria, 239.

Canary-birds, sterility of hybrids,
240.

Cape de Verde islands, productions of,
354.

, plants of, on mountains, 337.

Cape of Good Hope, plants of, 101,
347.

Carpenter, Dr., on foraminifera, 308.

Carthamus, 173.

Catasetum, 155, 372.

Cats, with blue eyes, deaf, 9.

, variation in habits of, 209.

curling tail when going to

spring, 162.
Cattle destroying fir-trees, M. destroyed by flies in Paraguay,

56.

Cattle, breeds of, locally extinct, 86.

, fertility of Indian and European

breeds, 241.

, Indian, 14, 241.

Cave, inhabitants of, blind, 110.
Cecidomyia, 387.

Celts, proving antiquity of man, 13.
Centres of creation, 320.
Cephalopoda;, structure of eyes, 151.

, development of, 390.

Cercopithecus, tail of, 189.

Ceroxylus laceratus, 182.

Cervulus, Mo.

Cetacea, teeth and hair, 115.

, development of the whalebone,

182.
Cetaceans, 182.
Ceylon, plants of, 338.
Chalk formation, 297.
Characters, divergence of, 86.
—, sexual, variable, 119, 123.

, adaptive or analogical, 373.

Charlock, 59.

Checks to increase, 53.

, mutual, 55.

Chelse of Crustaceans, 193.
Chickens, instinctive tameness of, 211.
Chironomus, its asexual reproduction,

387.

Chthamalinse, 271.

Chthamalus, cretacean species of, 284.

Circumstances favourable to selection

of domestic products, 29.

to natural selection, 80.

Cirripedes capable of crossing, 79.

, carapace aborted, 118.

, their ovigerous frena, 148.

, fossil, 284.

, larvse of, 389.

Claparede, Prof., on the hair-claspers

of the Acaridse, 153.
Clarke, Rev. W. B., on old glaciers in

Australia, 335.
Classification, 363.

Clift, Mr., on the succession of types,
310.

Climate, effects of, in checking in-
crease of beings, M.

, adaptation of, to organisms,

112.

Climbing plants, 147.

, development of, 96.

Clover visited by bees, 75:
Cobites, intestine of, 147.

Cockroach, 59.

Collections, palseontologies!, poor,
270.

Colour, influenced by climate, 107.

, in relation to attacks by flies,

159.

Columba livia, parent of domestic
pigeons, 17.

Colymbetes, 345.

Compensation of growth, 117.

Composite, flowers and seeds of, 116.

, outer and inner florets of, 173.

, male flowers of, 398.

Conclusion, general, 421.

Conditions, slight changes in, favour-
able to fertility, 251.

Convergence of genera, 100.

Coot, 142.

Cope, Prof., on the acceleration or
retardation of the period of repro-
duction, 149.

Coral-islands, seeds drifted to, 326.

reefs, indicating movements of

earth, 326.

Corfl-crake, 143.

Correlated variation in domestic pro-
ductions, 9.
Coryanthes, 154.
Creation, single centres of, 320.
Crinum, 238.

Croll, Mr., on subaerial denudation,
267, 269.

——, on the age of our oldest form-
ations, 286.

, on alternate Glacial periods in

the North and South, 336.

Crosses, reciprocal, 244.

Crossing of domestic animals, import-
ance in altering breeds, 15.

, advantages of, 76, 77.

, unfavourable to selection, 80.

Criiger, Dr., on Coryanthes, 154.

Crustacea of New Zealand, 338.

Crustacean, blind, 110.

— air-breathers, 152.

Crustaceans, their chelse, 193.

Cryptocerus, 231.

Ctenomys, blind, 110.

Cuckoo, instinct of, 205, 212.

Cunningham, Mr., on the flight of
the logger-headed duck, 108.

Currants, grafts of, 246.

Currents of sea, rate of, 325.

Cuvier,on conditions of existence, 205.
Cuvier, on fossil monkeys, 283, 284.

, Fred., on instinct, 205.

Cyclostoma, resisting salt water, 353.

D.

Dana, Prof., on blind cave-animals, 111.

, on relations of crustaceans of

Japan, 334.

, on crustaceans of New Zea-
land, 338.

Dawson, Dr., on eozoon, 287.

De Candolle, Aug. Pyr., on struggle
for existence, 49.

, on umbelliferse, 116.

, on general affinities, 379.

De Candolle, Alph., on the variability
of oaks, 40.

, on low plants, widely dispersed,

359.

, on widely-ranging plants being

variable, M.

, on naturalisation, 89.

, on winged seeds, 117.

, on Alpine species suddenly be-
coming rare, 135.

, on distribution of plants with

large seeds, 326.

, on vegetation of Australia, 340.

-, on fresh-water plants, 345.

, on insular plants, 347.

Degradation of rocks, 266.

Denudation, rate of, 268.

. of oldest rocks, 287.

of granitic areas, 274.

Development of ancient forms, 307.

Devonian system, 305.

Dianthus, fertility of crosses, 243.

Dimorphism in plants, 35, 252.

Dirt on feet of birds, 328.

Dispersal, means of, 323.

during Glacial period, 330.

Distribution, geographical, 316.

, means of, 323.

Disuse, effects of, under nature, 108.

Divergence of character, 86.

Diversification of means for same
general purpose, 153.

Division, physiological, of labour, 89.

Dog, resemblance of jaw to that of
the Thylacinus, 374.

Dogs, hairless, with imperfect teeth, 9.

descended from several wild

stocks. 15.

, domestic instincts of, 210.

Dogs, inherited civilisation of, 210.

, fertility of breeds together, 241.

, of crosses, 256.

, proportions of body in different

breeds, when young, 392.

Domestication, variation under, 5.

Double flowers, 230.

Downing, Mr., on fruit-trees in Ame-
rica, 66.

Dragon-flies, intestines of, 147.

Drift-timber, 326.

Driver-ant, 232.

Drones killed by other bees, 164.
Duck, domestic, wings of, reduced, 3.

, beak of, 183.

, logger-headed, 140.

Duckweed, 344.
Dugong, affinities of, 365.
Dung-beetles with deficient tarsi, 108.
Dytiscus, 345.

X.

Earl, Mr. W., on the Malay Archipe-
lago, 351.

Ears, drooping, in domestic animals, 8.

, rudimentary, 400.

Earth, seeds in roots of trees, 326.

charged with seeds, 328.

Echinodermata, their pedicellaria?,
191.

Eciton, 230.

Economy of organisation, 117.
Edentata, teeth and hair, 115.

, fossil species of, 417.

Edwards, Milne, on physiological

division of labour, 89.

, on gradations of structure. 156.

, on embrvological characters,

368.

Eggs, young birds escaping from, 68.
Egypt, productions of, not modified-
169.

Electric organs, 150.
Elephant, rate of increase, 51.

, of Glacial period, 113.

Embryology, 386.
Eozoon Canadense, 287.
Epilepsy inherited, 108.
Existence, struggle for, 48.

, conditions of, 167.

Extinction, as bearing on natural
selection, M.

of domestic varieties, 93.

, 293.

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