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INDEX.
Aberrant groups
Abyssinia, plants of
Acclimatisation
Adoxa
Affinities of extinct species
--of organic beings
Agassiz on Amblyopsis
--on groups of species suddenly appearing
--on prophetic forms
--on embryological succession
--on the Glacial period
--on embryological characters
--on the latest tertiary forms
--on parallelism of embryological development and geological succession
--Alex., on pedicellariae
Algae of New Zealand
Alligators, males, fighting
Alternate generations
Amblyopsis, blind fish
America, North, productions allied to those of Europe
--boulders and glaciers of
--South, no modern formations on west coast
Ammonites, sudden extinction of
Anagallis, sterility of
Analogy of variations
Andaman Islands inhabited by a toad
Ancylus
Animals, not domesticated from being variable
--domestic; descended from several stocks
--acclimatisation of
Animals of Australia
--with thicker fur in cold climates
--blind, in caves
--extinct, of Australia
Anomma
Antarctic islands, ancient flora of
Antechinus
Ants attending aphides
--slave-making instinct
--neuters, structure of
Apes, not having acquired intellectual powers
Aphides attended by ants
Aphis, development of
Apteryx
Arab horses
Aralo-Caspian Sea
Archeopteryx
Archiac, M. de, on the succession of species
Artichoke, Jerusalem
Ascension, plants of
Asclepias, pollen of
Asparagus
Aspicarpa
Asses, striped
--improved by selection
Ateuchus
Aucapitaine, on land-shells
Audubon, on habits of frigate-bird
--on variation in birds' nests
--on heron eating seeds
Australia, animals of
--dogs of
--extinct animals of
--European plants in
--glaciers of
Azara, on flies destroying cattle
Azores, flora of
Babington, Mr., on British plants
Baer, Von, standard of Highness
--comparison of bee and fish
--embryonic similarity of the Vertebrata
Baker, Sir S., on the giraffe
Balancement of growth
Baleen
Barberry, flowers of
Barrande, M., on Silurian colonies
--on the succession of species
--on parallelism of palaeozoic formations
--on affinities of ancient species
Barriers, importance of
Bates, Mr., on mimetic butterflies
Batrachians on islands
Bats, how structure acquired
--distribution of
Bear, catching water-insects
Beauty, how acquired
Bee, sting of
--queen, killing rivals
--Australian, extermination of
Bees, fertilizing flowers
--hive, not sucking the red clover
--hive, cell-making instinct
--Ligurian
--variation in habits
Bees, parasitic
--humble, cells of
Beetles, wingless, in Madeira
--with deficient tarsi
Bentham, Mr., on British plants
--on classification
Berkeley, Mr., on seeds in salt-water
Bermuda, birds of
Birds acquiring fear
--beauty of
--annually cross the Atlantic
--colour of, on continents
--footsteps, and remains of, in secondary rocks
--fossil, in caves of Brazil
--of Madeira, Bermuda, and Galapagos
--song of males
--transporting seeds
--waders
--wingless
Bizcacha, affinities of
Bladder for swimming, in fish
Blindness of cave animals
Blyth, Mr., on distinctness of Indian cattle
--on striped Hemionus
--on crossed geese
Borrow, Mr., on the Spanish pointer
Bory St. Vincent, on Batrachians
Bosquet, M., on fossil Chthamalus
Boulders, erratic, on the Azores
Branchiae
--of crustaceans
Braun, Prof., on the seeds of Fumariaceae
Brent, Mr., on house-tumblers
Britain, mammals of
Broca, Prof., on Natural Selection
Bronn, Prof., on duration of specific forms
--various objections by
Brown, Robert, on classification
Brown-Sequard, on inherited mutilations
Busk, Mr., on the Polyzoa
Butterflies, mimetic
Buzareingues, on sterility of varieties
Cabbage, varieties of, crossed
Calceolaria
Canary-birds, sterility of hybrids
Cape de Verde Islands, productions of
--plants of, on mountains
Cape of Good Hope, plants of
Carpenter, Dr., on foraminifera
Carthemus
Catasetum
Cats, with blue eyes, deaf
--variation in habits of
--curling tail when going to spring
Cattle destroying fir-trees
--destroyed by flies in Paraguay
--breeds of, locally extinct
--fertility of Indian and European breeds
--Indian
Cave, inhabitants of, blind
Cecidomyia
Celts, proving antiquity of man
Centres of creation
Cephalopodae, structures of eyes
--development of
Cercopithecus, tail of
Ceroxylus laceratus
Cervulus
Cetacea, teeth and hair
--development of the whalebone
Cetaceans
Ceylon, plants of
Chalk formation
Characters, divergence of
--sexual, variable
--adaptive or analogical
Charlock
Checks to increase
--mutual
Chelae of Crustaceans
Chickens, instinctive tameness of
Chironomus, its asexual reproduction
Chthamalinae
Chthamalus, cretacean species of
Circumstances favourable to selection of domestic products
--to natural selection
Cirripedes capable of crossing
--carapace aborted
--their ovigerous frena
--fossil
--larvae of
Claparede, Prof., on the hair-claspers of the Acaridae
Clarke, Rev. W.B., on old glaciers in Australia
Classification
Clift, Mr., on the succession of types
Climate, effects of, in checking increase of beings
--adaptation of, to organisms
Climbing plants
--development of
Clover visited by bees
Cobites, intestine of
Cockroach
Collections, palaeontological, poor
Colour, influenced by climate
--in relation to attacks by flies
Columba livia, parent of domestic pigeons
Colymbetes
Compensation of growth
Compositae, flowers and seeds of
--outer and inner florets of
--male flowers of
Conclusion, general
Conditions, slight changes in, favourable to fertility
Convergence of genera
Coot
Cope, Prof., on the acceleration or retardation of the period of
reproduction
Coral-islands, seeds drifted to
--reefs, indicating movements of earth
Corn-crake
Correlated variation in domestic productions
Coryanthes
Creation, single centres of
Crinum
Croll, Mr., on subaerial denudation
--on the age of our oldest formations
--on alternate Glacial periods in the North and South
Crosses, reciprocal
Crossing of domestic animals, importance in altering breeds
--advantages of
--unfavourable to selection
Cruger, Dr., on Coryanthes
Crustacea of New Zealand
Crustacean, blind
air-breathers
Crustaceans, their chelae
Cryptocerus
Ctenomys, blind
Cuckoo, instinct of
Cunningham, Mr., on the flight of the logger-headed duck
Currants, grafts of
Currents of sea, rate of
Cuvier on conditions of existence
--on fossil monkeys
Cuvier, Fred., on instinct
Cyclostoma, resisting salt water
Dana, Prof., on blind cave-animals
--on relations of crustaceans of Japan
--on crustaceans of New Zealand
Dawson, Dr., on eozoon
De Candolle, Aug. Pyr., on struggle for existence
--on umbelliferae
--on general affinities
De Candolle, Alph., on the variability of oaks
--on low plants, widely dispersed
--on widely-ranging plants being variable
--on naturalisation
--on winged seeds
--on Alpine species suddenly becoming rare
--on distribution of plants with large seeds
--on vegetation of Australia
--on fresh-water plants
--on insular plants
Degradation of rocks
Denudation, rate of
--of oldest rocks
--of granite areas
Development of ancient forms
Devonian system
Dianthus, fertility of crosses
Dimorphism in plants
Dirt on feet of birds
Dispersal, means of
--during Glacial period
Distribution, geographical
--means of
Disuse, effect of, under nature
Diversification of means for same general purpose
Division, physiological, of labour
Divergence of character
Dog, resemblance of jaw to that of the Thylacinus
Dogs, hairless, with imperfect teeth
--descended from several wild stocks
--domestic instincts of
--inherited civilisation of
--fertility of breeds together
--of crosses
--proportions of body in different breeds, when young
Domestication, variation under
Double flowers
Downing, Mr., on fruit-trees in America
Dragon-flies, intestines of
Drift-timber
Driver-ant
Drones killed by other bees
Duck, domestic, wings of, reduced
--beak of
--logger-headed
Duckweed
Dugong, affinities of
Dung-beetles with deficient tarsi
Dyticus
Earl, Mr., W., on the Malay Archipelago
Ears, drooping, in domestic animals
--rudimentary
Earth, seeds in roots of trees
--charged with seeds
Echinodermata, their pedicellariae
Eciton
Economy of organisation
Edentata, teeth and hair
--fossil species of
Edwards, Milne, on physiological division of labour
--on gradations of structure
Edwards, on embryological characters
Eggs, young birds escaping from
Egypt, productions of, not modified
Electric organs
Elephant, rate of increase
--of Glacial period
Embryology
Eozoon Canadense
Epilipsy inherited
Existence, struggle for
--condition of
Extinction, as bearing on natural selection
--of domestic varieties
Eye, structure of
--correction for aberration
Eyes, reduced, in moles
Fabre, M., on hymenoptera fighting
--on parasitic sphex
--on Sitaris
Falconer, Dr., on naturalisation of plants in India
--on elephants and mastodons
--and Cautley on mammals of sub-Himalayan beds
Falkland Islands, wolf of
Faults
Faunas, marine
Fear, instinctive, in birds
Feet of birds, young molluscs adhering to
Fertilisation variously effected
Fertility of hybrids
--from slight changes in conditions
--of crossed varieties
Fir-trees destroyed by cattle
--pollen of
Fish, flying
--teleostean, sudden appearance of
--eating seeds
--fresh-water, distribution of
Fishes, ganoid, now confined to fresh water
--ganoid, living in fresh water
--electric organs of
--of southern hemisphere
Flight, powers of, how acquired
Flint-tools, proving antiquity of man
Flower, Prof., on the larynx
--on Halitherium
--on the resemblance between the jaws of the dog and Thylacinus
--on the homology of the feet of certain marsupials
Flowers, structure of
--in relation to crossing
--of composite and umbelliferae
--beauty of
--double
Flysch formation, destitute of organic remains
Forbes, Mr. D., on glacial action in the Andes
Forbes, E., on colours of shells
--on abrupt range of shells in depth
--on poorness of palaeontological collections
--on continuous succession of genera
--on continental extensions
--on distribution during Glacial period
--on parallelism in time and space
Forests, changes in, in America
Formation, Devonian
--Cambrian
--intermittent
--thickness of, in Britain
Formica
--rufescens
--sanguinea
--flava, neuter of
Forms, lowly organised, long enduring
Frena, ovigerous, of cirripedes
Fresh-water productions, dispersal of
Fries on species in large genera being closely allied to other species
Frigate-bird
Frogs on islands
Fruit-trees, gradual improvement of
--in United States
--varieties of, acclimatised in United States
Fuci, crossed
Fur, thicker in cold climates
Furze
Galapagos Archipelago, birds of
--productions of
Galaxias, its wide range
Galeopithecus
Game, increase of, checked by vermin
Gartner on sterility of hybrids
--on reciprocal crosses
--on crossed maize and verbascum
--on comparison of hybrids and mongrels
Gaudry, Prof., on intermediate genera of fossil mammals in Attica
Geese, fertility when crossed
--upland
Geikie, Mr., on subaerial denudation
Genealogy, important in classification
Generations, alternate
Geoffroy St. Hilaire, on balancement
--on homologous organs
Geoffroy St. Hilaire, Isidore, on variability of repeated parts
--on correlation, in monstrosities
--on correlation
--on variable parts being often monstrous
Geographical distribution
Geography, ancient
Geology, future progress of
--imperfection of the record
Gervais, Prof., on Typotherium
Giraffe, tail of
--structure of
Glacial period
--affecting the North and South
Glands, mammary
Gmelin, on distribution
Godwin-Austin, Mr., on the Malay Archipelago
Goethe, on compensation of growth
Gomphia
Gooseberry, grafts of
Gould, Dr. Aug. A., on land-shells
Gould, Mr., on colours of birds
--on instincts of cuckoo
--on distribution of genera of birds
Gourds, crossed
Graba, on the Uria lacrymans
Grafting, capacity of
Granite, areas of denuded
Grasses, varieties of
Gray, Dr. Asa, on the variability of oaks
--on man not causing variability
--on sexes of the holly
--on trees of the United States
--on naturalised plants in the United States
--on aestivation
--on rarity of intermediate varieties
--on Alpine plants
Gray, Dr. J.E., on striped mule
Grebe
Grimm, on asexual reproduction
Groups, aberrant
Grouse, colours of
--red, a doubtful species
Growth, compensation of
Gunther, Dr., on flat-fish
--on prehensile tails
--on the fishes of Panama
--on the range of fresh-water fishes
--on the limbs of Lepidosiren
Haast, Dr., on glaciers of New Zealand
Habit, effect of, under domestication
--effect of, under nature
--diversified, of same species
Hackel, Prof., on classification and the lines of descent
Hair and teeth, correlated
Halitherium
Harcourt, Mr. E.V., on the birds of Madeira
Hartung, M., on boulders in the Azores
Hazel-nuts
Hearne, on habits of bears
Heath, changes in vegetation
Hector, Dr., on glaciers of New Zealand
Heer, Oswald, on ancient cultivated plants
--on plants of Madeira
Helianthemum
Helix pomatia, resisting salt water
Helmholtz, M., on the imperfection of the human eye
Helosciadium
Hemionus, striped
Hensen, Dr., on the eyes of Cephalopods
Herbert, W., on struggle for existence
--on sterility of hybrids
Hermaphrodites crossing
Heron eating seed
Heron, Sir R., on peacocks
Heusinger, on white animals poisoned by certain plants
Hewitt, Mr., on sterility of first crosses
Hildebrand, Prof., on the self-sterility of Corydalis
Hilgendorf, on intermediate varieties
Himalaya, glaciers of
--plants of
Hippeastrum
Hippocampus
Hofmeister, Prof., on the movements of plants
Holly-trees, sexes of
Hooker, Dr., on trees of New Zealand
--on acclimatisation of Himalayan trees
--on flowers of umbelliferae
--on the position of ovules
--on glaciers of Himalaya
--on algae of New Zealand
--on vegetation at the base of the Himalaya
--on plants of Tierra del Fuego
--on Australian plants
--on relations of flora of America
--on flora of the Antarctic lands
--on the plants of the Galapagos
--on glaciers of the Lebanon
--on man not causing variability
--on plants of mountains of Fernando Po
Hooks on palms
--on seeds, on islands
Hopkins, Mr., on denudation
Hornbill, remarkable instinct of
Horns, rudimentary
Horse, fossil in La Plata
--proportions of, when young
Horses destroyed by flies in Paraguay
--striped
Horticulturists, selection applied by
Huber on cells of bees
Huber, P., on reason blended with instinct
--on habitual nature of instincts
--on slave-making ants
--on Melipona domestica
Hudson, Mr., on the Ground-woodpecker of La Plata
--on the Molothrus
Humble-bees, cells of
Hunter, J., on secondary sexual characters
Hutton, Captain, on crossed geese
Huxley, Prof., on structure of hermaphrodites
--on the affinities of the Sirenia
--on forms connecting birds and reptiles
--on homologous organs
--on the development of aphis
Hybrids and mongrels compared
Hybridism
Hydra, structure of
Hymenoptera, fighting
Hymenopterous insect, diving
Hyoseris
Ibla
Icebergs transporting seeds
Increase, rate of
Individuals, numbers favourable to selection
--many, whether simultaneously created
Inheritance, laws of
--at corresponding ages
Insects, colour of, fitted for their stations
--sea-side, colours of
--blind, in caves
--luminous
--their resemblance to certain objects
--neuter
Instinct, not varying simultaneously with structure
Instincts, domestic
Intercrossing, advantages of
Islands, oceanic
Isolation favourable to selection
Japan, productions of
Java, plants of
Jones, Mr. J.M., on the birds of Bermuda
Jordain, M., on the eye-spots of star fishes
Jukes, Prof., on subaerial denudation
Jussieu on classification
Kentucky, caves of
Kerguelen-land, flora of
Kidney-bean, acclimatisation of
Kidneys of birds
Kirby, on tarsi deficient in beetles
Knight, Andrew, on cause of variation
Kolreuter, on intercrossing
--on the barberry
--on sterility of hybrids
--on reciprocal crosses
--on crossed varieties of nicotiana
--on crossing male and hermaphrodite flowers
Lamarck, on adaptive characters
Lancelet, eyes of
Landois, on the development of the wings of insects
Land-shells, distribution of
--of Madeira, naturalised
--resisting salt water
Languages, classification of
Lankester, Mr. E. Ray, on longevity
--on homologies
Lapse, great, of time
Larvae
Laurel, nectar secreted by the leaves
Laurentian formation
Laws of variation
Leech, varieties of
Leguminosae, nectar secreted by glands
Leibnitz, attack on Newton
Lepidosiren, limbs in a nascent condition
Lewes, Mr. G.H., on species not having changed in Egypt
--on the Salamandra atra
--on many forms of life having been at first evolved
Life, struggle for
Lingula, Silurian
Linnaeus, aphorism of
Lion, mane of
--young of, striped
Lobelia fulgens
Lobelia, sterility of crosses
Lockwood, Mr., on the ova of the Hippocampus
Locusts transporting seeds
Logan, Sir W., on Laurentian formation
Lowe, Rev. R.T., on locusts visiting Madeira
Lowness, of structure connected with variability
--related to wide distribution
Lubbock, Sir J., on the nerves of coccus
--on secondary sexual characters
--on a diving hymenopterous insect
--on affinities
--on metamorphoses
Lucas, Dr. P., on inheritance
--on resemblance of child to parent
Lund and Clausen, on fossils of Brazil
Lyell, Sir C., on the struggle for existence
--on modern changes of the earth
--on terrestrial animals not having been developed on islands
--on a carboniferous land-shell
--on strata beneath Silurian system
--on the imperfection of the geological record
--on the appearance of species
--on Barrande's colonies
--on tertiary formations of Europe and North America
--on parallelism of tertiary formations
--on transport of seeds by icebergs
--on great alternations of climate
--on the distribution of fresh-water shells
--on land-shells of Madeira
Lyell and Dawson, on fossilized trees in Nova Scotia
Lythrum salicaria, trimorphic
Macleay, on analogical characters
Macrauchenia
McDonnell, Dr., on electric organs
Madeira, plants of
--beetles of, wingless
--fossil land-shells of
--birds of
Magpie tame in Norway
Males, fighting
Maize, crossed
Malay Archipelago, compared with Europe
--mammals of
Malm, on flat-fish
Malpighiaceae, small imperfect flowers of
Mammae, their development
--rudimentary
Mammals, fossil, in secondary formation
--insular
Man, origin of
Manatee, rudimentary nails of
Marsupials, fossil species of
Marsupials of Australia, structure of their feet
Martens, M., experiment on seeds
Martin, Mr. W.C., on striped mules
Masters, Dr., on Saponaria
Matteucci, on the electric organs of rays
Matthiola, reciprocal crosses of
Maurandia
Means of dispersal
Melipona domestica
Merrill, Dr., on the American cuckoo
Metamorphism of oldest rocks
Mice destroying bees
--acclimatisation of
--tails of
Miller, Prof., on the cells of bees
Mirabilis, crosses of
Missel-thrush
Mistletoe, complex relations of
Mivart, Mr., on the relation of hair and teeth
--on the eyes of cephalopods
--various objections to Natural Selection
--on abrupt modifications
--on the resemblance of the mouse and antechinus
Mocking-thrush of the Galapagos
Modification of species, not abrupt
Moles, blind
Molothrus, habits of
Mongrels, fertility and sterility of
--and hybrids compared
Monkeys, fossil
Monachanthus
Mons, Van, on the origin of fruit-trees
Monstrosities
Moquin-Tandon, on sea-side plants
Morphology
Morren, on the leaves of Oxalis
Moths, hybrid
Mozart, musical powers of
Mud, seeds in
Mules, striped
Muller, Adolph, on the instincts of the cuckoo
Muller, Dr. Ferdinand, on Alpine Australian plants
Muller, Fritz, on dimorphic crustaceans
--on the lancelet
--on air-breathing crustaceans
--on the self-sterility of orchids
--on embryology in relation to classification
--on the metamorphoses of crustaceans
--on terrestrial and fresh-water organisms not undergoing any metamorphosis
--on climbing plants
Multiplication of species not indefinite
Murchison, Sir, R., on the formations of Russia
--on azoic formations
--on extinction
Murie, Dr., on the modification of the skull in old age
Murray, Mr. A., on cave-insects
Mustela vison
Myanthus
Myrmecocystus
Myrmica, eyes of
Nageli, on morphological characters
Nails, rudimentary
Nathusius, Von, on pigs
Natural history, future progress of
--selection
--system
Naturalisation of forms distinct from the indigenous species
--in New Zealand
Naudin, on analagous variations in gourds
--on hybrid gourds
--on reversion
Nautilus, Silurian
Nectar of plants
Nectaries, how formed
Nelumbium luteum
Nests, variation in
Neuter insects
New Zealand, productions of, not perfect
--naturalised products of
--fossil birds of
--glaciers of
--crustaceans of
--algae of
--number of plants of
--flora of
Newman, Col., on humble-bees
Newton, Prof., on earth attached to a partridge's foot
Newton, Sir I., attacked for irreligion
Nicotiana, crossed varieties of
--certain species very sterile
Nitsche, Dr., on the Polyzoa
Noble, Mr., on fertility of Rhododendron
Nodules, phosphatic, in azoic rocks
Oak, varieties of
Onites apelles
Orchids, fertilisation of
--the development of their flowers
--forms of
Orchis, pollen of
Organisation, tendency to advance
Organs of extreme perfection
--electric, of fishes
--of little importance
--homologous
--rudiments of, and nascent
Ornithorhynchus, mammae of
Ostrich not capable of flight
--habit of laying eggs together
--American, two species of
Otter, habits of, how acquired
Ouzel, water
Owen, Prof., on birds not flying
--on vegetative repetition
--on variability of unusually developed parts
--on the eyes of fishes
--on the swim-bladder of fishes
--on fossil horse of La Plata
--on generalised form
--on relation of ruminants and pachyderms
--on fossil birds of New Zealand
--on succession of types
--on affinities of the dugong
--on homologous organs
--on the metamorphosis of cephalopods
Pacific Ocean, faunas of
Pacini, on electric organs
Paley, on no organ formed to give pain
Pallas, on the fertility of the domesticated descendants of wild stocks
Palm with hooks
Papaver bracteatum
Paraguay, cattle destroyed by flies
Parasites
Partridge, with ball of dirt attached to foot
Parts greatly developed, variable
Parus major
Passiflora
Peaches in United States
Pear, grafts of
Pedicellariae
Pelargonium, flowers of
--sterility of
Peloria
Pelvis of women
Period, glacial
Petrels, habits of
Phasianus, fertility of hybrids
Pheasant, young, wild
Pictet, Prof., on groups of species suddenly appearing
--on rate of organic change
--on continuous succession of genera
--on close alliance of fossils in consecutive formations
--on change in latest tertiary forms
--on early transitional links
Pierce, Mr., on varieties of wolves
Pigeons with feathered feet and skin between toes
--breeds described, and origin of
--breeds of, how produced
--tumbler, not being able to get out of egg
--reverting to blue colour
--instinct of tumbling
--young of
Pigs, black, not affected by the paint-root
--modified by want of exercise
Pistil, rudimentary
Plants, poisonous, not affecting certain coloured animals
--selection, applied to
--gradual improvement of
--not improved in barbarous countries
--dimorphic
--destroyed by insects
--in midst of range, have to struggle with other plants
--nectar of
--fleshy, on sea-shores
--climbing
--fresh-water, distribution of
--low in scale, widely distributed
Pleuronectidae, their structure
Plumage, laws of change in sexes of birds
Plums in the United States
Pointer dog, origin of
--habits of
Poison not affecting certain coloured animals
Poison, similar effect of, on animals and plants
Pollen of fir-trees
--transported by various means
Pollinia, their development
Polyzoa, their avicularia
Poole, Col., on striped hemionus
Potemogeton
Pouchet, on the colours of flat-fish
Prestwich, Mr., on English and French eocene formations
Proctotrupes
Proteolepas
Proteus
Psychology, future progress of
Pyrgoma, found in the chalk
Quagga, striped
Quatrefages, M., on hybrid moths
Quercus, variability of
Quince, grafts of
Rabbits, disposition of young
Races, domestic, characters of
Race-horses, Arab
--English
Radcliffe, Dr., the electrical organs of the torpedo
Ramond, on plants of Pyrenees
Ramsay, Prof., on subaerial denudation
--on thickness of the British formations
--on faults
Ramsay, Mr., on instincts of cuckoo
Ratio of increase
Rats, supplanting each other
--acclimatisation of
--blind, in cave
Rattle-snake
Reason and instinct
Recapitulation, general
Reciprocity of crosses
Record, geological, imperfect
Rengger, on flies destroying cattle
Reproduction, rate of
Resemblance, protective, of insects
--to parents in mongrels and hybrids
Reversion, law of inheritance
--in pigeons, to blue colour
Rhododendron, sterility of
Richard, Prof., on Aspicarpa
Richardson, Sir J., on structure of squirrels
--on fishes of the southern hemisphere
Robinia, grafts of
Rodents, blind
Rogers, Prof., Map of N. America
Rudimentary organs
Rudiments important for classification
Rutimeyer, on Indian cattle
Sageret, on grafts
Salamandra atra
Saliva used in nests
Salmons, males fighting, and hooked jaws of
Salt-water, how far injurious to seeds
--not destructive to land-shells
Salter, Mr., on early death of hybrid embryos
Salvin, Mr., on the beaks of ducks
Saurophagus sulphuratus
Schacht, Prof., on Phyllotaxy
Schiodte, on blind insects
--on flat-fish
Schlegel, on snakes
Schobl, Dr., on the ears of mice
Scott, Mr. J., on the self-sterility of orchids
--on the crossing of varieties of verbascum
Sea-water, how far injurious to seeds
--not destructive to land-shells
Sebright, Sir J., on crossed animals
Sedgwick, Prof., on groups of species suddenly appearing
Seedlings destroyed by insects
Seeds, nutriment in
--winged
--means of dissemination
--power of resisting salt-water
--in crops and intestines of birds
--eaten by fish
--in mud
--hooked, on islands
Selection of domestic products
--principle not of recent origin
--unconscious
--natural
--sexual
--objections to term
--natural, has not induced sterility
Sexes, relations of
Sexual characters variable
--selection
Sheep, Merino, their selection
--two sub-breeds, unintentionally produced
--mountain, varieties of
Shells, colours of, littoral
--hinges of
--seldom embedded
Shells, fresh-water, long retain the same forms
--fresh-water, dispersal of
--of Madeira
--land, distribution of
--land, resisting salt water
Shrew-mouse
Silene, infertility of crosses
Silliman, Prof., on blind rat
Sirenia, their affinities
Sitaris, metamorphosis of
Skulls of young mammals
Slave-making instinct
Smith, Col. Hamilton, on striped horses
Smith, Dr., on the Polyzoa
Smith, Mr. Fred., on slave-making ants
--on neuter ants
Snake with tooth for cutting through egg-shell
Somerville, Lord, on selection of sheep
Sorbus, grafts of
Sorex
Spaniel, King Charles' breed
Specialisation of organs
Species, polymorphic
--dominant
--common, variable
--in large genera variable
--groups of, suddenly appearing
--beneath Silurian formations
--successively appearing
--changing simultaneously throughout the world
Spencer, Lord, on increase in size of cattle
Spencer, Mr. Herbert, on the first steps in differentiation
--on the tendency to an equilibrium in all forces
Sphex, parasitic
Spiders, development of
Sports in plants
Sprengel, C.C., on crossing
--on ray-florets
Squalodon
Squirrels, gradations in structure
Staffordshire, heath, changes in
Stag-beetles, fighting
Star fishes, eyes of
--their pedicellariae
Sterility from changed conditions of life
--of hybrids
--laws of
--causes of
--from unfavourable conditions
--not induced through natural selection
St. Helena, productions of
St. Hilaire, Aug., on variability of certain plants
--on classification
St. John, Mr., on habits of cats
Sting of bee
Stocks, aboriginal, of domestic animals
Strata, thickness of, in Britain
Stripes on horses
Structure, degrees of utility of
Struggle for existence
Succession, geological
--of types in same areas
Swallow, one species supplanting another
Swaysland, Mr., on earth adhering to the feet of migratory birds
Swifts, nests of
Swim-bladder
Switzerland, lake inhabitants of
System, natural
Tail of giraffe
--of aquatic animals
--prehensile
--rudimentary
Tanais, dimorphic
Tarsi deficient
Tausch, Dr., on umbelliferae
Teeth and hair correlated
--rudimentary, in embryonic calf
Tegetmeier, Mr., on cells of bees
Temminck, on distribution aiding classification
Tendrils, their development
Thompson, Sir W., on the age of the habitable world
--on the consolidation of the crust of the earth
Thouin, on grafts
Thrush, aquatic species of
--mocking, of the Galapagos
--young of, spotted
--nest of
Thuret, M., on crossed fuci
Thwaites, Mr., on acclimatisation
Thylacinus
Tierra del Fuego, dogs of
--plants of
Timber-drift
Time, lapse of
--by itself not causing modification
Titmouse
Toads on islands
Tobacco, crossed varieties of
Tomes, Mr., on the distribution of bats
Transitions in varieties rare
Traquair, Dr., on flat-fish
Trautschold, on intermediate varieties
Trees on islands belong to peculiar orders
--with separated sexes
Trifolium pratense
--incarnatum
Trigonia
Trilobites
--sudden extinction of
Trimen, Mr., on imitating-insects
Trimorphism in plants
Troglodytes
Tuco-tuco, blind
Tumbler pigeons, habits of, hereditary
--young of
Turkey-cock, tuft of hair on breast
Turkey, naked skin on head
--young of, instinctively wild
Turnip and cabbage, analogous variations of
Type, unity of
Types, succession of, in same areas
Typotherium
Udders enlarged by use
--rudimentary
Ulex, young leaves of
Umbelliferae, flowers and seeds of
--outer and inner florets of
Unity of type
Uria lacrymans
Use, effects of
--under domestication
--in a state of nature
Utility, how far important in the construction of each part
Valenciennes, on fresh-water fish
Variability of mongrels and hybrids
Variation, under domestication
--caused by reproductive system being affected by conditions of life
--under nature
--laws of
--correlated
Variations appear at corresponding ages
--analogous in distinct species
Varieties, natural
--struggle between
--domestic, extinction of
--transitional, rarity of
Varieties, when crossed
--fertile
--sterile
--classification of
Verbascum, sterility of
--varieties of, crossed
Verlot, M., on double stocks
Verneuil, M. de, on the succession of species
Vibracula of the Polyzoa
Viola, small imperfect flowers of
--tricolor
Virchow, on the structure of the crystalline lens
Virginia, pigs of
Volcanic islands, denudation of
Vulture, naked skin on head
Wading-birds
Wagner, Dr., on Cecidomyia
Wagner, Moritz, on the importance of isolation
Wallace, Mr., on origin of species
--on the limit of variation under domestication
--on dimorphic lepidoptera
--on races in the Malay Archipelago
--on the improvement of the eye
--on the walking-stick insect
--on laws of geographical distribution
--on the Malay Archipelago
--on mimetic animals
Walsh, Mr. B.D., on phytophagic forms
--on equal variability
Water, fresh, productions of
Water-hen
Waterhouse, Mr., on Australian marsupials
--on greatly developed parts being variable
--on the cells of bees
--on general affinities
Water-ouzel
Watson, Mr. H.C., on range of varieties of British plants
--on acclimatisation
--on flora of Azores
--on rarity of intermediate varieties
--on Alpine plants
--on convergence
--on the indefinite multiplication of species
Weale, Mr., on locusts transporting seeds
Web of feet in water-birds
Weismann, Prof., on the causes of variability
--on rudimentary organs
West Indian islands, mammals of
Westwood, on species in large genera being closely allied to others
--on the tarsi of Engidae
--on the antennae of hymenopterous insects
Whales
Wheat, varieties of
White Mountains, flora of
Whittaker, Mr., on lines of escarpment
Wichura, Max, on hybrids
Wings, reduction of size
--of insects homologous with branchiae
--rudimentary, in insects
Wolf crossed with dog
--of Falkland Isles
Wollaston, Mr., on varieties of insects
--on fossil varieties of shells in Madeira
Wollaston, Mr., on colours of insects on sea-shore
--on wingless beetles
--on rarity of intermediate varieties
--on insular insects
--on land-shells of Madeira naturalised
Wolves, varieties of
Woodcock with earth attached to leg
Woodpecker, habits of
--green colour of
Woodward, Mr., on the duration of specific forms
--on Pyrgoma
--on the continuous succession of genera
--on the succession of types
World, species changing simultaneously throughout
Wright, Mr. Chauncey, on the giraffe
--on abrupt modifications
Wrens, nest of
Wyman, Prof., on correlation of colour and effects of poison
--on the cells of the bee
Youatt, Mr., on selection
--on sub-breeds of sheep
--on rudimentary horns in young cattle
Zanthoxylon
Zebra, stripes on
Zeuglodons
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