Nature Versus Natural Selection: An Essay on Organic EvolutionLondon, 1895 - 591 páginas |
Dentro del libro
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Página 55
... species in the output of life and the consequent destruction which occurs in each generation . Shall we , then , be justified in supposing that the selective power of the destruction is in direct ratio to the output of life ? Mr. 55.
... species in the output of life and the consequent destruction which occurs in each generation . Shall we , then , be justified in supposing that the selective power of the destruction is in direct ratio to the output of life ? Mr. 55.
Página 56
An Essay on Organic Evolution Charles Clement Coe. in direct ratio to the output of life ? Mr. Fiske evidently supposes that it is so , for he says : - " A single cod - fish has been known to lay six million eggs within a year . With the ...
An Essay on Organic Evolution Charles Clement Coe. in direct ratio to the output of life ? Mr. Fiske evidently supposes that it is so , for he says : - " A single cod - fish has been known to lay six million eggs within a year . With the ...
Página 112
... direct action of outward conditions , apart from Natural Selection , produces the very characteristics which aid these organisms in the struggle to overcome the disabilities of their position ; when that has been done it will justify ...
... direct action of outward conditions , apart from Natural Selection , produces the very characteristics which aid these organisms in the struggle to overcome the disabilities of their position ; when that has been done it will justify ...
Página 118
... direct action of the conditions and the destruction of others which are unable to adapt themselves to the same con- ditions ; the fitness of one species to new conditions and the unfitness of another ; -may be taken as vivid ...
... direct action of the conditions and the destruction of others which are unable to adapt themselves to the same con- ditions ; the fitness of one species to new conditions and the unfitness of another ; -may be taken as vivid ...
Página 155
... direct the transmutation of species , must act , if it acts at all , under disabilities which would make all the efforts of Artificial Selection futile , and yet the experiment of Artificial Selection is cited as the most convincing ...
... direct the transmutation of species , must act , if it acts at all , under disabilities which would make all the efforts of Artificial Selection futile , and yet the experiment of Artificial Selection is cited as the most convincing ...
Otras ediciones - Ver todas
Nature Versus Natural Selection: An Essay on Organic Evolution Charles Clement Coe Vista completa - 1895 |
Nature Versus Natural Selection: An Essay on Organic Evolution Charles Clement Coe Vista completa - 1895 |
Nature Versus Natural Selection: An Essay on Organic Evolution Charles Clement Coe Sin vista previa disponible - 2015 |
Términos y frases comunes
action of Natural adapted animals argument Artificial Selection assertion assume attack become believe birds black rat breed brown rat burrow caterpillars cause chance co-operation colour Colours of Animals competition correlated variation Darwin destruction difficulty dogs effect eggs enemies evidence experience extermination external conditions extinction fact favourable variations female fertile fittest geometrical ratio germ plasm habits hare herd illustration individuals inherited insects instinct intelligence isolation kind larvæ less live male means of Natural modification Natural Selection Naturalist necessarily nest neuter observed obvious occur offspring Organic Evolution Origin of Species phenomena plants possible preservation prey Prince Kropotkin principle produced protection race reason resemblance result Romanes says seems sexual reproduction Sexual Selection similar variants sometimes stability of species structure struggle for existence supposed survival take place theory of Natural tion transmutation of species varieties Wallace Weismann white-tailed eagle wild young
Pasajes populares
Página 40 - Things base and vile, holding no quantity, Love can transpose to form and dignity. Love looks not with the eyes, but with the mind ; And therefore is wing'd Cupid painted blind...
Página 492 - I, that am curtail'd of this fair proportion, Cheated of feature by dissembling nature, Deform'd, unfinish'd, sent before my time Into this breathing world, scarce half made up, And that so lamely and unfashionable That dogs bark at me as I halt by them...
Página 312 - So careful of the type' ? but no. From scarped cliff and quarried stone She cries, 'A thousand types are gone: I care for nothing, all shall go.
Página 467 - We could never have loved the earth so well if we had had no childhood in it, - if it were not the earth where the same flowers come up again every spring that we used to gather with our tiny fingers as we sat lisping to ourselves on the grass; the same hips and haws on the autumn's hedgerows; the same redbreasts that we used to call "God's birds," because they did no harm to the precious crops.
Página 531 - God ! that one might read the book of fate, And see the revolution of the times Make mountains level, and the continent, Weary of solid firmness, melt itself Into the sea...
Página 132 - Say,' there be : Yet nature is made better by no mean, But nature makes that mean: so, o'er that art Which, you say, adds to nature, is an art That nature makes.
Página 449 - Happy is he who lives to understand Not human nature only, but explores All natures, to the end that he may find The law that governs each : and where begins The union, the partition where, that makes Kind and degree among all visible beings ; The constitutions, powers, and faculties...
Página 45 - Thy crowned are as the locusts, and thy captains as the great grasshoppers, which camp in the hedges in the cold day, but when the sun ariseth they flee away, and their place is not known where they are.
Página 68 - Seedlings, also, are destroyed in vast numbers by various enemies ; for instance, on a piece of ground three feet long and two wide, dug and cleared, and where there could be no choking from other plants, I marked all the seedlings of our native weeds as they came up, and out of the 357 no less than 295 were destroyed, chiefly by slugs and insects.
Página 132 - But nature makes that mean: so, o'er that art, Which you say adds to nature, is an art That nature makes. You see, sweet maid, we marry A gentler...