Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 páginas |
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Página x
... continued existence of low forms of life - Extinction of low types among the higher animals— Circumstances favourable to the origin of new species - Probable origin of the dippers - The importance of isolation - On the advance of ...
... continued existence of low forms of life - Extinction of low types among the higher animals— Circumstances favourable to the origin of new species - Probable origin of the dippers - The importance of isolation - On the advance of ...
Página 13
... continued preservation of favourable variations . We These matters will be discussed in the four succeeding chapters , though in a somewhat different order - the struggle for existence and the power of rapid multiplication , which is ...
... continued preservation of favourable variations . We These matters will be discussed in the four succeeding chapters , though in a somewhat different order - the struggle for existence and the power of rapid multiplication , which is ...
Página 19
... continued study for several years to determine all the differences in the organic life of the two areas , but the facts stated by Mr. Darwin are sufficient to show how great a change may be effected by the introduction of a single kind ...
... continued study for several years to determine all the differences in the organic life of the two areas , but the facts stated by Mr. Darwin are sufficient to show how great a change may be effected by the introduction of a single kind ...
Página 33
... continued to pass for six or eight minutes , and these again were followed by other detached bodies , all moving in the same south - east direction , till after six o'clock in the evening . The great breadth of front which this mighty ...
... continued to pass for six or eight minutes , and these again were followed by other detached bodies , all moving in the same south - east direction , till after six o'clock in the evening . The great breadth of front which this mighty ...
Página 36
... continued observation to detect the peculiarities in their mode of life which may prevent all direct competition between closely allied species dwelling in the same area . The Ethical Aspect of the Struggle for Existence . Our ...
... continued observation to detect the peculiarities in their mode of life which may prevent all direct competition between closely allied species dwelling in the same area . The Ethical Aspect of the Struggle for Existence . Our ...
Outras edições - Ver tudo
Darwinism: An Exposition of the Theory of Natural Selection, with Some of ... Alfred Russel Wallace Visualização integral - 1890 |
Darwinism: An Exposition of the Theory of Natural Selection, with Some of ... Alfred Russel Wallace Visualização integral - 1890 |
Darwinism: An Exposition of the Theory of Natural Selection ..., Volumes 1-2 Alfred Russel Wallace Visualização integral - 1889 |
Palavras e frases frequentes
abundant adapted adduced allied species America amount animals and plants appears birds breed brilliant butterflies cause characters climate closely allied colours of animals common concealment conspicuous continued cross-fertilisation crossed curious Darwin dicotyledons distinct species domestic animals effects eggs enemies Eocene evidence extinct facts faculty favourable female fertile fertilised flowers genera genus geological groups habits hybrids important increase individuals infertility inhabit insects intercrossing kind larva larvæ less living male mammalia mammals markings marsupials mimicry Miocene mode modified moths natural selection naturalists nests occur offspring organs Origin of Species peculiar pigeons Pliocene pollen portion possess probably produced Professor protectively coloured pupa regions remarkable resemblance seeds self-fertilisation Silurian similar specimens spots sterility structure struggle for existence supposed tail theory tints tion toes trees tropical usually variability variation varied varieties vegetation warning colours whole wild wings Zealand