Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 páginas |
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Página 198
... protectively coloured pupæ , since in Papilio machaon and some others which have been experimented on , both in this country and abroad , no change can be produced on the pupa by any amount of exposure to differently coloured surround ...
... protectively coloured pupæ , since in Papilio machaon and some others which have been experimented on , both in this country and abroad , no change can be produced on the pupa by any amount of exposure to differently coloured surround ...
Página 200
... protectively coloured . Mrs. M. E. Barber remarks that " A casual observer would scarcely imagine that the highly varnished and magnificently coloured plumage of the various species of Noctarinea could be of service to them , yet this ...
... protectively coloured . Mrs. M. E. Barber remarks that " A casual observer would scarcely imagine that the highly varnished and magnificently coloured plumage of the various species of Noctarinea could be of service to them , yet this ...
Página 209
... protectively coloured ; instancing among others a little red chiton on rocks clothed with red calcareous algæ , and Crepidula plana , liv- ing within the apertures of the shells of larger species of Gasteropods and of a pure white colour ...
... protectively coloured ; instancing among others a little red chiton on rocks clothed with red calcareous algæ , and Crepidula plana , liv- ing within the apertures of the shells of larger species of Gasteropods and of a pure white colour ...
Página 210
... colour of the body suggests that its ancestors were once protectively coloured ; but , growing too large to be effectually concealed , it acquired the habit of shaking its head about in order to frighten away its enemies , and ...
... colour of the body suggests that its ancestors were once protectively coloured ; but , growing too large to be effectually concealed , it acquired the habit of shaking its head about in order to frighten away its enemies , and ...
Página 213
... protectively coloured , so that , when sitting , they are almost invisible ; and they have the habit of sitting close and almost continuously , thus effectually concealing their eggs . Pigeons and doves offer a very curious case of the ...
... protectively coloured , so that , when sitting , they are almost invisible ; and they have the habit of sitting close and almost continuously , thus effectually concealing their eggs . Pigeons and doves offer a very curious case of the ...
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