Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 páginas |
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Página vi
... organs . I It has always been considered a weakness in Darwin's work that he based his theory , primarily , on the evidence of variation in domesticated animals and cultivated plants . have endeavoured to secure a firm foundation for ...
... organs . I It has always been considered a weakness in Darwin's work that he based his theory , primarily , on the evidence of variation in domesticated animals and cultivated plants . have endeavoured to secure a firm foundation for ...
Página x
... organs - Variations in the skull - Variations in the habits of animals - The variability of plants - Species which vary little - Con- cluding remarks Pages 41-82 • CHAPTER IV VARIATION OF DOMESTICATED ANIMALS AND CULTIVATED PLANTS The ...
... organs - Variations in the skull - Variations in the habits of animals - The variability of plants - Species which vary little - Con- cluding remarks Pages 41-82 • CHAPTER IV VARIATION OF DOMESTICATED ANIMALS AND CULTIVATED PLANTS The ...
Página 3
... organs are strengthened by constant use , while they are weakened or even completely lost by disuse . The arguments of Lamarck did not , however , satisfy naturalists , and though a few adopted the view that closely allied species had ...
... organs are strengthened by constant use , while they are weakened or even completely lost by disuse . The arguments of Lamarck did not , however , satisfy naturalists , and though a few adopted the view that closely allied species had ...
Página 14
... organ- ised beings . To most persons nature appears calm , orderly , and peaceful . They see the birds singing in the trees , the insects hovering over the flowers , the squirrel climbing among the tree - tops , and all living things in ...
... organ- ised beings . To most persons nature appears calm , orderly , and peaceful . They see the birds singing in the trees , the insects hovering over the flowers , the squirrel climbing among the tree - tops , and all living things in ...
Página 39
... organ of their bodies , while this exercise leads to the satisfaction of all their physical needs . In our own case , we can give no more perfect definition of happiness , than this exercise and this satisfaction ; and we must therefore ...
... organ of their bodies , while this exercise leads to the satisfaction of all their physical needs . In our own case , we can give no more perfect definition of happiness , than this exercise and this satisfaction ; and we must therefore ...
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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 Alfred Russel Wallace Visualização integral - 1890 |
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