Darwinism: An Exposition of the Theory of Natural Selection, with Some of Its ApplicationsMacmillan and Company, 1889 - 494 páginas |
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Página xii
... moths - Probable causes of these colours - Sexual selection as a supposed cause - Sexual coloration of birds - Cause of dull colours of female birds - Relation of sex colour to nesting habits - Sexual colours of other vertebrates ...
... moths - Probable causes of these colours - Sexual selection as a supposed cause - Sexual coloration of birds - Cause of dull colours of female birds - Relation of sex colour to nesting habits - Sexual colours of other vertebrates ...
Página 17
... moth ( Phalana graminis ) committed such destruction in many of the meadows of Sweden that the grass was greatly diminished in quantity , and many plants which were before choked by the grass sprang up , and the ground became variegated ...
... moth ( Phalana graminis ) committed such destruction in many of the meadows of Sweden that the grass was greatly diminished in quantity , and many plants which were before choked by the grass sprang up , and the ground became variegated ...
Página 44
... moths ) that the most numerous cases of variation have been observed , and every good collection of these insects affords striking examples . I will first adduce the testimony of Mr. Bates , who speaks of the butterflies of the Amazon ...
... moths ) that the most numerous cases of variation have been observed , and every good collection of these insects affords striking examples . I will first adduce the testimony of Mr. Bates , who speaks of the butterflies of the Amazon ...
Página 46
... moths are also very variable , and one observer recorded in the Proceedings of the Entomological Society for 1870 no less than sixteen varieties of the caterpillar of the bedstraw hawk - moth ( Deilephela galii ) . Variation among ...
... moths are also very variable , and one observer recorded in the Proceedings of the Entomological Society for 1870 no less than sixteen varieties of the caterpillar of the bedstraw hawk - moth ( Deilephela galii ) . Variation among ...
Página 74
... moth - breeding.1 Ï be- lieve , after much consideration , and many tedious experiments in diagram - making , that no better method can be adopted for bringing before the eye , both the amount and the peculiar features of individual ...
... moth - breeding.1 Ï be- lieve , after much consideration , and many tedious experiments in diagram - making , that no better method can be adopted for bringing before the eye , both the amount and the peculiar features of individual ...
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 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