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
... evidence of variation in domesticated animals and cultivated plants . have endeavoured to secure a firm foundation for the theory in the variations of organisms in a state of nature ; and as the exact amount and precise character of ...
... evidence of variation in domesticated animals and cultivated plants . have endeavoured to secure a firm foundation for the theory in the variations of organisms in a state of nature ; and as the exact amount and precise character of ...
Página xiii
... EVIDENCES OF EVOLUTION What we may expect - The number of known species of extinct animals— Causes of the imperfection of the geological record - Geological evidences of evolution - Shells - Crocodiles - The rhinoceros tribe- The ...
... EVIDENCES OF EVOLUTION What we may expect - The number of known species of extinct animals— Causes of the imperfection of the geological record - Geological evidences of evolution - Shells - Crocodiles - The rhinoceros tribe- The ...
Página 27
... evidence of actual cases of increase must be adduced . That even the larger animals , which breed comparatively slowly , increase enormously when placed under favourable conditions in new countries , is shown . by the rapid spread of ...
... evidence of actual cases of increase must be adduced . That even the larger animals , which breed comparatively slowly , increase enormously when placed under favourable conditions in new countries , is shown . by the rapid spread of ...
Página 38
... evidence to show that violent deaths , if not too prolonged , are painless and easy ; even in the case of man , whose nervous system is in all probability much more susceptible to pain than that of most animals . In all cases in which ...
... evidence to show that violent deaths , if not too prolonged , are painless and easy ; even in the case of man , whose nervous system is in all probability much more susceptible to pain than that of most animals . In all cases in which ...
Página 46
... evidence as to the extent and amount of individual variation . I will first give a case among the Reptilia from some of Mr. Darwin's un- published MSS . , which have been kindly lent me by Mr. Francis Darwin . " M. Milne Edwards ...
... evidence as to the extent and amount of individual variation . I will first give a case among the Reptilia from some of Mr. Darwin's un- published MSS . , which have been kindly lent me by Mr. Francis Darwin . " M. Milne Edwards ...
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