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" I have now recapitulated the facts and considerations which have thoroughly convinced me that species have been modified during a long course of descent. This has been effected chiefly through the natural selection of numerous successive, slight, favourable... "
Darwinism: An Exposition of the Theory of Natural Selection with Some of Its ... - Página 410
por Alfred Russel Wallace - 1901
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The Living Age, Volume 235

1902
...natural selection of numerous successive, slight, favorable variations; aided In an important manner Ъу the inherited effects of the use and disuse of parts;...seem to us in our ignorance to arise spontaneously. It appears that I formerly underrated the frequency and value of these latter forms of variation, as...
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The Bibliotheca Sacra, Volume 33

1876
...unimportant manner — that is, in relation to adaptive structures, whether past or present — by tho direct action of external conditions, and by variations...seem to us, in our ignorance, to arise spontaneously. As my conclusions have lately been much misrepresented, and it has been stated that I attribute the...
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The American Naturalist

1909
...the use and disuse of parts, and in an important manner, that is in relation to adaptive structure, whether past or present, by the direct action of external conditions, and by variations rvhich seem to us in our ignorance to arise spontaneously. It appears that I formerly underrated the...
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The Dublin Review, Volume 18;Volume 70

Nicholas Patrick Wiseman - 1872
...distinctly admits that his opinions have somewhat changed since his first edition. " Species," he says, " have been modified during a long course of descent....seem to us in our ignorance to arise spontaneously. It appears that I formerly underrated the frequency and value of these latter forms of variation, as...
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On the Origin of Species by Means of Natural Selection, Or The Preservation ...

Charles Darwin - 1875 - 458 páginas
...species have been modified, during a long course of descent. This has been effected chiefly through tho natural selection of numerous successive, slight,...seem to us in our ignorance to arise spontaneously. It appears that I formerly underrated the frequency and value of these latter forms of variation, as...
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Proceedings of the American Association for the Advancement of Science

1875
...it has been effected "chiefly through the natural selection of numerous successive slight favorable variations, aided in an important manner by the inherited...to us, in our ignorance, to arise spontaneously." ("Origin of Species," 6th edition, 1873, p. 421.) Recently the effect of local isolation has been sought...
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Summarized Proceedings and a Directory of Members, Volume 23

American Association for the Advancement of Science - 1875
...it has been effected "chiefly through the natural selection of numerous successive slight favorable variations, aided in an important manner by the inherited...to us, in our ignorance, to arise spontaneously." ("Origin of Species," 6th edition, 1873, p. 421.) Recently the effect of local isolation has been sought...
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The Church Quarterly Review, Volume 55

1903
...emphatic declaration as given in the sixth edition of the Origin. ' I have now recapitulated,' he says, 'the facts and considerations which have thoroughly...seem to us in our ignorance to arise spontaneously. It appears that I formerly underrated the frequency and value of these latter forms of variation, as...
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Bibliotheca Sacra, Volume 33

1876
...This has been effected chiefly through the natural selection of numerous successive, slight, favorable variations ; aided in an important manner by the inherited...seem to us, in our ignorance, to arise spontaneously. As my conclusions have lately been much misrepresented, and it has been stated that I attribute the...
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Evolution

1881
...This has been effected chiefly through the natural selection of numerous successive, slight, favorable variations, aided in an important manner by the inherited...seem to us in our ignorance to arise spontaneously. It appears that I formerly underrated the frequency and value of these latter forms of variation, as...
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