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" Variability from the indirect and direct action of the conditions of life, and from use and disuse; a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection, entailing Divergence of Character and the Extinction... "
On the Origin of Species by Means of Natural Selection: Or The Preservation ... - Página 423
por Charles Darwin - 1870 - 440 páginas
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The New Englander, Volúmenes19-20

1861
...defines comprehensively as laws of Growth with Reproduction, Inheritance, and Variability, with a Ratio of Increase so high as to lead to a Struggle for Life, and as a consequence to Natural Selection. "It is interesting to contemplate an entangled " Edward Everett, at the inauguration of Mr. Webster's...
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Bericht über die fortschritte der anatomie und physiologie ... 1856-71, Volumen5

1860
...the indirect and direct action of the external condition of life , and frotn use and disuse , a ratio of increase so high as to lead to a struggle for life...natural selection, entailing divergence of character and to the extinction of less-improved forms. Thus from the war of nature, from famine and death, the most...
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Crosthwaite's Register of facts and occurrences relating to literature, the ...

Crosthwaite and co - 1860
...the indirect and direct action of the external conditions of life, and from use and disuse ; a Ratio of Increase so high as to lead to a Struggle for Life,...entailing Divergence of Character and the Extinction of less improved forms." From this recapitulatory chapter, we shall make but two more sets of extracts,...
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Life on the Earth: Its Origin and Succession

John Phillips - 1860 - 224 páginas
...the indirect and direct action of the external conditions of life, and from use and disuse ; a ratio of increase so high as to lead to a struggle for life,...entailing divergence of character, and the extinction of less improved forms. Thus, from the war of nature, from famine and death, the most exalted object which...
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The Christian observer [afterw.] The Christian observer and advocate, Volumen60

1860
...Finally, at the conclusion of the argument, the definite view comes out in no ambiguous language : — "Thus, from the war of nature, from famine and death,...object which we are capable of conceiving, namely, thn production of the higher animals, directly follows. There is grandeur in this view of life, with...
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The Past and Present Life of the Globe: Being a Sketch in Outline of the ...

David Page - 1861 - 256 páginas
...the indirect and direct action of the external conditions of life, and from use and disuse ; a ratio of increase so high as to lead to a struggle for life,...entailing divergence of character and the extinction of less improved forms. Thus, from the war of nature, from famine and death, the most exalted object we...
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The Past and Present Life of the Globe: Being a Sketch in Outline of the ...

David Page - 1861 - 256 páginas
...the indirect and direct action of the external conditions of life, and from use and disuse ; a ratio of increase so high as to lead to a struggle for life,...entailing divergence of character and the extinction of less improved forms. Thus, from the war of nature, from famine and death, the most exalted object we...
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The Anthropological Review, Volumen1

1863
...is most sound on this point. That the extirpation of the lower race should be the immediate cause of "the most exalted object which we are capable of conceiving, namely, the production of the. higher animals,"* is a sound biological generalization. The historical event, that the autochthonous Gaulish race has...
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Analysis of Darwin, Huxley and Lyell, Being a Critical Examination of the ...

Henry A. DuBois - 1866 - 94 páginas
...operation ; " Growth, with Ke-production ;" " Variability ;" and especially his main law, " a Eatio of Increase so high as to lead to a Struggle for Life,...entailing Divergence of character, and the Extinction of less improved forms." We are ready to admit, that in this state of things, at an early day, some one...
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Faith and Thought, Volumen2

1867
...indirect and direct action of the external conditions of life and from use and disuse ; and 4th, a ratio of increase so high as to lead to a struggle for life." Now No. 3, you will observe, is in antithesis to Nos. 1 and 2. Variability, and not reproduction or...
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