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Raamatud Books 1 - 10 of 11 on ... species will present various degrees of capacity for ensuring the means of preserving....
" ... species will present various degrees of capacity for ensuring the means of preserving life; and it is thus we account for the abundance or rarity of species. Our ignorance will generally prevent us from accurately tracing the effects to their causes;... "
Contributions to the Theory of Natural Selection: A Series of Essays - Page 40
by Alfred Russel Wallace - 1871 - 384 lehte
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Zoological Journal of the Linnean Society, 3–4. köide

Linnean Society of London - 1859
...accurately tracing the effects to thcir causes ; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points — lut, that the animal population of a country is generally stationary, bcing kept down by...
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Natural Selection and Tropical Nature: Essays on Descriptive and Theoretical ...

Alfred Russel Wallace - 1891 - 492 lehte
...tracing the effects to their causes ; but could we become perfectly acquainted with the organisation and habits of the various species of animals, and...If now we have succeeded in establishing these two points — 1st, that the animal population of a country is generally stationary, being kept down by...
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The Popular Science Monthly, 60. köide

1902
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points — 1st, that the animal population of a country is generally stationary, being kept down by...
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Zoologist: A Monthly Journal of Natural History, 16. köide

Edward Newman, James Edmund Harting - 1858
...accm'ately tracing the effects to their causes ; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points — 1st, that ihe animal population of a country is generally stationary, being kept down by...
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Evolution: Genesis and Revelations: With Readings from Empedocles to Wilson

C. Leon Harris - 1981 - 339 lehte
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...abundance of individuals which is the necessary result. lf now we have succeeded in establishing these two points — 1st, that the animal population of a...
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The Correspondence of Charles Darwin: 1858-1859

Charles Darwin, Frederick Burkhardt, Sydney Smith - 1985 - 671 lehte
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points — ist, that the animal population of a country is generally stationary, being kept down by...
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On Evolution: The Development of the Theory of Natural Selection

Charles Darwin - 1996 - 356 lehte
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points — 1st, that the animal population of a country is generally stationary, being kept down by...
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Galileo's Commandment: 2,500 Years of Great Science Writing

Edmund Blair Bolles - 1999 - 512 lehte
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points — 1st, that the animal population of a country is generally stationary, being kept down by...
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The Alfred Russel Wallace Reader: A Selection of Writings from the Field

Alfred Russel Wallace - 2002 - 219 lehte
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points; first, that the animal population of a country is generally stationary, being kept down by...
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Infinite Tropics: An Alfred Russel Wallace Anthology

Alfred Russel Wallace - 2003 - 430 lehte
...from accurately tracing the effects to their causes; but could we become perfectly acquainted with the organization and habits of the various species of...If now we have succeeded in establishing these two points - 1st, that the animal population of a country is generally stationary, being kep I down by...
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