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Raamatud Books 11 - 20 of 21 on ... even identical with those of domestic animals, and are governed by the same laws....
" ... even identical with those of domestic animals, and are governed by the same laws as regards their permanence or further variation. But it is the object of the present paper to show that this assumption is altogether false, that there is a general... "
Contributions to the Theory of Natural Selection: A Series of Essays - Page 27
by Alfred Russel Wallace - 1870 - 384 lehte
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On Evolution: The Development of the Theory of Natural Selection

Charles Darwin - 1996 - 356 lehte
...overcome by assuming that such varieties have strict limits, and can never again vary further from the original type, although they may return to it, which,...tendency of varieties to return to the parent form. The life of wild animals is a struggle for existence. The full exertion of all their faculties and...
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Galileo's Commandment: 2,500 Years of Great Science Writing

Edmund Blair Bolles - 1999 - 512 lehte
...return to it, which, from the analogy of the domesticated animals, is considered to be highly probably, if not certainly proved. It will be observed that...tendency of varieties to return to the parent form. The Struggle for Existence The life of wild animals is a struggle for existence. The full exertion...
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The Alfred Russel Wallace Reader: A Selection of Writings from the Field

Alfred Russel Wallace - 2002 - 219 lehte
...London 3, no. 9 (1858):53-62. varieties have strict limits, and can never again vary further from the original type, although they may return to it, which,...tendency of varieties to return to the parent form. The life of wild animals is a struggle for existence. The full exertion of all their faculties and...
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The Borderlands of Science: Where Sense Meets Nonsense

Michael Shermer - 2001 - 368 lehte
...likely Darwin received Wallace's essay on June 18. It contained, for Darwin, an all too familiar theme that "there is a general principle in nature which...departing further and further from the original type. . . ."20 Darwin was stunned. "I never saw a more striking coincidence," he told Lyell in a letter dated...
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Infinite Tropics: An Alfred Russel Wallace Anthology

Alfred Russel Wallace - 2003 - 430 lehte
...animals, and are governed by the same laws as regards their permanence of further variation. But this is the object of the present paper to show that this...tendency of varieties to return to the parent form. The life of wild animals is a struggle for existence. The full exertion of all their faculties and...
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In Darwin's Shadow: The Life and Science of Alfred Russel Wallace: A ...

Michael Shermer - 2002 - 448 lehte
...Darwin's eye first, but one can imagine that he must have been taken aback by Wallace's conclusion that "there is a general principle in nature which...departing further and further from the original type." Whatever it was, Darwin was stunned by what he read. He immediately put pen to paper and wrote his...
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On the Origin of Species

Charles Darwin - 2003 - 672 lehte
...overcome by assuming that such varieties have strict limits, and can never again vary further from the original type, although they may return to it, which,...tendency of varieties to return to the parent form. The life of wild animals is a struggle for existence. The full exertion of all their faculties and...
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An Elusive Victorian: The Evolution of Alfred Russel Wallace

Martin Fichman - 2010 - 416 lehte
...scientific elite. THE 1858 ESSAY: BREVITY AND BRILLIANCE The object of Wallace's 1858 essay was to show "that there is a general principle in nature which...departing further and further from the original type." His argument proceeded from the premise that the "struggle for existence" among animals in the wild...
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Darwin and International Relations: On the Evolutionary Origins of War and ...

Bradley A. Thayer - 2004 - 425 lehte
...independently of Charles Darwin, succinctly captured a major part of the answer, natural selection: "There is a general principle in nature which will...variations, departing further and further from the original type."1 However, a complete answer to the question requires a discussion of Darwin's thought, particularly...
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The Scientific Literature: A Guided Tour

Joseph E. Harmon, Alan G. Gross - 2007 - 327 lehte
...naturalists, and has led to a very general and somewhat prejudiced belief in the stability of species. . . . But it is the object of the present paper to show...tendency of varieties to return to the parent form. The life of wild animals is a struggle for existence. The full exertion of all their faculties and...
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