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Books Books 31 - 40 of 40 on Under changed conditions of life, it is at least possible that slight modifications....
" Under changed conditions of life, it is at least possible that slight modifications of instinct might be profitable to a species; and if it can be shown that instincts do vary ever so little, then I can see no difficulty in natural selection preserving... "
On the Origin of Species by Means of Natural Selection: Or, The Preservation ... - Page 187
by Charles Darwin - 1864 - 440 pages
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The Principles of Psychology, Volume 2

William James - Psychology - 1902
...important as corporeal structure for the welfare of each species, under its present conditions of life. Under changed conditions of life, it is at least possible...be profitable. It is thus, as I believe, that all tho most complex and wonderful instincts have arisen. ... I believe that the effects of habit are of...
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The Ethical Import of Darwinism

Jacob Gould Schurman - Ethics, Evolutionary - 1903 - 264 pages
...Darwin. Divorcing his science therefrom, he elsewhere admirably describes his position in these words : " If it can be shown that instincts do vary ever so...accumulating variations of instinct to any extent that was profitable. It is thus, as I believe, that all the most complex and wonderful instincts have originated."...
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The Soul: A Study and an Argument

David Syme - Instinct - 1903 - 234 pages
...says, " that slight variations might be profitable to a species, and if it can be shown these instincts vary ever so little, then I can see no difficulty...preserving and continually accumulating variations of instincts to any extent that was profitable. It is thus, as I believe, that all the complex and wonderful...
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The Soul: A Study and an Argument

David Syme - Instinct - 1903 - 234 pages
...the origin of instinct are well known. " It is at least possible," he says, " that slight variations might be profitable to a species, and if it can be shown these instincts vary ever so little, then I can see no difficulty in natural selection preserving and...
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The Origin of Species

Charles Darwin - Evolution - 1909 - 552 pages
...important as corporeal structures for the welfare of each species, under its present conditions of life. Under changed conditions of life, it is at least possible...accumulating variations of instinct to any extent that was profitable. It is thus, as I believe, that all the most complex and wonderful instincts have originated....
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Napoleon and History Painting: Antoine-Jean Gros's La Bataille D'Eylau

Christopher Prendergast - Art - 1997 - 223 pages
...as corporeal structures for the welfare of each species, under its present conditions of life . . . and if it can be shown that instincts do vary ever...accumulating variations of instinct to any extent that was profitable" (p. 245). Thus, just as variation in the physical features of an organism can influence...
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The Evolution of Scientific Knowledge

Hans Siggaard Jensen, Lykke Margot Richter, Morten Thanning Vendel_ - Technology & Engineering - 2003 - 225 pages
...could become inherited. On the other hand, there was the possibility of natural selection of instinct: Under changed conditions of life, it is at least possible...of instinct to any extent that may be profitable. (Darwin [1859] 1985, p. 236) The second difficulty relates to the ontological conflation of habits...
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The Squashed Philosophers

Glyn Lloyd-Hughes - Philosophy - 2005 - 436 pages
...changed conditions of life, it is at least possible that slightly changed instincts might be profitable; and if it can be shown that instincts do vary ever...no difficulty in natural selection preserving and accumulating their variations. But, as with corporeal structures, we ought to find in nature, not the...
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Nature, Volume 26

Sir Norman Lockyer - Electronic journals - 1882
...important as corporeal structures for the welfare of each species, under its present conditions of life. Under changed conditions of life, it is at least possible...accumulating variations of instinct to any extent that was profitable. It is thus, I believe, that all the most complex and wonderful instincts have originated."...
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Natural Science, Volume 13

Natural history - 1898
...Bulletin No. 2. Scientific Series No 1. 1898. IN discussing the problem of Instinct, Darwin wrote, "If it can be shown that instincts do vary ever so...accumulating variations of instinct to any extent that was profitable." This sentence might well serve as the text for the charming book before us, and seems...
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