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Books Books 1 - 10 of 64 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
1864 - 440 pages
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Proceedings of the Literary & Philosophical Society of Liverpool, Issue 15

Literary and Philosophical Society of Liverpool - 1861
...originally was a habit, and an instinct, becomes so close as not to be distinguished;" and again — "Under changed conditions of life, it is at least possible that slight modifications of instinct that there is no natural barrier to development, as long as that development is confined to cognizable...
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all the year round

CHARLES DICKENS - 1860
...under the conditions of life by which it happens to he surrounded. Under changed circumstances, it is possible that slight modifications of instinct might...shown that instincts do vary ever so little, then Mr. Darwin sees no difficulty in Natural Selection preserving and continually accumulating variations...
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Proceedings of the Liverpool Literary and Philosophical Society, Volumes 14-15

Literary and Philosophical Society of Liverpool - 1860
...originally was a habit, and an instinct, becomes so close as not to be distinguished;" and again — "Under changed conditions of life, it is at least possible that slight modifications of instinct 87 might be profitable to a species ; and if it can be shown that instincts do vary, ever so little,...
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The Darwinian Theory of the Transmutation of Species Examined by a Graduate ...

Robert Mackenzie Beverley - Evolution - 1867 - 386 pages
...examples, like every thing else in this theory, is to be traced to the operations of Natural Selection. ' 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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The Darwinian Theory of the Transmutation of Species

Robert Mackenzie Beverley - Evolution - 1867 - 386 pages
...examples, like every thing else in this theory, is to be traced to the operations of Natural Selection. ' 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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The Darwinian Theory of the Transmutation of Species

Robert Mackenzie Beverley - Evolution - 1867 - 386 pages
...examples, like every thing else in this theory, is to be traced to the operations of Natural Selection. ' Under changed conditions of life it is at least possible...can be shown that instincts do vary ever so little, ihe\ I can see no difficulty in Natural Selection preserving and continually accumulating variations...
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Spirit and mind polarity, or The disentanglement of ideas

Arthur Young - 1873
...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...modifications of instinct might be profitable to a species Changes of instinct may sometimes be facilitated by the same species having different instincts at...
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What is Darwinism?

Charles Hodge - Evolution - 1874 - 178 pages
...pointer or retriever have been known to point or to retrieve without instruction. "If," he says, " it can be shown that instincts do vary ever so little,...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 arisen."...
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On the Origin of Species by Means of Natural Selection, Or The Preservation ...

Evolution - 1875 - 458 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 tho most complex and wonderful instincts have originated....
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Humboldt Library of Popular Science Literature, Volume 2, Issues 37-48

1879
...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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