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" Each of the endless variations which we see in the plumage of our fowls must have had some efficient cause; and if the same cause were to act uniformly during a long series of generations on many individuals, all probably would be modified in the same... "
Darwin and After Darwin: Post-Darwinian questions: Heredity and utility. 1895 - Page 330
by George John Romanes - 1895
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On the origin of species by means of natural selection ; or, The ...

Charles Darwin - 1875 - 504 pages
...amount of food, colour from the nature of the food, thickness of the skin and hair from climate, &c. Each of the endless variations which we see in the...the same cause were to act uniformly during a long scries of generations on many individuals, all probably would be modified iu the same manner. Such...
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The Origin of Species by Means of Natural Selection: Or, The Preservation of ...

Charles Darwin - Evolution - 1882 - 492 pages
...amount of food, colour from the nature of the food, thickness of the skin and hair from climate, &c. Each of the endless variations which we see in the...all probably would be modified in the same manner. Such facts as the complex and extraordinary out-growths which invariably follow from the insertion...
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The Origin of Species by Means of Natural Selection: Or, The ..., Volume 1

Charles Darwin - Evolution - 1889 - 446 pages
...amount of food, colour from the nature of the food, thickness of the skin and hair from climate, &c. Each of the endless variations which we see in the plumage of our fowls rmist have had some efficient cause; and if the same cause were to act uniformly during a long series...
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Evolution of the Colors of North American Land Birds

Charles Keeler - Nature - 1890 - 922 pages
...color Mr Roman«--, in a foninole, «(notes Darwin to the effrct that • .!• li of ih«- «mil«-- variations which we see in the plumage of our fowls must have had some «(Beirut CHUM; an«l if the same causes wer« to act uniformly during the longleriesof generations...
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The Popular Science Monthly, Volume 43

Science - 1893 - 904 pages
...offspring would be of less beautiful colors than the parent, Mr. Eeeler cites Mr. Darwin, who says : " Each of the endless variations which we see in the...must have had some efficient cause ; and if the same causes were to act uniformly during the long series of generations on many individuals, all probably...
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Evolution of the Colors of North American Land Birds

Charles Keeler - Nature - 1893 - 466 pages
...Wallace's argument on the utility of color Mr Romanes, in a footnote, quotes Darwin to the effect that "each of the endless variations which we see in the...must have had some efficient cause; and if the same causes were to act uniformly during the long series of generations on many individuals, all probably...
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Charles Darwin's Works: The origin of species by means of natural selection ...

Charles Darwin - Science - 1896 - 408 pages
...amount of food, colour from the nature of the food, thickness of the skin and hair from climate, &c. Each of the endless variations which we see in the...all probably would be modified in the same manner. Such facts as the complex and extraordinary out-growths which variably follow from the insertion of...
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English Synonyms: Explained and Illustrated

J. H. A. Günther - English language - 1904 - 510 pages
...ARNOLD-FORSTER. Good artists vary their methods according to their subject and material. — j. RUSKIN. Each of the endless variations which we see in the...plumage of our fowls must have had some efficient cause. — c. DARWIN. You must more or less modify your method to suit the disposition of each child. —...
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The Origin of Species

Charles Darwin - Evolution - 1909 - 570 pages
...amount of food, colour from the nature of the food, thickness of the skin and hair from climate, etc. Each of the endless variations which we see in the...all probably would be modified in the same manner. Such facts as the complex and extraordinary out-growths which variably follow from the insertion of...
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The Harvard Classics, Volume 11

Charles William Eliot - Literature - 1909 - 596 pages
...amount of food, colour from the nature of the food, thickness of the skin and hair from climate, etc. Each of the endless variations which we see in the...all probably would be modified in the same manner. Such facts as the complex and extraordinary out-growths which variably follow from the insertion of...
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