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" ... of the year when food was scarcest; they would also rear more young, which would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can see no more reason to doubt that these causes in a thousand generations... "
The American Journal of Science and Arts - Page 47
1869
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Parrots in captivity, with notes by the hon. F.G. Dutton, Volumes 1-2

William Thomas Greene - 1884 - 540 pages
...scarcest; they would also rear more young, which would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can...greyhounds can be improved by selection and careful breeding.' Yet this condition of things, if followed out to its full consequences, seems to lead only...
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Popular Science Monthly, Volume 60

Science - 1902 - 584 pages
...scarcest; they would also rear more young, which would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can...greyhounds can be improved by selection and careful breeding. So would it be with plants under similar circumstances. If the number of individuals of a...
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The Foundations of the Origin of Species: Two Essays Written in 1842 and 1844

Charles Darwin - Evolution - 1909 - 310 pages
...they would also rear more young, which young would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can see no more reason to doubt but that these causes in a thousand generations would produce a marked effect, and adapt the form of...
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Zoologist: A Monthly Journal of Natural History, Volume 16

English periodicals - 1858 - 478 pages
...scarcest ; they would also rear more young, which would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can...greyhounds can be improved by selection and careful breeding. So would it be with plants under similar circumstances. If the number of individuals of a...
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Evolution: Genesis and Revelations: With Readings from Empedocles to Wilson

C. Leon Harris - Science - 1981 - 360 pages
...would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. l can see no more reason to doubt that these causes...greyhounds can be improved by selection and careful breeding. So would it be with plants under similar circumstances. lf the number of individuals of a...
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The Norton History of the Environmental Sciences

Peter J. Bowler - Nature - 1993 - 676 pages
...they would also rear more young, which young would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can see no more reason to doubt but that these causes in a thousand generations would produce a marked effect, and adapt the form of...
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On Evolution: The Development of the Theory of Natural Selection

Charles Darwin - Reference - 1996 - 382 pages
...they would also rear more young, which young would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can see no more reason to doubt but that these causes in a thousand generations would produce a marked effect, and adapt the form of...
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Palaeontology, Volume 6

Richard Owen - Science - 2003 - 472 pages
...scarcest ; they would also rear more young, which would tend to inherit these; slight peculiarities. The less fleet ones would be rigidly destroyed. I can...greyhounds can be improved by selection and careful breeding.* Observation of animals in a state of nature, however, is still required to show their degree...
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On the Origin of Species

Charles Darwin - History - 2003 - 676 pages
...scarcest; they would also rear more young, which would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can...greyhounds can be improved by selection and careful breeding. So would it be with plants under similar circumstances. If the number of individuals of a...
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Evolution: The History of an Idea

Peter J. Bowler - Science - 2003 - 485 pages
...they would also rear more young, which young would tend to inherit these slight peculiarities. The less fleet ones would be rigidly destroyed. I can see no more reason to doubt but that these causes in a thousand generations would produce a marked effect, and adapt the form of...
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