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" The action of climate seems at first sight to be quite independent of the struggle for existence ; but in so far as climate chiefly acts in reducing food, it brings on the most severe struggle between the individuals, whether of the same or of distinct... "
The Origin of Species
by Charles Darwin - 19?? - 238 pages
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The Evolution Debate, 1813-1870: On the Origin of Species

Charles Darwin - Science - 2003 - 502 pages
...drought, I believe to be the most effective of all checks. I estimated that the winter of 1854^-65 destroyed four-fifths of the birds in my own grounds...cold, acts directly, it will be the least vigorous, or tliose which have got least food through the advancing winter, which will suffer most. When we travel...
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On the Origin of Species

Charles Darwin - History - 2003 - 672 pages
...or drought, I believe to be the most effective of all checks. I estimated that the winter of 1854-55 destroyed four-fifths of the birds in my own grounds;...cold, acts directly, it will be the least vigorous, or those which have got least food through the advancing winter, which will suffer most. When we travel...
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The Indelible Stamp: The Evolution of an Idea

Charles Darwin - Science - 2005 - 1260 pages
...drought, I believe to be the most effective of all checks. I estimated that the winter of 1854 55 destroyed four-fifths of the birds in my own grounds;...cold, acts directly, it will be the least vigorous, or those which have got least food through the advancing winter, which will suffer most. When we travel...
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Understanding Biology Through Evolution

Bruce D. Olsen - Biology - 2005 - 151 pages
...less food per individual is available iii) With his customary insight, Darwin recognized this point: "The action of climate seems at first sight to be...struggle between the individuals, whether of the same or distinct species, which subsist on the same kind of food"28 9) The growth rate (G) of a population...
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Natural Selection: The Global Struggle for Existence

Charles Darwin - 2008 - 158 pages
...be the most effective of all checks. I estimated that the winter of 1854-55 destroyed four- fifths of the birds in my own grounds; and this is a tremendous...cold, acts directly, it will be the least vigorous, or those which have got least food through the advancing winter, which will suffer most. When we travel...
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Annual Report

Smithsonian Institution - Science - 1906
...leading exponents of the doctrine of natural selection. To quote Mr. Darwin's own words on this point : The action of climate seems at first sight to be quite...struggle for existence; but, in so far as climate chiefly act.", in reducing food, it hrings on the most severe struggle between the individuals, whether of...
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