 | Anton Pannekoek - 1913 - عدد الصفحات: 68
...for existence. "In October, 1838, that is, fifteen months after I had begun my systematic inquiry, I happened to read for amusement Malthus on population,...struggle for existence which everywhere goes on from long continuous observation of the habits of animals and plants, it at once struck me that under these... | |
 | George Boughton Curtiss - 1912 - عدد الصفحات: 600
...his law of "natural selection" by reading the economic writings of Thomas Robert Malthus. He says : In October, 1838, that is, fifteen months after I had begun my systematic inquiry, I happened to read for amusement " Malthus on Population," and being well prepared to appreciate... | |
 | John Theodore Merz - 1912 - عدد الصفحات: 832
...foundation for all have come upon it accidentally. In his Autobiography ('Life,' vol. i. p. 83) he writes : "In October 1838 — that is, fifteen months after I had begun my systematic inquiry — I happened to read for amusement ' Miilthu* on Population,' and being well prepared to... | |
 | Anton Pannekoek - 1912 - عدد الصفحات: 80
...autobiography Darwin declares that it was Malthus' book which made him think about the struggle for existence. "In October, 1838, that is, fifteen months after I had begun my systematic inquiry, I happened to read for amusement Malthus on population, and being well prepared to appreciate... | |
 | Henry Mills Alden, Thomas Bucklin Wells, Lee Foster Hartman - 1902 - عدد الصفحات: 1042
...pestilence, and famine, which tend to keep population within fixed limits. Being well prepared, as he said, to appreciate the struggle for existence which everywhere...the habits of animals and plants, it at once struck him that under these circumstances favorable variations would tend to be preserved, and unfavorable... | |
 | Ernest Carroll Moore - 1915 - عدد الصفحات: 376
...kinds of facts " — about species and varieties. In October, 1838, he read " Malthus on Population." " Being well prepared to appreciate the struggle for existence which everywhere goes on from long continued observation of the habits of animals and plants, it at once struck me that under these... | |
 | Carl Kelsey - 1916 - عدد الصفحات: 432
...the World " : " In October, 1838, that is, fifteen months after I had begun my systematic inquiry, I happened to read for amusement Malthus on Population,...existence which everywhere goes on from long-continued observations of the habits of plants and animals, it at once struck me that under these circumstances... | |
 | Carl Kelsey, E. Kelsey - 1916 - عدد الصفحات: 432
...and Alfred Russel Wallace (1823-1913). Darwin wrote in his " Naturalist's Voyage Round the World ": " In October, 1838, that is, fifteen months after I had begun my systematic inquiry, I happened to read for amusement Malthus on Population, and being well prepared to appreciate... | |
 | Frank Herbert Hayward - 1917 - عدد الصفحات: 284
...flash of interpretation came in October 1838 : " Fifteen months after I had begun my systematic inquiry I happened to read for amusement Malthus on Population,...the struggle for existence which everywhere goes on ... it at once struck me that under these circumstances favourable variations would tend to be preserved... | |
 | Edwin Lillie Miller - 1917 - عدد الصفحات: 688
...survival of the fittest, I have called Natural Selection." — Ibid. Chapter IV. " In October 1838 I read Malthus ' On Population,' and, being well prepared...the struggle for existence which everywhere goes on, it at once struck me that under these circumstances favorable variations would tend to be preserved... | |
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I happened to read for amusement Malthus on Population, and being well prepared to appreciate the struggle for existence which everywhere goes on from longcontinued observation of the habits of animals and plants... 
