| Biological Sciences Curriculum Studies - 2002 - عدد الصفحات: 164
...selection could be applied to organisms living in a state of nature remained for some time a mystery to me. In October 1838, that is, fifteen months after I had...prepared to appreciate the struggle for existence which every where goes on from long-continued observation of the habits of animals and plants, it at once... | |
| Hans Siggaard Jensen, Lykke Margot Richter, Morten Thanning Vendel_ - 2003 - عدد الصفحات: 242
...selection could be applied to organisms living in a state of nature remained for some time a mystery to me. In October 1838, that is, fifteen months after I had...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... | |
| Steven Darian - 2003 - عدد الصفحات: 268
...The answer came from a wholly unexpected source. As he relates in his notebooks: In October 1838, 15 months after I had begun my systematic enquiry, I...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... | |
| Mark C. Taylor - 2003 - عدد الصفحات: 353
...moments in the development of his thinking: 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 continued observation of the habits of animals and plants, it at once struck me that under these... | |
| R. D. Keynes - 2003 - عدد الصفحات: 472
...notebook D he was concentrating on the role of reproduction, when as he wrote in his Autobiography: In October 1838, that is fifteen months after I had...enquiry, I happened to read for amusement Malthus on Population,103 and being well prepared to appreciate the struggle for existence which everywhere goes... | |
| Sandra Harding, Merrill B. Hintikka † - 2003 - عدد الصفحات: 376
...encountered Malthus's Essay on the Principles of Population (1798). In his Autobiography, Darwin writes: In October 1838, that is, fifteen months after I had...systematic enquiry, I happened to read for amusement Malthas on Population, and being well prepared to appreciate the struggle for existence which everywhere... | |
| Jan Sapp - 2003 - عدد الصفحات: 388
...provide the conditions for natural selection: In October 1838 [actually September 28l. that is, 15 months after I had begun my systematic enquiry, I...read for amusement "Malthus on Population" and being well-prepared to appreciate the struggle for existence which even-where goes on from long-continued... | |
| William M. Dugger, Howard J. Sherman - 2003 - عدد الصفحات: 376
...Darwinian imagery of nature "red in tooth and claw." 4 Darwin believed that the facts spoke for themselves: the "struggle for existence which everywhere goes...long-continued observation of the habits of animals and plants" [Darwin 1958, 120; Flew 1970, 49]. But the roots of Darwin's theory may lie less in facts than in the... | |
| Sandra Harding, Merrill B. Hintikka † - 2003 - عدد الصفحات: 384
...encountered Malthus's Essay on the Principles of Population (1798). In his Autobiography, Darwin writes: In October 1838, that is, fifteen months after I had begun my systematic enquiry, I happened to lead foi amusement Malthus on Population, and being well prepared to appreciate the struggle for existence... | |
| Ian Glynn - 1999 - عدد الصفحات: 468
...for some time a mystery'. Then, in October 1838, he happened to read 'for amusement' Malthus's Essay on Population, and 'being well prepared to appreciate...the struggle for existence which everywhere goes on ... it at once struck [him] that under these circumstances favourable variations would tend to be preserved,... | |
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