 There is no exception to the rule that every organic being naturally increases at so high a rate, that, if not destroyed, the earth would soon be covered by the progeny of a single pair. Even slow-breeding man has doubled in twenty-five years, and at...  Animals: A Text-book of Zoology - Página 115por David Starr Jordan, Vernon Lyman Kellogg, Harold Heath - 1905Visualização integral - Acerca deste livro
 | 1889 - 434 páginas
...progeny of a single pair. Even slow-breeding man doubles in twentyfive years, and at this rate in a few thousand years, there would literally not be standing room for his progeny." Again he says : "Lighten any check, mitigate the destruction ever so little, and the number of the... | |
 | 1860 - 982 páginas
...a single pair. Even slow-breeding man has doubled in twenty-rive years, and at this rate, in a few thousand years, there would literally not be standing room for his progeny. Linnseus has calculated that if an annual plant produced only two seeds — and there is no plant so... | |
 | Charles Darwin - 1861 - 470 páginas
...a single pair. Even slow-breeding man has doubled in twenty-live years, and at this rate, in a few thousand years, there would literally not be standing room for his progeny. Linnaeus has calculated that if an annual plant produced only two seeds — and there is no plant so... | |
 | 1861 - 562 páginas
...of a single pair. Even slow-breeding man has doubled in twenty-five years, and at this rate in a few thousand years there would literally not be standing room for his progeny. Linneus has calculated that if an annual plant produced ouly two seeds — and there is no plant so... | |
 | Illinois State Agricultural Society - 1861 - 736 páginas
...a single pair. Even slowbreeding man lias doubled in twenty-five years ; and ut this rate, iu a few thousand years there would literally not be standing room for his progeny. * * * In looking at Xature, it i-< most necessary to keep the foregoing considerations always in mind... | |
 | Illinois Natural History Society - 1861 - 224 páginas
...a single pair. Even slowbreeding man has doubled in twenty-five yea s; and at this rate, in a ft w thousand years, there would literally not be standing room for his progeny. * * * In looking at Nature, it is most necessary to k< ep the fon going considerations always in mind... | |
 | James Samuelson, Henry Lawson, William Sweetland Dallas - 1876 - 508 páginas
...covered with the progeny of a single pair. Even slow-breeding man has doubled in twenty-five years ; and at this rate in less than a thousand years there would literally not be standing-room for his progeny. . . . The elephant is reckoned the slowest breeder of all known animals,... | |
 | Charles Darwin - 1864 - 472 páginas
...a single pair. Even slow-breeding man has doubled in twenty-five years, and at this rate, in a few thousand years, there would literally not be standing room for his progeny. Linnaeus has calculated that if an annual plant produced only two seeds — and there is no plant so... | |
 | Henry Mills Alden, Frederick Lewis Allen, Lee Foster Hartman, Thomas Bucklin Wells - 1867 - 848 páginas
...young at once; "even slow-breeding man has doubled in twenty-five years ; and at this rate, in a few thousand years, there would literally not be standing room for his progeny." The result of this geometrical increase of animals and plants is ably set forth by Darwin in his chapter... | |
 | Charles Darwin - 1875 - 504 páginas
...covered by the progeny of a single pair. Even slow-breeding man has doubled in twenty-five years, and at this rate, in less than a thousand years, there would literally not be standing-room for his progeny. Linnaeus has calculated that if an annual plant produced only two seeds... | |
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