 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...  Animal studies - Página 278por David Starr Jordan - 1903 - 459 páginasVisualização integral - Acerca deste livro
 | 1860 - 484 páginas
...single pair. Even slow-breeding man. lias doubled in twenty-five years, and at this rate, in a few thousand years, there, would literally not be standing room for his progeny. Linuxus has calculated that if au annual plaut produced only two seeds — and there is no plant so... | |
 | 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... | |
 | 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... | |
 | 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... | |
 | 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... | |
 | 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 rtanding-room for his progeny. Linnieus has caleulated that if an annual plant produced only two seeds... | |
 | 1881 - 708 páginas
...would soon be covered by 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—and... | |
 | Charles Darwin - 1882 - 492 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 ba standing-room for his progeny. Linnaeus has calculated that if an annual plant produced only two... | |
 | William Miller - 1883 - 376 páginas
...would be 805,306,368 as the number of those then alive. Darwin places it higher, for he says2 that in less than a thousand years there would literally >not be standing room for man's progeny. Many causes, however, concur to keep down population. It would never grow and be sustained... | |
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