 | David Starr Jordan - 1907 - 610 pages
...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,...some pains to estimate its probable minimum rate of increase; it will be safest to assume that it begins breeding when thirty years old, and goes on breeding... | |
 | Francis Rolt-Wheeler - 1909 - 328 pages
...next year produced two, and so on, then in twenty years there would be a million plants. The elephant is reckoned the slowest breeder of all known animals,...probable minimum rate of natural increase; it will be safest to assume that it begins breeding when thirty years old and goes on breeding till ninety years... | |
 | Charles Darwin - 1909 - 584 pages
...year produced two, and so on, then in twenty years there would be a million plants. The ele- ' phant is reckoned the slowest breeder of all known animals, and I have taken some pains tfa estimate its probable minimum rate of natural increase; k will be safest to assume that it begins... | |
 | 1918 - 366 pages
...millions that would be born. This may be exemplified by an illustration from natural history. The elephant is reckoned the slowest breeder of all known animals, and I have taken some painsto estimate its probable minimum rate of increase. It will be under the mark to assume that it... | |
 | Sir Robert Henry Rew - 1920 - 204 pages
...not destroyed, the earth would soon be covered by the progeny of a single pair. . . . The elephant is reckoned the slowest breeder of all known animals,...probable minimum rate of natural increase ; it will be safest to assume that it begins breeding when thirty years old, and goes on breeding till ninety years... | |
 | Rudolph Wilson Chamberlain, Joseph Sheldon Gerry Bolton - 1923 - 396 pages
...next year produced two, and so on, then in twenty years there would be a million plants. The elephant is reckoned the slowest breeder of all known animals,...probable minimum rate of natural increase; it will be safest to assume that it begins breeding when thirty years old, and goes on breeding till ninety years... | |
 | Clarence Marsh Case - 1924 - 1026 pages
...next year produced two, and so on, then in twenty years there would be a million plants. The elephant is reckoned the slowest breeder of all known animals,...probable minimum rate of natural increase: it will be safest to assume that it begins breeding when thirty years old, and goes on breeding until ninety years... | |
 | 1860 - 484 pages
...two, and so on, then in twenty rears there would bo a million plants. The elephant is reckoned to bo the slowest breeder of all known animals, and I have taken some pains to estimate its probable mini mil in rate of natural increase: it will be under the mark to assume that it breeds when thirty... | |
 | Garrett Hardin - 1995 - 350 pages
...correcting his rhetoric) Darwin immediately set his readers straight with a telling example. The elephant is reckoned the slowest breeder of all known animals,...probable minimum rate of natural increase; it will be safest to assume that it begins breeding when thirty years old, and goes on breeding till ninety years... | |
 | John Alexander Moore - 1993 - 548 pages
...years, there would literally not be standing room for his progeny . . . The elephant is reckoned to be the slowest breeder of all known animals, and I have...some pains to estimate its probable minimum rate of increase: it will be under the mark to assume that it breeds when thirty years old, and goes on breeding... | |
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The elephant is reckoned the slowest breeder of all known animals, and I have taken some pains to estimate its probable minimum rate of natural increase; it will be... 
