 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 under the mark to assume that it breeds when thirty years old, and goes on breeding till...  Heredity and Selection in Sociology - Сторінка 5автори: Georges Chatterton-Hill - 1907 - 571 стор.Повний перегляд - Докладніше про цю книгу
 | Nicholas Patrick Wiseman - 1860 - 594 стор.
...seeds — and there is no plant so unproductive as this — and their seedlings next year produced two, and so on, then in twenty years there would be...probable minimum rate of natural increase : it will be under the mark to assume that it breeds when thirty years old, and goes on breeding till ninety years... | |
 | 1860 - 982 стор.
...twenty years there would ho ;x million plants. The elephant is reckoned to he the slowest breeder of alt known animals, and I have taken some pains to estimate...probable minimum rate of natural increase : it will bo under the mark to assume, that it breeds when thirty years old, and goes on breeding till ninety... | |
 | John Holmes Agnew, Walter Hilliard Bidwell, Henry T. Steele - 1860 - 612 стор.
...two seeds — and there is no plant so unproductive as this— and their seedlings next year produced two, and so on, then in twenty years there would be a million plants. The elephant is reckoned to be the slowest breeder of all known animals, and I have taken some pains to estimate its probable... | |
 | 1861 - 520 стор.
...seeds — " and there is no plant so unproductive " as this — and their seedlings next year "produced two, and so on, then in " twenty years there would...probable minimum rate of " natural increase. It will be under the "mark to assume that it breeds when " thirty years old, and goes on breeding ' until ninety... | |
 | 1861 - 788 стор.
...— " and there is no plant so unproductive " as this — and their seedlings next" year "produced two, and so on, then in " twenty years there would...probable minimum rate of " natural increase. It will be under the "mark to assume that it breeds when " thirty years old, and goes on breeding " until ninety... | |
 | 1861 - 562 стор.
...so unproductive as this — and their seedlings next year produced two seeds, and so on, in thirty years there would be a million plants. The elephant...all known animals, and I have taken some pains to calculate its probable minimum rate of natural increase ; it would be under the mark to assume that... | |
 | Charles Darwin - 1861 - 470 стор.
...seeds — and there is no plant so unproductive as this — and their seedlings next year produced two, and so on, then in twenty years there would be a million plants. The elephant is reckoned to be the slowest breeder of all known animals, and I have taken some pains to estimate its probable... | |
 | 1861 - 824 стор.
...seeds — and there is no plant so unproductive as this — and their seedlings next year produced two, and so on, then in twenty years there would be a million of plants. The elephant is reckoned to be the slowest breeder of all animals ; and I have taken some... | |
 | 1862 - 838 стор.
...seeds — and there is no plant so nnprodnctive as this — and their seedlings next year produced two, and so on, then in twenty years there would be...slowest breeder of all known animals, and I have taken Bome pains to estimate its probable minimum rate of natural increase. It will be under the mark to... | |
 | Charles Darwin - 1864 - 472 стор.
...seeds — and there is no plant so unproductive as this — and their seedlings next year produced two, and so on, then in twenty years there would be a million plants. The elephant is reckoned to be the slowest breeder of all known animals, and I have taken some pains to estimate its probable... | |
| |
