 | Friedrich Albert Lange - 1881 - 390 頁
...nestlings, are destroyed by birds and beasts of prey ; we do not always bear in mind that although food may be now superabundant, it is not so at all seasons of each recurring year." The struggle for a spot of earth, success or non-success in the persecution and extermination of other... | |
 | Charles Darwin - 1882 - 492 頁
...which are idly singing round us mostly live on insects or seeds, and are thus constantly destroy it g life ; or we forget how largely these songsters, or...their eggs, or their nestlings, are destroyed by birds iad beasts of prey; we do not always bear in mind, that, though food may be now superabundant, it is... | |
 | Charles Darwin - 1884 - 494 頁
...the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters,...their eggs, or their nestlings, are destroyed by birds ind beasts of prey; we do not always bear in mind, that, though food may be now superabundant, it is... | |
 | 1881 - 340 頁
...the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters,...it is not so at all seasons of each recurring year A struggle for existence inevitably follows from the high rate at which all organic beings tend to... | |
 | George Thomas Bettany - 1887 - 224 頁
...the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters,...is not so at all seasons of each recurring year." The proofs given of the enormous rate at which animals and plants tend to increase in numbers are very... | |
 | Charles Darwin - 1889 - 446 頁
...the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters,...food may be now superabundant, it is not so at all se;isons of each recurring year. The Term, Struggle for Existence, used in a large sense. • I should... | |
 | Asa Gray - 1889 - 422 頁
...singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forgot how largely these songsters, or their eggs, or their...is not so at all seasons of each recurring year." — (p. 62.) "There is no exception to the rule that every organic being naturally increases at so... | |
 | William Mackintire Salter - 1889 - 566 頁
...the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters,...We do not always bear in mind that though food may now be superabundant, it is not so at all seasons of each year. ... I estimated," he says again, "... | |
 | Georg von Giźycki - 1889 - 324 頁
...the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget how largely these songsters,...their eggs, or their nestlings, are destroyed by birds or beasts of prey ; we do not always bear in mind that though food may now be superabundant, it is... | |
 | Alfred Williams Momerie - 1889 - 332 頁
...are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; we forget how largely these songsters or their eggs or their nestlings are destroyed by other birds or by beasts of prey." Xo satisfactory explanation of this can be given. It used to be... | |
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We behold the face of nature bright with gladness, we often see superabundance of food ; we do not see, or we forget, that the birds which are idly singing round us mostly live on insects or seeds, and are thus constantly destroying life ; or we forget... 
