 | 1886 - 400 หน้า
...the best. Mr: Wallace elsewhere justifies this limitation of the phrase by the following remark : " As the individual existence of each animal depends...weakest, the very young, the aged, and the diseased." " Every one for himself, and the devil take the hindmost" is, no doubt, a very mild corollary of the... | |
 | 1859 - 578 หน้า
...the same kind of food must diminish in proportion. The numbers that die annually must be immense ; and as the individual existence of each animal depends...young, the aged, and the diseased, — while those that prolong their existence can only be the most perfect in health and vigour — those who are best able... | |
 | Alfred Russel Wallace - 1870 - 458 หน้า
...the same kind of food must diminish in proportion. The numbers that die annually must be immense ; and as the individual existence of each animal depends upon itself, those that die must bo the weakest — the very young, the aged, and the diseased — while those that prolong their existence... | |
 | 1871 - 588 หน้า
...calculation, whatever be the average number of any species of bird in a given area, twice that number must perish annually, and as the individual existence of...existence can only be the most perfect in health and vigour—those that are best able to obtain food regularly and avoid their numerous enemies. It is... | |
 | Alfred Russel Wallace - 1871 - 434 หน้า
...requiring the same kind of food must diminish in proportion. The numbers that die annually must be immense; and as the individual existence of each animal depends upon itself, those that die must be the weakest—the very young, the aged, and the diseased—while those that prolong their existence can... | |
 | Alfred Russel Wallace - 1871 - 412 หน้า
...requiring the same kind of food must diminish in proportion. The numbers that die annually must be immense; and as the individual existence of each animal depends upon itself, those that die must be the weakest—the very young, the aged, and the diseased—while those that prolong their existence can... | |
 | Alfred Russel Wallace - 1891 - 516 หน้า
...the same kind of food must diminish in proportion. The numbers that die annually must be immense ; and as the individual existence of each animal depends...young, the aged, and the diseased — while those that prolong their existence can only be the most perfect in health and vigour — those who are best able... | |
 | Alfred Russel Wallace - 1891 - 516 หน้า
...requiring the same kind of food must diminish in proportion. The numbers that die annually must be immense; and as the individual existence of each animal depends upon itself, those that die must be the weakest—the very young, the aged, and the diseased—while those that prolong their existence can... | |
 | Charles Clement Coe - 1895 - 648 หน้า
...observed that co-operation prevents the elimination of the worst. The argument is sound which says that, " as the individual existence of each animal depends...young, the aged, and the diseased ; while those that prolong their existence can only be the most perfect in health and vigour." But by the same reasoning,... | |
 | 1902 - 584 หน้า
...requiring the same kind of food must diminish in proportion. The numbers that die annually must be immense; and as the individual existence of each animal depends...young, the aged, and the diseased, — while those that prolong their existence can only be the most perfect in health and vigor-pthose who are best able to... | |
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The numbers that die annually must be immense; and as the individual existence of each animal depends upon itself, those that die must be the weakest— the very young, the aged, and the diseased,— while those that prolong their existence can only be... 
