| 1871
...show that in fifteen years, each pair of birds would have increased to nearly two thousand millions ! **Whereas we have no reason to believe that the number...of increase, the population must have reached its** limn-. and have become stationary, in a very few years after the origin of each species. An immense... | |
| Sir Charles Lyell - 1868 - 671 lehte
...four times in their life, each would at this rate increase in fifteen years to nearly ten millions, **whereas we have no reason to believe that the number...birds of any country increases at all in fifteen or** even in 150 years. It is evident, therefore, that each year an immense number of birds must perish,... | |
| Alfred Russel Wallace - 1870 - 384 lehte
...This is under estimated. The number would really amount to more than two thousand millions! crease **the population must have reached its limits, and have...therefore, that each year an immense number of birds must** perish — as many in fact as are born ; and as on the lowest calculation the progeny are each year... | |
| Alfred Russel Wallace - 1870 - 384 lehte
...fifteen years each pair of birds would have increased to nearly ten millions ! * whereas wo haveno **reason to believe that the number of the birds of...in one hundred and fifty years. With such powers of** in* This is under estimated. The number would really amount to more than two thousand millions! crease... | |
| Alfred Russel Wallace - 1871
...will show that in fifteen years each pair of birds would have increased to nearly ten millions ! * **whereas we have no reason to believe that the number...in one hundred and fifty years. With such powers of** in* This is under estimated. The number would really amount to more than two thousand millions I crease... | |
| Henry Coke - 1883
...only in their lives. In fifteen years the numbers would amount to more than two thousand millions. **"Whereas we have no reason to believe that the number...all in fifteen or in one hundred and fifty years."** He also distinctly enunciated the principle of natural selection. Speaking of the tendency of useful... | |
| 1902
...calculation will show that in fifteen years each pair of birds would have increased to nearly ten millions! **whereas we have no reason to believe that the number...therefore, that each year an immense number of birds must** perish — as many in fact as are born; and as on the lowest calculation the progeny are each year... | |
| Arthur Dendy - 1912 - 454 lehte
...calculation will show that in fifteen years each pair of birds would have increased to nearly ten millions ! **Whereas we have no reason to believe that the number...therefore, that each year an immense number of birds must** perish — as many in fact as are born. . . . It is, as we commenced by remarking, ' a struggle for... | |
| Edward Newman, James Edmund Harting - 1858
...calculation will show that in fifteen years each pair of birds would have increased to nearly ten millions ! **whereas we have no reason to believe that the number...therefore, that each year an immense number of birds must** perish — as many in fact as are born ; and as on the lowest calculation the progeny are each year... | |
| C. Leon Harris - 1981 - 339 lehte
...would have increased to nearly ten millions! whereas we have no reason to believe that the number of **birds of any country increases at all in fifteen or...a very few years after the origin of each species.** lt is evident, therefore, that each year an immense number of birds must perish — as many in fact... | |
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