Science, Том 14John Michels (Journalist) American Association for the Advancement of Science, 1889 |
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Стр. 151
... natural selection has been the chief , but not the only , cause of organic evolution ; while , in the opinion of Mr. Wal- lace , natural selection has been the all and in all of such evolution , virtually the sole and only principle ...
... natural selection has been the chief , but not the only , cause of organic evolution ; while , in the opinion of Mr. Wal- lace , natural selection has been the all and in all of such evolution , virtually the sole and only principle ...
Стр. 152
... natural selection is always , so to speak , waiting and watching . The human hand , for example , considered as a mechanism , owes nothing to its continued use through numberless generations as an instrument for the perform- ance of ...
... natural selection is always , so to speak , waiting and watching . The human hand , for example , considered as a mechanism , owes nothing to its continued use through numberless generations as an instrument for the perform- ance of ...
Стр. 154
... natural selection they could never have an opportunity of acting , inasmuch as the needful changes would be effected by a natural selection of fortuitous variations more rapidly than they could be by an inheritance of the effects of use ...
... natural selection they could never have an opportunity of acting , inasmuch as the needful changes would be effected by a natural selection of fortuitous variations more rapidly than they could be by an inheritance of the effects of use ...
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A WEEKLY NEWSPAPER OF ALL THE ARTS AND SCIENCES | 35 |
Subscriptions United States and Canada | 60 |
Communications will be welcomed from any quarter Rejected manuscripts will | 236 |
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