 | 1876 - 1204 페이지
...degree from that of the parental tpye." (P. 12.) " Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parents." (P. 167.) And Mr. Darwin also recognises... | |
 | Robert Kemp Philp - 1860 - 360 페이지
...neither very swift nor very strong, will have been neglected, and will have tended to disappear.* 1153. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parents. But whenever we have the means of instituting... | |
 | 1860 - 966 페이지
...generally considered accidental. " Our ignorance (says Mr. Darwin) of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parent ;"* and again, " variation is a very slow process,... | |
 | Charles Darwin - 1861 - 470 페이지
...shells now living on the sea-shore. Swrmmoury. — Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parents. But whenever we have the means of instituting... | |
 | Charles Darwin - 1864 - 472 페이지
...shells now living on the sea-shore. Summary. — Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parents. But whenever we have the means ot instituting... | |
 | 1864 - 746 페이지
...(Summary of Chap. V.): — " Our ignorance of the laws of variation is profound. Not in one case out of » hundred can we pretend to assign any reason why this or that part varies more or less from the same part in the parents The external conditions of life, as climate and... | |
 | Charles Darwin - 1866 - 668 페이지
...reason why this or that part differs, more or less, from the same part in the parents. But whenever E 2 we have the means of instituting a comparison, the...greater differences between species of the same genus. The external conditions of life, as climate and food, &c., seem to have induced some slight modifications.... | |
 | 1909 - 826 페이지
...to this day a deep mystery. Darwin said of it: Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to...assign any reason why this or that part has varied." In another place he remarks : When we reflect on the millions of buds which many trees have produced... | |
 | 1909 - 838 페이지
...deep mystery. Darwin said of it: Our ignorance of the laws of variation is profound. Not in one ease out of a hundred can we pretend to assign any reason why this or that part has varied." In another place he remarks : When we reflect on the millions of buds which many trees have produced... | |
 | 1909 - 828 페이지
...deep mystery. Darwin said of it: Our ignorance of the laws of variation is profound. Not in one ease out of a hundred can we pretend to assign any reason why this or that part has varied.'1 In another place he remarks : When we reflect on the millions of buds which many trees have... | |
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Our ignorance of the laws of variation is profound. Not in one case out of a hundred can we pretend to assign any reason why this or that part differs, more or less, from the same part in the parents. 
