 I HAVE hitherto sometimes spoken as if the variations — so common and multiform in organic beings under domestication, and in a lesser degree in those in a state of nature — had been due to chance. This, of course, is a wholly incorrect expression,...  Nature - Side 247redigeret af - 1890Fuld visning - Om denne bog
 | 1896 - 588 sider
...over others.' * In accepting this conclusion, it must be borne in mind that Darwin felt constrained ' to acknowledge plainly our ignorance of ' the cause of each particular variation.' f The research he started carried us behind and beyond the evidence for historic variation. We are... | |
 | 1891 - 460 sider
...under nature, were due to chance. This, of course, is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation."» I have already quoted Lankester upon this principle and refer below to a passage in which he reiterates... | |
 | 1867 - 854 sider
...meaning of the law." •• This (chance) of course is a wholly incorrect expression, but it serves to acknowledge plainly our Ignorance of the cause of each particular variation." '• Why • • . . this or that part should vary more or jess, ire are profoundly ignorant ; nevertheless,... | |
 | Charles Darwin - 1861 - 470 sider
...nature — had been due to chance. This, of course, is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation. Some authors believe it to be as much the function of the reproductive system to produce individual... | |
 | Herbert Spencer - 1864 - 510 sider
...of nature—had been due to chance. This, of course, is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation." Not only, however, do I hold, in common with Mr Darwin, that there must be some cause for these apparently-spontaneous... | |
 | Herbert Spencer - 1864 - 506 sider
...nature — had been due to chance. This, of course, is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation." Not only, however, do I hold, in common with Mr Darwin, that there must be some cause for these apparently-spontaneous... | |
 | Charles Darwin - 1864 - 472 sider
...nature — had been due to chance. This, of course, is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation. Some authors believe it to be as much the function of the reproductive system to produce individual... | |
 | 1865 - 496 sider
...of the laws of variation is profound,' and that in speaking of them as due to chance, he means only 'to acknowledge plainly our ignorance of the cause of each particular variation.' Again he says, 'I believe in no law of necessary development.' His theory seems to be far better than... | |
 | George Douglas Campbell Duke of Argyll - 1867 - 490 sider
...laws of variation is profound;" and says, that in speaking of them as due to chance, he means only " to acknowledge plainly our ignorance of the cause of each particular variation."* Again he says — " I believe in no law of necessary development.'^ This distinction between Mr Darwin's... | |
 | 1867 - 548 sider
...the meaning of the law." " This (chance) of course is a wholly incorrect expression, but it serves to acknowledge plainly our ignorance of the cause of each particular variation." " Why .... this or that part should vary more or leas, we are profoundly ignorant ; nevertheless, we... | |
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