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" Consequently, if my theory be true, it is indisputable that before the lowest Silurian stratum was deposited, long periods elapsed, as long as, or probably far longer than, the whole interval from the Silurian age to the present day; and that during these... "
The Darwinian Theory of the Transmutation of Species - Page 170
by Robert Mackenzie Beverley - 1867 - 386 lehte
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The Canadian Journal of Industry, Science and Art, 5. köide

1860
...exclude it, what becomes of Mr. Darwin's theory ? " If my theory be true,' 1 writes Mr. Darwin—"it is indisputable that before the lowest Silurian stratum...interval from the Silurian age to the present day : aud that during these vast yet quite unknown periods of time, the world swarmed with living creatures."...
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Fraser's Magazine, 62. köide

1860
...probably differed greatly from any known animal. And again (p. 307)— If my theory be true, it is indisputable that before the lowest silurian stratum...periods elapsed, as long as, or probably far longer thaii, the whole interval from the silurian age to the present day ; and that during these vast yet...
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Crosthwaite's Register of facts and occurrences relating to literature, the ...

Crosthwaite and co - 1860
...Silurian deposits, is a still graver difficulty ; for, " if my theory be true," says Mr. Darwin, " it is indisputable that before the lowest Silurian stratum...deposited long periods elapsed, as long as, or probably longer than, the whole interval from the Silurian age to the present day ; and that during these vast...
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the journal of agriculture

robert scott burn - 1861
...frequently find Mr Darwin making such statements as the following : " If my tlreory he true, it is indisputable that before the lowest silurian stratum...of time, the world swarmed with living creatures. To the question why we do not find records of these vast primordial periods, I can give no satisfactory...
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On the Origin of Species by Means of Natural Selection; Or, The Preservation ...

Charles Darwin - 1861 - 440 lehte
...and exterminted by their numerous and improved descendants. Consequently, if my theory be true, it is indisputable that before the lowest Silurian stratum...of time, the world swarmed with living creatures. To the question why we do not find records of these vast primordial periods, I can give no satisfactory...
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The Geologist, 4. köide

Samuel Joseph Mackie - 1861
...true, then before the deposition of the lowest Silurian strata there elapsed periods of time " probably longer than the whole interval from the Silurian age to the present day," during which " the world swarmed with living creatures ;" and I put to Lieutenant Hutton the question...
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Seven Answers to the Seven Essays and Reviews

John Nash Griffin - 1862 - 312 lehte
...link, shows that it is not taking place. Mr. Darwin admits that if his hypothesis be true, " *It is indisputable that, before the lowest Silurian stratum...age to the present day, and that during these vast and quite unknown periods of time, the world swarmed with living creatures ;" though while making this...
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Man, Or, The Old and New Philosophy: Being Notes and Facts for the Curious ...

Bourchier Wrey Savile - 1863 - 296 lehte
...verbis. " If my theory be true," he observes, in his masterly work " On the Origin of Species," " it is indisputable that before the lowest Silurian stratum...elapsed, — as long as, or probably far longer than, the Silurian age to the present day; and that, during these vast, yet quite unknown periods of time, the...
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On the Origin of Species by Means of Natural Selection: Or, The Preservation ...

Charles Darwin - 1864 - 440 lehte
...and exterminted by their numerous and improved descendants. Consequently, if my theory be true, it is indisputable that before the lowest Silurian stratum...of time, the world swarmed with living creatures. To the question why we do not find records of these vast primordial periods, I can give no satisfactory...
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The baptist Magazine

1865
...Silurian deposits, is a most serious difficulty. For, " if my theory be true," continues Darwin, " it is indisputable that before the lowest Silurian stratum...deposited long periods elapsed, as long as, or probably longer, than the whole interval from the Silurian age to the present day ; and that during these vast...
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