| American Association for the Advancement of Science - 1894 - 516 pages
...imperfections of the geological record Darwin concludes that, if his theory of the origin of species is true, "it is indisputable that before the lowest Cambrian...deposited, long periods elapsed, as long as, or probably fur longer than, the whole interval from the Cambrian age to the present day ; and that daring these... | |
| 1860 - 612 pages
..." If my theory be true,' 1 writes Mr. Darwin—"it is indisputable that before the lowest Silurian stratum was deposited, long periods elapsed, as long...probably far longer, than the whole interval from the Silurian age to the present day : aud that during these vast yet quite unknown periods of time, the... | |
| 1860 - 860 pages
...animal. And again (p. 307)— 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 thaii, the whole interval from the silurian age to the present day ; and that during these vast yet... | |
| robert scott burn - 1861 - 738 pages
...statements as the following : " If my tlreory he true, it is indisputable that before the lowest silurian stratum was deposited long periods elapsed, as long...probably far longer than, the whole interval from the silurian age to the present day; and that, during these vast, yet quite unknown periods of time, the... | |
| Charles Darwin - 1861 - 470 pages
...descendants. Consequently, if my theory be true, it is indisputable that before the lowest Silurian stratum was deposited, long periods elapsed, as long...probably far longer than, the whole interval from the Silurian age to the present day ; and that during these vast, yet quite unknown, periods of time, the... | |
| John Nash Griffin - 1862 - 354 pages
...Darwin admits that if his hypothesis be true, " *It is indisputable that, before the lowest Silurian stratum was deposited, long periods elapsed, as long...probably far longer, than the whole interval from the Silurian age to the present day, and that during these vast and quite unknown periods of time, the... | |
| William Lonsdale Watkinson, William Theophilus Davison - 1873 - 552 pages
...system, down through the carboniferous, to the Cambrian ! And yet he says, "if the theory be true, it is indisputable that before the lowest Cambrian...deposited long periods elapsed, as long as or probably longer than the whole internal from the Cambrian age to the present day."t Now it is well known that,... | |
| Bourchier Wrey Savile - 1863 - 338 pages
...his masterly work " On the Origin of Species," " it is indisputable that before the lowest Silurian stratum was deposited, long periods 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... | |
| Charles Darwin - 1864 - 472 pages
...descendants. Consequently, if my theory be true, it is indisputable that before the lowest Silurian stratum was deposited, long periods elapsed, as long...probably far longer than, the whole interval from the Silurian age to the present day ; and that during these vast, yet quite unknown, periods of time, the... | |
| Robert Mackenzie Beverley - 1867 - 424 pages
...testimony of geology. 'If my Theory be true,' says he, 'it is indisputable that before the lowest Silurian stratum was deposited, long periods elapsed, as long...probably far longer than the whole interval from the Silurian age to the present day ; and that during these vast, yet quite unknown periods of time, the... | |
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