 That during an immense, but unknown period, the surface of the earth has undergone successive changes ; land has sunk beneath the ocean, while fresh land has risen up from it; mountain chains have been elevated; islands have been formed into continents,...  Annals & Magazine of Natural History - Page 1841855Full view - About this book
 | Alfred Russel Wallace - 1871 - 412 lehte
...frequently been done) must lead to very imperfect and erroneous conclusions. The facts proved by geology are briefly these :— That during an immense, but...merely, but perhaps hundreds, perhaps thousands of times:—That all these operations have been more or less continuous, but unequal in their progress,... | |
 | Alfred Russel Wallace - 1891 - 516 lehte
...time nn means had been suggested by which the actual change of species could have been brought about. during an immense but unknown period the surface of...merely, but perhaps hundreds, perhaps thousands of times.— That all these operations have been more or less continuous but unequal in their progress,... | |
 | William H. Clarke - 1893 - 348 lehte
...the skillful prosecution of mining and other useful arts. JW Damon. The facts proved by geology are that during an immense but unknown period the surface...merely, but perhaps hundreds, perhaps thousands of times. AL Wallace. Prof. Dana says the " earth was first a featureless globe of fire ; then had its... | |
 | Alfred Russel Wallace - 2002 - 460 lehte
...frequently been done) must lead to very imperfect and erroneous conclusions. The facts proved by geology are briefly these:- That during an immense, but unknown...merely, but perhaps hundreds, perhaps thousands of times:- That all these operations have been more or less continuous, but unequal in their progress,... | |
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