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" The short period of time that mankind seem to have been capable of correct observation, and the minute segment of the immense circle of nature's operations, that has revolved during the comparatively short period, renders all speculations on the origin... "
Observations on the Geology of the United States of America: With Some ... - Página 14
por William Maclure - 1817 - 127 páginas
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North American Mesozoic and Cænozoic Geology and Palæontology; Or, An ...

Samuel Almond Miller - 1881 - 354 páginas
...observation, and not through the imagination, that a knowledge of Geology can be acquired. He said : "The short period of time that mankind seem to have...Were it possible to separate this metaphysical part, from the collection and classification of facts, the truth and accuracy of observation would be much...
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Transactions, American Philosophical Society (vol. 1, 1818)

528 páginas
...seems to arise out of the method of examining minutely a small portion, or part of one range B • of mountains, and that is the formation of a system...Were it possible to separate this metaphysical part from the collection and classification of facts, the truth and accuracy of observation would be much...
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