Principles of Geology Being An Attempt to Explain the Former Changes of the Ear
Principles of Geology Being An Attempt to Explain the Former Changes of the Ear
Charles Lyell
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If we possessed an accurate series of maps of the Adriatic for many thousand years, our retro- spect would, without doubt, carry us gradually back to the time when the number of rivers descending from the moun- tains into that gulf by independent deltas, was far greater in number. The deltas of the Po and the Adige, for instance, would separate themselves within the human era, as, in all pro- bability, would those of the Isonzo and the Torre. If, on the other hand, we speculate on future change...s, we may anticipate the period when the number of deltas will greatly diminish ; for the Po cannot continue to encroach at the rate of a mile in a century, and other rivers to gain as much in six or seven centuries upon the shallow gulf, without new junctions occur- ring from time to time, so that Eridanus, ' the king of rivers, ' will continually boast a greater number of tributaries. The Ganges and Burrampooter have probably become confluent within the historical era; and the date of the junction of the Red River and the Mississippi would, in all likelihood, have been known, if America had not been so recently discovered.
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