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Any one who has been on the Rhine will have observed operations not unlike those to which we have just referred; and, indeed, most of the rivers of Europe flowing among their own alluvia have required similar treatment in the interest of navigation and agriculture. The levee is the crowning work of bank revetment, although not necessarily in immediate connection.
From what we now know of the occurrence of human remains and works of art in other parts of France and Europe, no surprise need be felt at the occurrence of human remains in company with some extinct mammalia in these volcanic tuffs, which belong to the Post-Pliocene or superficial alluvia antecedent to the historic period.
Any one who has been on the Rhine will have observed operations not unlike those to which we have just referred; and, indeed, most of the rivers of Europe flowing among their own alluvia have required similar treatment in the interest of navigation and agriculture. The levee is the crowning work of bank revetment, although not necessarily in immediate connection.
Earthly deposits probably completed the disaster there were, it is said, both earthquakes and inundations and the soil was ever rising, the alluvia of the young Christian world buried the ancient pagan society.
The young man had not walked more than five minutes before he recognized the correctness of the directions he had received. The ground which he had passed over was a field covered with clumps of low trees; it was easy to see by its disc-like shape that it had been formed by successive alluvia, at the expense of the other shore, which had been incessantly worn away by the stream.
Near Orange, for instance, her favourite spots are the alluvia of the Aygues, with their carpets of smooth pebbles no longer visited by the waters. Lastly, if a cobble be wanting, the Mason-bee will establish her nest on any sort of stone, on a mile-stone or a boundary-wall. The Sicilian Chalicodoma has an even greater variety of choice.
This bank consists of alluvia, or large heaps of organic matter, brought either from the Equator by the Gulf Stream, or from the North Pole by the counter-current of cold water which skirts the American coast. There also are heaped up those erratic blocks which are carried along by the broken ice; and close by, a vast charnel-house of molluscs, which perish here by millions.
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