Page:Cape Cod (1865) Thoreau.djvu/157

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THE HIGHLAND LIGHT.
143

but easier when it blowed off. This undertow, meeting the next surface wave on the bar which itself has made, forms part of the dam over which the latter breaks, as over an upright wall. The sea thus plays with the land holding a sand-bar in its mouth awhile before it swallows it, as a cat plays with a mouse; but the fatal gripe is sure to come at last. The sea sends its rapacious east wind to rob the land, but before the former has got far with its prey, the land sends its honest west wind to recover some of its own. But, according to Lieutenant Davis, the forms, extent, and distribution of sand-bars and banks are principally determined, not by winds and waves, but by tides.

Our host said that you would be surprised if you were on the beach when the wind blew a hurricane directly on to it, to see that none of the drift-wood came ashore, but all was carried directly northward and parallel with the shore as fast as a man can walk, by the inshore current, which sets strongly in that direction at flood tide. The strongest swimmers also are carried along with it, and never gain an inch toward the beach. Even a large rock has been moved half a mile northward along the beach. He assured us that the sea was never still on the back side of the Cape, but ran commonly as high as your head, so that a great part of the time you could not launch a boat there, and even in the calmest weather the waves run six or eight feet up the beach, though then you could get off on a plank. Champlain and Pourtrincourt could not land here in 1606, on account of the swell (la houlle), yet the savages came off to them in a canoe. In the Sieur de la Borde's "Relation des Caraibes," my edition of which was published at Amsterdam in 1711, at page 530 he says:—