. The earth and its inhabitants ... th of hundreds of fathoms ? Is it not that its very depth savedit from becoming the depository of glacial drift ? The glaciers carried south-ward by currents and northerly winds may be supposed to have stranded onlyafter they had reached the shallower waters of the North Sea, when, meltingunder the influence of the sun, they deposited upon its bottom the débris theycarried. The Strait of Dover, which joins the North Sea to the English Channel, has awidth of only 20 miles, and in depth nowhere exceeds 180 feet. The navigation is* Annales Hydrographiques, 4e t
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. The earth and its inhabitants ... th of hundreds of fathoms ? Is it not that its very depth savedit from becoming the depository of glacial drift ? The glaciers carried south-ward by currents and northerly winds may be supposed to have stranded onlyafter they had reached the shallower waters of the North Sea, when, meltingunder the influence of the sun, they deposited upon its bottom the débris theycarried. The Strait of Dover, which joins the North Sea to the English Channel, has awidth of only 20 miles, and in depth nowhere exceeds 180 feet. The navigation is* Annales Hydrographiques, 4e trimestre, 1873. 6 THE BRITISH ISLES. not without danger, owing to conflicting currents and the sand-banks which cumberthe approaches. The most famous of these banks are the Goodwins, off the coastof Kent, within which lies the roadstead called the Downs, a great resort of vesselswaiting for favourable winds and tides. The English Channel gradually increases Fig. 3.—The Iuish Sea.From an Adiniviilty Chart. Scale 1 : 795, 000. 65«. 4-5 yr Kti 9