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THE STORY OF GEOGRAPHICAL DISCOVERY.
Marco Polo's is thus one of the greatest names in the history of geography; it may, indeed, be doubted whether any other traveller has ever added so extensively to our detailed knowledge
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Fra Mauro's map, 1457.
of the earth's surface. Certainly up to the time of Mr. Stanley no man had on land visited so many places previously unknown to civilised Europe. But the lands he discovered, though already fully populated, were soon to fall into disorder, and to be closed to any civilising influences. Nothing for a long time followed from these dis-
