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 Rh ined a country named Atlantis, far out in the Indian Ocean, where men were provided with all the gifts of nature. These views of the ancients came once more to the attention of the learned, owing to the invention of printing and the revival of learning, when the Greek masterpieces began to be made accessible in Latin, chiefly by fugitive Greeks from Constantinople, which had been taken by the Turks in 1453. Ptolemy's geography was printed at Rome in 1462, and with maps in 1478. But even without the maps the calculation which he had made of the length of the known world tended to shorten the distance between Portugal and Farther India by 2500 miles. Since his time the travels of Marco Polo had added to the knowledge of Europe the vast extent of Cathay and the distant islands of Zipangu (Japan), which would again reduce the distance by another 1500 miles. As the Greek geographers had somewhat under-estimated the whole circuit of the globe, it would thus seem that Zipangu was not more than 4000 miles to the west of Portugal. As the Azores were considered to be much farther off from the coast than they really were, it might easily seem, to an enthusiastic mind, that Farther India might be reached when 3000 miles of the ocean had been traversed.

This was the notion that seized the mind of Christopher Columbus, born at Genoa in 1446, of humble parentage, his father being a weaver. He seems to have obtained sufficient knowledge to enable him to study the works of the learned, and of the ancients in Latin translations. But in his early years he devoted his attention to obtaining a practical acquaintance with seamanship. In his day, as we have seen, Portugal was the