Here an important observation must be made, showing the state of geographical knowledge at this period: viz. that Columbus now believed himself to have arrived at Asia, Cipango being the name given by Marco Polo to Japan. This error of the admiral, shared in by all his companions, was not rectified for many years afterwards, and thus, as we have already remarked, the great navigator after four successive voyages to the islands, died, without knowing that he had discovered a new world. It is beyond doubt that the sailors of Columbus, and Columbus himself, imagined that they had arrived, during that night of the 12th October, 1492, either at Japan, or China, or the Indies. This is the reason why America so long bore the name of the "Western Indies," and why the aborigines of this continent, in Brazil and in Mexico, as well as in the United States, are still classed under the general appellation of "Indians." So Columbus dreamt only of reaching the shores of Japan. He coasted along San Salvador, exploring its western side. The natives, running down to the shore, offered him water and cassava bread, made from the root of a plant called the "Yucca." Several times the admiral landed upon the coast at different points, and with a sad want of humanity, he carried away some of the natives, that he might take them with him to Spain. Poor men! already the strangers began to tear them from their country; it would not be long before they began to sell them! At last the caravels lost sight of San Salvador, and were again upon the wide ocean.