fine collection of maps and charts was of great service to Columbus, who now gave his attention to geographical studies more thoroughly than ever. He talked or corresponded with all the learned men of the day. He began to trace charts of his own, correcting the popular errors and traditions by the aid of his own greater knowledge and experience. Rumor, inspired by the stories of early adventures, had studded the far western ocean with wondrous islands, on one of which seven Christian bishops, fleeing from Pagan persecution, had founded seven splendid cities. There were tales of a lofty mountainous country to be seen on clear days far to the westward from the Canary Islands. Plato had told of the ancient continent of Atlantis, which had been sunk beneath the waves of the ocean. Marco Polo, the Venetian adventurer, had told of the great wealth of the East Indies, which he said could be reached by sailing westward from Europe. However much he discounted the more extravagant of these tales, Columbus was deeply impressed by them all. He became well convinced that far to the west there lay an unexplored region, probably a part of the East Indies, and he believed, with an intense religious zeal, that God had specially commissioned him to discover and explore it. Thereupon he consecrated the whole of his remaining life to the execution of this task. No hazard, nor obstacle, nor disappointment for a moment daunted him. He first applied to the Portuguese Court, stating the grounds of his belief in the existence of an undiscovered country in the western ocean, and asking for the means of ascertaining the truth of it. His proposition was received with indifference, and finally rejected under the influences of jealousy and intrigue. Then he returned to his native Genoa, and there sought the same aid and encouragement; but Genoa was already declining under the stress of domestic discord and foreign war, and was unable to do anything for him.