We have mentioned that all the men who had a scientific interest in navigation tried to get to Lisbon. Among those whom Columbus may have met there, was the great German cosmographer from Nuremburg, Martin Behaim. Martin helped to improve the old-fashioned astrolabe, an instrument for taking the altitude of the sun; more important still, toward the end of 1492 he made the first globe, and indicated on it how one might sail west and reach Asiatic India. This is the first record of that idea which was later attributed to Columbus, but which Columbus himself, until his return from his first voyage of discovery, never even mentioned. Whether he and Martin Behaim talked together about the route to India we shall never know. Probably they did not; for when Christopher importuned later for ships, it was only for the purpose of discovering "lands in the west" and not for finding a short route to India. Columbus, though he knew how to draw maps and design spheres, really possessed but little scientific knowledge. Intuition, plus tenacity, always did more for him than science; and so it is likely that he talked more with sailors than with scientists. While he may have known the learned Behaim, certain it is that, from his earliest days in Lisbon, he sought the society of men who had been out to the Azores or to Madeira; men who told him the legends, plentiful enough on these islands, of lands still farther out toward the setting sun, that no one had yet ventured to visit. CHAPTER IV THE SOJOURN IN MADEIRA Columbus had not been very long in Lisbon when he met, at church, a girl named Felipa Monez Perestrello. Felipa was of noble birth; Christopher was not; but he was handsome--tall, fair-haired, dignified,--and full of earnestness in his views of life. Felipa consented to marry him. Felipa must have been a most interesting companion for a man who loved voyaging, for she had been born in the Madeiras. Her father, now dead, had been appointed governor, by Prince Henry, of a little island called Porto Santo, and Felipa and her mother (with whom the young couple went to live) had many a tale to tell about that far outpost of the Atlantic. This is probably what set Christopher yearning for the sea; and so, about 1479, he and his wife and her mother, Senora Perestrello, all sailed off for Porto Santo. The Senora must have liked her new son-in- law's enthusiasm for the sea, for she gave him the charts and instruments that had belonged to her husband; but as Governor Perestrello had never been a navigator, these could not have been either very numerous or very helpful. From Porto Santo, Columbus made a voyage to Guinea and back; and after that he and his family went to live on the larger island of Madeira. There, according to many men who knew Columbus well, the following event happened.