He was engaged in exploring new regions; his time was occupied in noting the salient features of the scenery, the traits of the barbaric peoples, and especially closely observing and enumerating the stars. Astronomy was a passion with him, and he passed many nights without sleep, during both voyages to the southern hemisphere, in rapt contemplation of the glorious constellations. As he rightly observed in one of his letters, his observations would surely bring him fame, and no worthier object could claim his attention, even to the exclusion of all other work. So it is as the self-absorbed astronomer, the open-minded man of science, seeking to penetrate the secrets of nature and achieve immortal fame, that we must regard our hero at this time. On his return from the third voyage, Vespucci was royally received by King Emanuel, even though he had come back almost empty-handed, without gold or gems, silver, spices, or pearls. He had sailed farther south than any of his predecessors, having gone beyond the latitude of the Cape of Good Hope, discovered the beautiful bay which he called Rio de Janeiro, and perhaps looked into the mouth of the River de la Plata. He had not discovered the "secret of the strait"--that passage through the land-mass which confronted all the voyagers from Columbus to Magellan; nor was it revealed until the last-named, in 1520, penetrated the great strait that now bears his name, and sailed through into the Pacific. It may be argued that not Vespucci, but another (name unknown), was the commander of this expedition; but while this other was nominally in command, the Florentine was the chief pilot, the navigator, and directed the ships along their courses without mishap. In fact, one of his biographers has pointed out that the navigating of this fleet, especially the sailing in almost a straight line from the northern coast of Brazil to Sierra Leone, on the northwest coast of Africa, was a triumph of scientific navigation. There is no question that Amerigo Vespucci was the greatest navigator of his time, and a recognition of this fact is found in his appointment by King Ferdinand, a few years later, as the chief pilot of his kingdom. Not alone King Emanuel and his court recognized the genius of Vespucci, but the people of Portugal and of Florence. He was received in Lisbon with transports of enthusiasm, and one of his ships, which had worn itself out in the voyage, was dismantled, "and portions of it were carried in solemn procession to a church, where they were suspended as precious relics." His fame extended far and wide, and in Florence, the city of his birth, public ceremonies were held, and honors bestowed upon his family.