This achievement of Gil Eannes (_anglice_, plain Giles Jones) marks an era. It was the beginning of great things. When we think of the hesitation with which this step was taken, and the vociferous applause that greeted the successful captain, it is strange to reflect that babes were already born in 1435 who were to live to hear of the prodigious voyages of Columbus and Gama, Vespucius and Magellan. After seven years a further step was taken in advance; in 1442 Antonio Goncalves brought gold and negro slaves from the Rio d' Ouro, or Rio del Oro, four hundred miles beyond Cape Bojador. Of this beginning of the modern slave-trade I shall treat in a future chapter.[386] Let it suffice here to observe that Prince Henry did not discourage but sanctioned it. The first aspect which this baleful traffic assumed in his mind was that of a means for converting the heathen, by bringing black men and women to Portugal to be taught the true faith and the ways of civilized people, that they might in due season be sent back to their native land to instruct their heathen brethren. The kings of Portugal should have a Christian empire in Africa, and in course of time the good work might be extended to the Indies. Accordingly a special message was sent to Pope Eugenius IV., informing him of the discovery of the country of these barbarous people beyond the limits of the Mussulman world, and asking for a grant in perpetuity to Portugal of all heathen lands that might be discovered in further voyages beyond Cape Bojador, even so far as to include the Indies.[387] The request found favour in the eyes of Eugenius, and the grant was solemnly confirmed by succeeding popes. To these proceedings we shall again have occasion to refer. We have here to observe that the discovery of gold and the profits of the slave-trade--though it was as yet conducted upon a very small scale--served to increase the interest of the Portuguese people in Prince Henry's work and to diminish the obstacles in his way. A succession of gallant captains, whose names make a glorious roll of honour, carried on the work of exploration, reaching the farthest point that had been attained by the ancients. In 1445 Dinis Fernandez passed Cape Verde, and two years later Lancarote found the mouth of the Gambia. In 1456 Luigi Cadamosto--a Venetian captain in the service of Portugal--went as far as the Rio Grande; in 1460 Diego Gomez discovered the Cape Verde islands; and in 1462 Piedro de Cintra reached Sierra Leone.[388] At the same time, in various expeditions between 1431 and 1466, the Azores (i. e. "Hawk" islands) were rediscovered and colonized, and voyages out into the Sea of Darkness began to lose something of their manifold terrors. [Footnote 386: See below, vol. ii. pp. 429-431.]