In his preface, after an apology for his performance, and making a declaration of his strict adherence to truth in all the particulars he relates, Cada Mosto gives some account of the infant Don Henriquez, or Henry, of Portugal, the great author and promoter of maritime discoveries. He praises him, as a prince of a great soul and sublime genius, and of great skill in astronomy; and adds, that he applied himself entirely to the service of Christ, by making war against the Moors. While on death- bed, in 1432, Don John, king of Portugal, exhorted his son Don Henry to pursue his laudable and holy purpose, of _persecuting_ the enemies of the Christian faith, which he promised to perform; and, accordingly, with the assistance of his brother Don Duarte, or Edward, who succeeded to the throne of Portugal, he made war in Fez with success for many years. Afterwards, the more effectually to harass the Moors, he used to send his caravels, or ships of war, annually, to scour the coasts of Azafi, or Al Saffi, and Messa, on the coast of Africa, without the Mediteranean, by which he did them much damage. But, having in view to make discoveries along that western coast, he ordered them every year to advance farther towards the south. They accordingly proceeded till they came to a great cape, which put a stop to their progress southwards for several years, being afraid to go beyond it; whence it took the name it still retains of Cape Non[2]; meaning, that such as went beyond should never return. Don Henry, however, was of a different opinion, and adding three other caravels to those which had been at the cape, sent them again next year to make the attempt. They accordingly penetrated about 100 miles beyond that cape, where they found only a sandy coast with no habitations, and returned back to Portugal. Encouraged by this commencement of successful progress, Don Henry sent the same fleet back next year, with orders to extend their discoveries 150 miles farther to the south, and even more if they found it proper; and promised to enrich all who should embark in this navigation. They went again; and, although they obeyed the instructions of the prince, they could not improve the discoveries. Yet, firmly persuaded by the strength of his own judgment, that people and habitations would certainly be found at length, Don Henry continued to send out his caravels from time to time, and they came at length to certain coasts frequented by the Arabs of the desert, and to the habitations of the Azanaghi, a tawny race. Thus the countries of the negroes were discovered; and different nations afterwards, which will be mentioned in the following relation.