These attempts of the Portuguese had been continued for nearly fourscore years before any of their neighbours seem to have entertained the most distant idea of engaging in foreign discoveries, even viewing their endeavours as downright knight-errantry, proceeding from a distempered imagination, as well in the first promoter as in those who continued to prosecute his scheme. In a word, the relation of these discoveries forms one of the most curious portions of modern history, as comprizing a great number of the most extraordinary transactions that ever happened in any period of the world. For this reason they are well worthy of being particularly narrated, that the curious may be made acquainted with every successive step in such important enterprizes, and by what almost insensible degrees such vast undertakings were ultimately accomplished. And as the intercourse of Europeans has operated a great change in the countries to which they penetrated, and upon their original inhabitants, so that both now appear in a very different light from what they did before these expeditions and discoveries; therefore, every circumstance belonging to these transactions deserves the most serious notice. John 1. of Portugal, married Philippa, the eldest daughter of John of Gaunt, Duke of Lancaster, son to Edward III. of England, by whom he had several sons, of whom Don Henry was the _fifth_. After serving with great bravery under his father at the capture of Ceuta, he was raised to the dukedom of Viseo, and was sent back with a large reinforcement to preserve the conquest to which his courage had largely contributed. During his continuance in command at Ceuta, he acquired much information, by occasional converse with some Moors, relative to the seas and coasts of Western Africa, which raised and encouraged the project of maritime discoveries; and these became afterwards the favourite and almost exclusive pursuit of his active and enlarged mind. From the Moors he obtained intelligence respecting the Nomadic tribes who border upon and pervade the great desert, and of the nations of the Jaloofs, whose territories are conterminous with the desert on the north, and Guinea to the south. By one ingenious author[2], he has been supposed instigated to his first attempts at maritime discovery, by the desire of finding a way by sea to those countries from whence the Moors brought ivory and gold dust across the desert. It unfortunately happens that we have no record of the particular voyages themselves, and are therefore reduced to the necessity of giving the relation of this great discovery historically from the best remaining sources of information. The writings of Cada Morto, which will be found in the sequel, form a pleasing exception to this desideratum in the history and progress of early navigation and discovery. [1] Astley. I. 9. Clarke, I. 140. Purchas, I. 6. Harris, I. 662. [2] Wealth of Nations, II. 347. SECTION I.