We have no relation of the particulars of this voyage, and only know that the first spot on which Diaz placed a stone pillar, in token of discovery and possession, was at _Sierra Parda_, in about 24°40'S. which is said to have been 120 leagues farther to the south than any preceding navigator. According to the Portuguese historians, Diaz sailed boldly from this place to the southwards, in the open sea, and never saw the land again until he was forty leagues to the east of the Cape of Good Hope, which he had passed without being in sight of land. The learned geographer, Major Rennel, informs us, that Sir Home Popham and Captain Thompson, while exploring the western coast of Africa in 1786, found a marble cross, on which the arms of Portugal were engraved, in latitude 26°37'S. near a bay named Angra Pequena: But, as the Portuguese long continued to frequent these coasts exclusively, and considered them all as belonging to their dominions under the papal grant, this latter cross, on which the inscription was not legible, may have been erected at a considerably subsequent period. At all events, the track of Diaz was far beyond the usual adventure of any former navigator, as he must have run a course of from seven to ten degrees of latitude, and at least between two or three degrees of longitude, in utterly unknown seas, without sight of land. The first land seen by Diaz is said to have been forty leagues to the eastward of the cape, where he came in sight of a bay on the coast, which he called _Angra de los Vaqueros_, or bay of herdsmen, from observing a number of cows grazing on the land. The distance of forty Portuguese leagues, would lead us to what is now called Struys bay, immediately east of Cabo das Agullias, which latter is in lat. 34° 50' S. and long. 20° 16' E. from Greenwich. From this place Diaz continued his voyage eastwards, to a small island or rock in the bay, which is now called Zwartkops or Algoa, in long. 27° E. on which rocky islet he placed a stone cross or pillar, as a memorial of his progress, and named it, on that account, Santa Cruz, or _El Pennol de la Cruz_. In his progress to this place from the Angra de los Vaqueros, he had set some Negroes on shore in different places, who had been brought from Portugal for this purpose, and who were well clothed, that they might be respected by the natives. These Negroes were likewise provided with small assortments of toys for bartering with the natives, and were especially charged to make inquiry as to the situation and distance of the dominions of Prester John. Of the fate of these Negroes we are nowhere informed, but may be well assured they would receive no intelligence respecting the subject of their inquiry, from the ignorant Hottentots and Caffres of Southern Africa.