According to ancient and modern cosmographers, that part of the world called Asia has adjacent to it a multitude of greater and lesser islands, inhabited by various nations and peoples, and as rich in precious stones, gold, silver, and other minerals, as they abound in fruit and grain, flocks, and animals. Some of the islands yield all kinds of spices which are carried away and distributed throughout the world. These islands are commonly designated in their books, descriptions, and sea-charts, as the great archipelago of San Lazaro, and are located in the eastern ocean. Among the most famous of them are the islands of Maluco, Céleves, Tendaya, Luzon, Mindanao, and Borneo, which are now called the Filipinas. When Pope Alexander the Sixth divided the conquests of the new world between the kings of Castilla and of Portugal, the kings agreed to make the division by means of a line drawn across the world by the cosmographers, so that they might continue their discoveries and conquests, one toward the west and the other toward the east, and pacify whatever regions each might gain within his own demarcation. After the crown of Portugal had conquered the city of Malaca, on the mainland of Asia, in the kingdom of Jor [Johore]--called by the ancients Aurea Chersonesus--a Portuguese fleet, in the year one thousand five hundred and eleven, on hearing of neighboring islands and especially of those of Maluco and Banda, where cloves and nutmegs are gathered, went to discover them. After touching at Banda, they went to Terrenate, one of the islands of Maluco, at the invitation of its king, to defend him against his neighbor, the king of Tidore, with whom he was at war. This was the beginning of the Portuguese settlement in Maluco. Francisco Serrano, who after this discovery returned to Malaca, and thence went to India with the purpose of going to Portugal to give an account of the discovery, died before he had accomplished this voyage, but not, however, without having communicated in letters to his friend, Fernando de Magallanes, what he had seen; [9] for they had been together at the taking of Malaca, although the latter was then in Portugal. From this relation, Magallanes learned whatever was necessary for the discovery and navigation of these islands. [10] At this time, Magallanes, who for certain reasons had entered the service of the king of Castilla, told the emperor Cárlos V, our sovereign, that the islands of Maluco fell within the demarcation of the latter's crown of Castilla, and that their conquest belonged to him, according to the concessions made by Pope Alexander; moreover, he offered to make the expedition and navigation to the islands in the emperor's name, by sailing through that part of the demarcation belonging to Castilla, and by availing himself of a famous astrologer and cosmographer, named Ruyfarelo [sic], whom he had with him.