Nearly twenty years elapse before any further attempt of importance is made to secure possession of the Philippine Archipelago. In 1564 this is begun by the departure from New Spain of an expedition commanded by Miguel Lopez de Legazpi, with which enterprise begins the real history of the Philippine Islands. Synopses of many contemporaneous documents are here presented, covering the years 1559-68. This undertaking has its inception in the commands of Felipe II of Spain (September 24, 1559) to his viceroy in New Spain (now Luis de Velasco) to undertake "the discovery of the western islands toward the Malucos;" but those who shall be sent for this are warned to observe the Demarcation Line. The king also invites Andrés de Urdaneta, now a friar in Mexico, to join the expedition, in which his scientific knowledge, and his early experience in the Orient, will be of great value. Velasco thinks (May 28, 1560) that the Philippines are on the Portuguese side of the Demarcation Line, but he will follow the royal commands as far as he safely can. He has already begun preparations for the enterprise, the purpose of which he is keeping secret as far as possible. By the same mail, Urdaneta writes to the king, acceding to the latter's request that he accompany the proposed expedition. He emphasizes the ownership of "the Filipina Island" (meaning Mindanao) by the Portuguese, and thinks that Spanish ships should not be despatched thither without the king's "showing some legitimate or pious reason therefor." Velasco makes report (February 9, 1561) of progress in the enterprise; the ships have been nearly built and provisioned, and Legazpi has been appointed its general. Urdaneta advises (also in 1561) that Acapulco be selected for their embarcation, as being more convenient and healthful than Navidad. He makes various other suggestions for the outfit of the expedition, which show his excellent judgment and practical good sense; and asks that various needed articles be sent from Spain. He desires that the fleet depart as early as October, 1562. Legazpi in a letter to the king (May 26, 1563) accepts the responsibility placed upon him, and asks for certain favors. Velasco explains (February 25 and June 15, 1564) the delays in the fleet's departure; he hopes that it will be ready to sail by the following September, and describes its condition and equipment. Velasco's death (July 31) makes it necessary for the royal _Audiencia_ of Mexico to assume the charge of this enterprise. Their instructions to Legazpi (September 1, 1564) are given in considerable detail. Especial stress is laid on the necessity of discovering a return route from the Philippines; and Urdaneta is ordered to return with the ships sent back to New Spain for this purpose. By a letter dated September 12, the members of the _Audiencia_ inform the king of the instructions they have given to Legazpi, and their orders that he should direct