A letter by Fernando VI to the Manila Audiencia (November 7, 1751) expresses his approval of the proceedings of Auditor Enriquez in pacifying the insurgent Indians of certain villages near Manila and in Bulacan--a revolt caused by the usurpation of Indian lands by the managers of the friar estates, and the fraudulent proceedings of government officials who aided such usurpation. Enriquez had pacified the natives, deprived the friars of such lands as they held illegally, and distributed these among those natives who were aggrieved; he also investigated the titles by which the orders held their estates, and regulated the proper boundaries of their lands. The king also commands the Manila government to exercise vigilant care for the welfare of the Indians, and to notify them that in their difficulties they must have recourse to the royal fiscal for redress or aid. In a rare pamphlet published at Manila in 1755, apparently written by one of the Jesuit missionaries in Leyte, are enumerated various instances when the raids of Moro pirates against the Visayan villages in 1754 are repulsed by the natives, under the direction of their spiritual guides; and one of these, the defense of Palompong, is related at length. An official report (in MS.) made by the Augustinian provincial (1760) shows the parishes and missions then in charge of his order in the Philippines, with the population (classified as to sex, age, etc.) of each one. In the eighteenth century several important missions were conducted by the Augustinians and Dominicans among the savage and untamed head-hunting tribes of Central Luzón. Those of the former order are recorded by Fray Antonio Mozo in his Noticia histórico natural (Madrid, 1763); he presents much valuable information regarding those people, whose first contact with European civilization was mainly found in their intercourse with those missionaries. This begins, for the Italons (now called Ibilao) and Abacas in 1702, when the Augustinians attempt to christianize them--with fair success, considering the wildness and ferocity of those people. They also carry the gospel among the Isinay, a work which the Dominicans had been compelled to abandon as hopeless; and within a quarter of a century the entire tribe have been baptized and civilized by Fray Alejandro Cacho. In 1740 these Isinay missions are ceded to the Dominican order. Among all these wild peoples, the missionaries have introduced not only the gospel, but instruction in farming and irrigation, and supplies of cattle and plows; and, wherever possible, they have formed "reductions" or settlements of their converts, usually in localities best adapted to the cultivation of the soil.