Wilkes gives considerable sound advice in regard to the navigation of this district, trading at Joló, and various other matters, besides an interesting though brief history of Joló, before and after the advent of the Spaniards. Those interesting people the sea-gypsies are described. The expedition reaches the Straits of Singapore on February 18. The remainder of the appendix, except the last document, constitutes letters written by the Jesuit missionaries from Mindanao and Basilan, and an ethnological survey of the Mindanao peoples by a Jesuit of Manila who had formerly spent a number of years in Mindanao. They are all comparatively modern, extending through the years 1885-1889. January 20, 1885, Father Quirico Moré writes to the father superior of the missions mainly concerning the Moros about the Gulf of Dávao, where the Spaniard José Oyangúren defeated them and brought them under the dominion of Spain. Various events are related in regard to efforts to reduce these Moros who are less in number than is generally supposed, for though the Moros generally acquiesce in the Spanish proposals to assume village life, their willingness is only feigned. Those about the gulf are the "remains of powerful and warlike Moros, who in the not distant past collected tribute from the Mandayas and other heathens." There are two classes of Moros, the datos, or aristocracy, and the common people. With the first rank must be included the panditas or priests. Though the Moros endure, they do not accept, Spanish rule, and await the time when they can throw it off. Meanwhile they also suffer from the heathens about them, who are hostile to them. To obtain the best results the officers of dato and pandita should be suppressed, and other radical measures carried out. Father Pedro Rosell writes from Caraga, April 17, 1885, in regard to a visit of inspection of the visitas of the southern part of the district made by himself and Father Pablo Pastells, in December 1884, to the Mandayas. He reports a most encouraging state of affairs there pertaining to the conversion and reduction of the Mandayas. Especially helpful has been the conversion of three bailanes or priestesses. With the occasion of that conversion, the writer describes the method of sacrifice among the Mandayas, and the effects produced on the bailanes who are believed to be the true mediators between men and gods. In describing the form of belief Father Rosell finds an analogy to the Trinity in the Mandaya divinities, and one to Satan in the two spirits of evil. Of great interest in this letter is the song sung by the bailanes while sacrificing.