The Mamanuas (man-banua, “inhabitant of the country”) are the true indigenous aborigines of the country.[31] Their color is dark, and their hair is oily, woolly, and curly. They are nomadic and go naked. They pass the night where it overtakes them, taking shelter under an improvised hut of palásan[32] or of any tree branch. Their food is the fruit and the roots of the forest and the flesh of deer, boars, monkeys, snakes, and reptiles. Their weapons are the bow and arrow, spear, and knife. They have an idea of God and of a worship, as well as some maxims of natural law. They are timid, and miserable creatures, moved by necessity, and loving of ease. They inhabit the small peninsula of Surigao and extend to Tago through the mountains. Their chiefs generally contract marriage with the Manobo women. This race is almost extinct in consequence of the privations incident to their wandering life. Four small villages of Mamanuas exist in the parish of Mainit and another in that of Gigáquit. The total number of this tribe does not exceed two or three thousand. Those baptized number about five hundred. In the map they occupy color number 2.

The Manobos or Manuba (man-subá,[33] “river dweller”) as is indicated by their name itself live near the rivers. They inhabit the valley of the Agúsan, which extends from Butúan to Oloagúsan. They live besides on the point of San Agustin on the southern shore of the bay of Malálag, and in the district of Cottabato, as may be seen in the ethnographical map, accompanying these letters, color no. 3.

This tribe is numerous, wild, fickle, easy to reduce,[34] somewhat difficult to preserve, and suspicious and treacherous in their attacks. They build their houses near the rivers and often in the forks of trees. Their religion is very like that of the Mandayas. They annually change their abode in order to make new fields, being compelled to do so because of the grass and briars which spring up. As they have no means for the deep working of the soil, consequently permanent possession has no charm for them. They abandon their houses as soon as anyone dies in them, and if the deceased is an outsider, they demand the worth of the abandoned house from his relatives. Their system of life is the patriarchal, under the protection of their respective bagani. The Manobo, according to Dr. Montano,[35] presents two extreme types: one athletic, and of much slighter build than the other. Those two types combined in the majority of the individuals constitute another medium type whose characters are more plainly marked in the Manobos of Dávao, than in those of the Agúsan. Their clothing, weapons, and ornaments closely resemble those of the Mandayas, with the exception of the strings of glass beads, which are black rather than red among the Manobos. Tattooing is practiced among the Manobos, and is done by means of a needle and powdered charcoal. The number of the Manobos in the valley of Agúsan is about 20,000, half of whom are now reduced. The number of those of the district of Dávao and Cottabato is unknown.

The Mandayas (man-daya, “people of the upland”—ilaya) is a tribe extending from Tago to Mati, and from Gandía to the source of the Agúsan, and in the district below the Sálug, as may be seen at color no. 34, of the adjoined ethnographical map. The manners and customs of the Mandayas are described in a letter written by Father Héras, June 8, 1878. The Mandayas number about 30,000 of whom 8,000 are already reduced and baptized.

The Manguangas[36] (man-gulangas, “people of the woods”) live on the upper part of the Sálug. They are warlike and have continual quarrels with the Manobos and Mandayas of the Agúsan, the Moros of the Hijo, and the Atás. They are easy to reduce. In the map, they occupy the place corresponding to color no. 5.

The Monteses (Buquid-non)[37] of the second district of Mindanao are divided into two groups: those adjacent to the Manobos of the Agúsan between Gingóog and Nasípit, who approach to the habits, and the social and religious life of the latter; and those who people the mountains and valleys of the Tagalóan River. Comprehended in the parish of Balingasag, there are several reductions of them. Their number is about 4,000. They are shown in the map at color no. 6.

The Atás (from itaas, ataas, atás, “those who live on the heights”) are the indigenous natives who generally live about the western districts of Mount Apo.[38] They are warlike and fight against the Moros and the Bagobos. The Atás extend to the northwest of Dávao, and in their ramifications finally reach to the borders of the Bagobos, Guiangas, Mandayas, and even to the Subanos and the Monteses of Cagayan and Maguindánao. The number of this tribe is unknown, even approximately, but it is conjectured with foundation that it must be very numerous. In the map they occupy the place corresponding to color no. 7.

The Guiangas[39] (guanga, gulanga “inhabitant of the woods”) live, according to Father Gisbert, scattered between the rivers and rancherías of Dulían, Guimálan, Tamúgan, Ceril, and Biao near Dávao, and they number about 6,400. Their dialect is entirely different from those of the others, and they show sufficient intelligence, but they are very barbarous, and human sacrifices are still held among them. In the map they occupy color no. 8.

The Bagobos[40] inhabit the eastern slopes of the Apo. They are of moderate stature, and well built, for the deformed children are smothered at birth. They are fond of work. They perform human sacrifices in order to placate Daragó (Da-dagó, Du-dugó, Mu-dugó, “he who sheds blood,” or “the shedder of blood”) or Mandarangan. They believe in two beginnings, are difficult to reduce, and easy to keep after reduction. They are warlike and cruel, excellent horsemen, and daring fishermen. They dress luxuriantly, and at times wear shirts which cost them two or three slaves. They drink íntus (the sap of the fermented sugar-cane) and offer it when they make visits to all those in the assembly beginning with the most worthy. The number of the Bagobos, according to Father Gisbert, is about 12,000, of whom 800 have been reduced and baptized. In the map they are found at color no. 9.

The Caláganes[41] are not Moros. Their captain and all his family have been baptized, and, in consequence of that, a new reduction has been formed from the individuals of this tribe in Dígos, between Píapi and Santa Cruz. They are fine fellows and very tractable. In the map they occupy the color corresponding to no. 10.