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. [142] 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 [143] (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 [144] 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 [145] 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.