The ethnological appendix opens with a short account by Tomás Ortiz, O.S.A., of various superstitions and heathen beliefs and practices that still exist among the natives, notwithstanding all the efforts of the religious to stamp them out. Many of them show a strange mingling of heathenism and Christianity. Their belief in nonos, primarily, ancestor worship, leads them to ascribe spirits or souls to everything, somewhat as did the primitive North American Indian, and they are very careful to propitiate the spirit or nono of river, field, and wood, etc. The ceremony of tibao, or awaiting the soul of the deceased, is still practiced by the natives, and they endeavor by various methods to outwit the fathers. Ashes are spread in the house where the death occurred and by the tracks made thereon, they ascertain whether the soul has returned or not. They have numerous beliefs regarding the tigbalag, the patianac, the asuang, the last two of which are the enemies of childbirth and children. Various ridiculous conjurings are performed in order to scare off those terrible monsters of the imagination. The bongsol are certain enchantments caused in the body by a sorcerer called ganay, and in order to drive them away, one must have recourse to another sorcerer. In any sickness that is deemed natural when it first comes on, if the cure is not effected as quickly as desired, it is always referred to enchantment or bongsol, and is exorcised. Bilao is an elaborate ceremony, in which the rosary plays a conspicuous part, for the discovery of any thief. The anting-anting is carried by many of the natives. Both males and females are circumcised. There is a curious custom of spanning their weapons while reciting the Lord's Prayer, and if the two operations end at the same time, then one may kill with impunity. Many heretical beliefs and many false preachers exist, the proximity of the Mahometans having its effect. Eclipses of the moon mean that that orb is being swallowed by some awful monster, and all the people endeavor to scare away that beast with the great din that they make. Inasmuch as all these beliefs are not universal, the missionary must exercise great prudence at all times.