the Alur, a tribe inhabiting the south-western region of the upper Nile, to bury a man in an ant-hill and leave him there for a while is the regular treatment for insanity.[154] [In such cases the beating or stinging was originally a purification; at a later time it is interpreted as a test of courage and endurance.] In like manner it is probable that beating or scourging as a religious or ceremonial rite was originally a mode of purification. It was meant to wipe off and drive away a dangerous contagion, whether personified as demoniacal or not, which was supposed to be adhering physically, though invisibly, to the body of the sufferer.[155] The pain inflicted on the person beaten was no more the object of the beating than it is of a surgical operation with us; it was a necessary accident, that was all. In later times such customs were interpreted otherwise, and the pain, from being an accident, became the prime object of the ceremony, which was now regarded either as a test of endurance imposed upon persons at critical epochs of life, or as a mortification of the flesh well pleasing to the god. But asceticism, under any shape or form, is never primitive. The savage, it is true, in certain circumstances will voluntarily subject himself to pains and privations which appear to us wholly needless; but he never acts thus unless he believes that some solid temporal advantage is to be gained by so doing. Pain for the sake of pain, whether as a moral discipline in this life or as a means of winning a glorious immortality hereafter, is not an object which he sets himself deliberately to pursue. [This explanation confirmed with reference to the beating of girls at puberty among the South American Indians; treatment of a girl at puberty among the Banivas of the Orinoco; symptoms of puberty in a girl regarded as wounds inflicted by a demon.]