a member of another tribe, he paints one side of his body, spear, and sword red, and the other side white. For four days after the slaughter he is considered unclean and may not go home. He has to build a small shelter by a river and live there; he may not associate with his wife or sweetheart, and he may eat nothing but porridge, beef, and goat's flesh. At the end of the fourth day he must purify himself by taking a strong purge made from the bark of the segetet tree and by drinking goat's milk mixed with blood. Among the Bantu tribes of Kavirondo, when a man has killed an enemy in warfare he shaves his head on his return home, and his friends rub a medicine, which generally consists of goat's dung, over his body to prevent the spirit of the slain man from troubling him. Exactly the same custom is practised for the same reason by the Wageia of East Africa. With the Ja-Luo of Kavirondo the custom is somewhat different. Three days after his return from the fight the warrior shaves his head. But before he may enter his village he has to hang a live fowl, head uppermost, round his neck; then the bird is decapitated and its head left hanging round his neck. Soon after his return a feast is made for the slain man, in order that his ghost may not haunt his slayer. In the Pelew Islands, when the men return from a warlike expedition in which they have taken a life, the young warriors who have been out fighting for the first time, and all who handled the slain, are shut up in the large council-house and become tabooed. They may not quit the edifice, nor bathe, nor touch a woman, nor eat fish; their food is limited to coco-nuts and syrup. They rub themselves with charmed leaves and chew charmed betel. After three days they go together to bathe as near as possible to the spot where the man was killed.
Among the Natchez Indians of North America young braves who had taken their first scalps were obliged to observe certain rules of abstinence for six months. They might not sleep with their wives nor eat flesh; their only food was fish and hasty-pudding. If they broke these rules, they believed that the soul of the man they had killed would work their death by magic, that they would gain no more successes over the enemy, and that the least wound inflicted on them would prove mortal. When a Choctaw had killed an enemy and taken his scalp, he went into mourning for a month, during which he might not comb his hair, and if his head itched he might not scratch it except with a little stick which he wore fastened to his wrist for the purpose. This ceremonial mourning for the enemies they had slain was not uncommon among the North American Indians.
Thus we see that warriors who have taken the life of a foe in battle are temporarily cut off from free intercourse with their fellows, and especially with their wives, and must undergo certain rites of purification before they are readmitted to society. Now if the purpose of their seclusion and of the expiatory rites which they have to perform is, as we have been led to believe, no other than to shake off, frighten, or appease the angry spirit of the slain man, we may safely conjecture that the similar purification of homicides and murderers, who have
