A curious application of the doctrine of contagious magic is the relation commonly believed to exist between a wounded man and the agent of the wound, so that whatever is subsequently done by or to the agent must correspondingly affect the patient either for good or evil. Thus Pliny tells us that if you have wounded a man and are sorry for it, you have only to spit on the hand that gave the wound, and the pain of the sufferer will be instantly alleviated.​[733] In Melanesia, if a man’s friends get possession of the arrow which wounded him, they keep it in a damp place or in cool leaves, for then the inflammation will be trifling and will soon subside. Meantime the enemy who shot the arrow is hard at work to aggravate the wound by all the means in his power. For this purpose he and his friends drink hot and burning juices and chew irritating leaves, for this will clearly inflame and irritate the wound. Further, they keep the bow near the fire to make the wound which it has inflicted hot; and for the same reason they put the arrow-head, if it has been recovered, into the fire. Moreover, they are careful to keep the bow-string taut and to twang it occasionally, for this will cause the wounded man to suffer from tension of the nerves and spasms of tetanus.​[734] Similarly when a Kwakiutl Indian of British Columbia had bitten a piece out of an enemy’s arm, he used to drink hot water afterwards for the purpose of thereby inflaming the wound in his foe’s {p202} body.​[735] Among the Lkuñgen Indians of the same region it is a rule that an arrow, or any other weapon that has wounded a man, must be hidden by his friends, who have to be careful not to bring it near the fire till the wound is healed. If a knife or an arrow which is still covered with a man’s blood were thrown into the fire, the wounded man would suffer very much.​[736] In the Yerkla-mining tribe of south-eastern Australia it is thought that if any one but the medicine-man touches the flint knife with which a boy has been subincised, the boy will thereby be made very ill. So seriously is this belief held that if the lad chanced thereafter to fall sick and die, the man who had touched the knife would be killed.​[737] “It is constantly received and avouched,” says Bacon, “that the anointing of the weapon that maketh the wound will heal the wound itself. In this experiment, upon the relation of men of credit (though myself, as yet, am not fully inclined to believe it), you shall note the points following: first, the ointment wherewith this is done is made of divers ingredients, whereof the strangest and hardest to come by are the moss upon the skull of a dead man unburied, and the fats of a boar and a bear killed in the act of generation.” The precious ointment compounded out of these and other ingredients was applied, as the philosopher explains, not to the wound but to the weapon, and that even though the injured man was at a great distance and knew nothing about it. The