Excerpt: ...whistling). Or ordinary human actions might be imitated: a stick thrown or pointed toward an enemy, it was 395 believed, would cause a spear to enter his body; 1538 a hostile glance of the eye, indicating desire to inflict injury, might carry ill luck. 1539 In such cases the fundamental conceptions are the sympathy that comes from unity and the activity of the pervasive mana. These conceptions are visible in procedures in which action on a part of the human body, or on an image or picture of it, was supposed to reach the body itself. The possession of a piece of the bone, skin, hair, or nail of a man might enable one who had knowledge of superhuman laws and processes to affect the man with sickness or even to cause his death. Contact of objects naturally suggests their unity, but the sympathy between them was not held to be dependent on contact; a man's bone remained a part of him, however far it might be separated from him. A dead body did not lose its virtues; the qualities of a dead warrior might be acquired by eating his flesh. The mysterious unity of things seems to have resided, in savage thought, in the omnipresent mana, a force independent of human limitations. Not that there was a definite theory on the subject, but something of this sort seems to be assumed in the ideas and usages of many low tribes. 1540 On the other hand, a magical effect may be set aside by magic. A sick man, believing his sickness to be the work of a magician (the usual savage theory of the cause of bodily ills), sends for another magician to counteract the evil work; and a magician, failing to cure his patient, ascribes his failure to the machinations of a powerful rival. In all such cases the theory and the methods are the same; the magic that cures is not different in principle (though it may differ in details) from the magic that kills. 887 . The facts observed by practicers of magic probably contributed to the collections of material that furnished the...