Among the taboos observed by savages none perhaps are more numerous or important than the prohibitions to eat certain foods, and of such prohibitions many are demonstrably derived from the law of similarity and are accordingly examples of negative magic. Just as the savage eats many animals or plants in order to acquire certain desirable qualities with which he believes them to be endowed, so he avoids eating many other animals and plants lest he should acquire certain undesirable qualities with which he believes them to be infected.
