This is one way in which the idea of a man-god is reached. But there is another. Side by side with the view of the world as pervaded by spiritual forces, primitive man has another conception in which we may detect a germ of the modern notion of natural law or the view of nature as a series of events occurring in an invariable order without the intervention of personal agency. The germ of which I speak is involved in that sympathetic magic, as it may be called, which plays a large part in most systems of superstition. One of the principles of sympathetic magic is that any effect may be produced by imitating it. To take a few instances. If it is wished to kill a person an image of him is made and then destroyed; and it is believed that through a certain physical sympathy between the person and his image, the man feels the injuries done to the image as if they were done to his own body, and that when it is destroyed he must simultaneously perish. Again, in Morocco a fowl or a pigeon may sometimes be seen with a little red bundle tied to its foot. The bundle contains a charm, and it is believed that as the charm is kept in constant motion by the bird a corresponding restlessness is kept up in the mind of him or her against whom the charm is directed.(26) In Nias when a wild pig has fallen into the pit prepared for it, it is taken out and its back is rubbed with nine fallen leaves, in the belief that this will make nine more wild pigs fall into the pit just as the nine leaves fell from the tree.(27) When a Cambodian hunter has set his nets and taken nothing, he strips himself naked, goes some way off, then strolls up to the net as if he did not see it, lets himself be caught in it and cries, “Hillo! what’s this? I’m afraid I’m caught.” After that the net is sure to catch game.(28) In Thüringen the man who sows flax carries the seed in a long bag which reaches from his shoulders to his knees, and he walks with long strides, so that the bag sways to and fro on his back. It is believed that this will cause the flax crop to wave in the wind.(29) In the interior of Sumatra the rice is sown by women who, in sowing, let their hair hang loose down their back, in order that the rice may grow luxuriantly and have long stalks.(30) Again, magic sympathy is supposed to exist between a man and any severed portion of his person, as his hair or nails; so that whoever gets possession of hair or nails may work his will, at any distance, upon the person from whom they were cut. This superstition is world-wide. Further, the sympathy in question exists between friends and relations, especially at critical times. Hence, for example, the elaborate code of rules which regulates the conduct of persons left at home while a party of their friends is out fishing or hunting or on the war-path. It is thought that if the persons left at home broke these rules their absent friends would suffer an injury, corresponding in its nature to the breach of the rule.