The Baganda believe that every person is born with a double, and this double they identify with the afterbirth, which they regard as a second child. The mother buries the afterbirth at the root of a plantain tree, which then becomes sacred until the fruit has ripened, when it is plucked to furnish a sacred feast for the family. Among the Cherokees the navel-string of a girl is buried under a corn-mortar, in order that the girl may grow up to be a good baker; but the navel-string of a boy is hung up on a tree in the woods, in order that he may be a hunter. The Incas of Peru preserved the navel-string with the greatest care, and gave it to the child to suck whenever it fell ill. In ancient Mexico they used to give a boy’s navel-string to soldiers, to be buried by them on a field of battle, in order that the boy might thus acquire a passion for war. But the navel-string of a girl was buried beside the domestic hearth, because this was believed to inspire her with a love of home and taste for cooking and baking.
Even in Europe many people still believe that a person’s destiny is more or less bound up with that of his navel-string or afterbirth. Thus in Rhenish Bavaria the navel-string is kept for a while wrapt up in a piece of old linen, and then cut or pricked to pieces according as the child is a boy or a girl, in order that he or she may grow up to be a skilful workman or a good sempstress. In Berlin the midwife commonly delivers the dried navel-string to the father with a strict injunction to preserve it carefully, for so long as it is kept the child will live and thrive and be free from sickness. In Beauce and Perche the people are careful to throw the navel-string neither into water nor into fire, believing that if that were done the child would be drowned or burned.
Thus in many parts of the world the navel-string, or more commonly the afterbirth, is regarded as a living being, the brother or sister of the infant, or as the material object in which the guardian spirit of the child or part of its soul resides. Further, the sympathetic connexion supposed to exist between a person and his afterbirth or navel-string comes out very clearly in the widespread custom of treating the afterbirth or navel-string in ways which are supposed to influence for life the character and career of the person, making him, if it is a man, a nimble climber, a strong swimmer, a skilful hunter, or a brave soldier, and making her, if it is a woman, a cunning sempstress, a good baker, and so forth. Thus the beliefs and usages concerned with the afterbirth or placenta, and to a less extent with the navel-string, present a remarkable parallel to the widespread doctrine of the transferable or external soul and the customs founded on it. Hence it is hardly rash to conjecture that the resemblance is no mere chance coincidence, but that in the afterbirth or placenta we have a physical basis (not necessarily the only one) for the theory and practice of the external soul. The consideration of that subject is reserved for a later part of this work.
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. 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. “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 experiment, he tells us, had been tried of wiping the ointment off the weapon without the knowledge of the person hurt, with the result that he was presently in a great rage of pain until the weapon was anointed again. Moreover, “it is affirmed that if you cannot get the weapon, yet if you put an instrument of iron or wood resembling the weapon into the wound, whereby it bleedeth, the anointing of that instrument will serve and work the effect.” Remedies of the sort which Bacon deemed worthy of his attention are still in vogue in the eastern counties of England. Thus in Suffolk if a man cuts himself with a bill-hook or a scythe he always takes care to keep the weapon bright, and oils it to prevent the wound from festering. If he runs a thorn or, as he calls it, a bush into his hand, he oils or greases the extracted thorn. A man came to a doctor with an inflamed hand, having run a thorn into it while he was hedging. On being told that the hand was festering, he remarked, “That didn’t ought to, for I greased the bush well after I pulled it out.” If a horse wounds its foot by treading on a nail, a Suffolk groom will invariably preserve the nail, clean it, and grease it every day, to prevent the foot from festering. Similarly Cambridgeshire labourers think that if a horse has run a nail into its foot, it is necessary to grease the nail with lard or oil and put it away in some safe place, or the horse will not recover. A few years ago a veterinary surgeon was sent for to attend a horse which had ripped its side open on the hinge of a farm gatepost. On arriving at the farm he found that nothing had been done for the wounded horse, but that a man was busy trying to pry the hinge out of the gatepost in order that it might be greased and put away, which, in the opinion of the Cambridge wiseacres, would conduce to the recovery of the animal. Similarly Essex rustics opine that, if a man has been stabbed with a knife, it is essential to his recovery that the knife should be greased