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. This latter belief we have found among the aborigines of Queensland, the Battas of Sumatra, and the Norsemen of Iceland. In accordance with such beliefs it has been customary to preserve these parts of the body, at least for a time, with the utmost care, lest the character, the fate, or even the life of the person to whom they belong should be endangered by their injury or loss. 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 swift runner, a nimble climber, a strong swimmer, a skilful hunter, or a brave soldier, and making her, if it is a woman, an expert fisher, a cunning sempstress, a good cook or baker, and so forth. Thus the beliefs and usages {p201} 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.​[732] [Sidenote: Contagious magic exemplified in the sympathetic connexion supposed to exist between a wound and the weapon which inflicted it. Bacon on the custom of anointing the weapon in order to heal the wound. East Anglian practice of anointing the weapon instead of the wound.]