(M168) If cut hair and nails remain in sympathetic connexion with the person from whose body they have been severed, it is clear that they can be used as hostages for his good behaviour by any one who may chance to possess them; for on the principles of contagious magic he has only to injure the hair or nails in order to hurt simultaneously their original owner. Hence when the Nandi have taken a prisoner they shave his head and keep the shorn hair as a surety that he will not attempt to escape; but when the captive is ransomed, they return his shorn hair with him to his own people.(951) For a similar reason, perhaps, when the Tiaha, an Arab tribe of Moab, have taken a prisoner whom they do not wish to put to death, they shave one corner of his head above his temples and let him go. So, too, an Arab of Moab who pardons a murderer will sometimes cut off the man’s hair and shave his chin before releasing him. Again, when two Moabite Arabs had got hold of a traitor who had revealed their plan of campaign to the enemy, they contented themselves with shaving completely one side of his head and his moustache on the other, after which they set him at liberty.(952) We can now, perhaps, understand why Hanun King of Ammon shaved off one-half of the beards of King David’s messengers and cut off half their garments before he sent them back to their master.(953) His intention, we may conjecture, was not simply to put a gross affront on the envoys. He distrusted the ambitious designs of King David and wished to have some guarantee of the maintenance of peace and friendly relations between the two countries. That guarantee he may have imagined that he possessed in half of the beards and garments of the ambassadors; and if that was so, we may suppose that when the indignant David set the army of Israel in motion against Ammon, and the fords of Jordan were alive with the passage of his troops, the wizards of Ammon were busy in the strong keep of Rabbah muttering their weird spells and performing their quaint enchantments over the shorn hair and severed skirts in order to dispel the thundercloud of war that was gathering black about their country. Vain hopes! The city fell, and from the gates the sad inhabitants trooped forth in thousands to be laid in long lines on the ground and sawed asunder or ripped up with harrows or to walk into the red glow of the burning brick kilns.(954) Again, the parings of nails may serve the same purpose as the clippings of hair; they too may be treated as bail for the good behaviour of the persons from whose fingers they have been cut. It is apparently on this principle that when the Ba-yaka of the Congo valley cement a peace, the chiefs of the two tribes meet and eat a cake which contains some of their nail-parings as a pledge of the maintenance of the treaty. They believe that he who breaks an engagement contracted in this solemn manner will die.(955) Each of the high contracting parties has in fact given