The current explanation of all these rules of reconciliation, restriction, expiation and purification, combines two principles, namely, the extension of the taboo of the dead to everything that has come into contact with him, and the fear of the spirit of the slain. In what combination these two elements are to explain the ceremonial, whether they are to be considered as of equal value or whether one of them is primary and the other secondary, and which one, is nowhere stated, nor would this be an easy matter to decide. In contradistinction to all this we emphasize the unity which our interpretation gains by deducing all these rules from the ambivalence of the emotion of savages towards their enemies. (_B_) THE TABOO OF RULERS The behaviour of primitive races towards their chiefs, kings, and priests, is controlled by two principles which seem rather to supplement than to contradict each other. They must both be guarded and be guarded against[53]. Both objects are accomplished through innumerable rules of taboo. Why one must guard against rulers is already known to us; because they are the bearers of that mysterious and dangerous magic power which communicates itself by contact, like an electric charge, bringing death and destruction to any one not protected by a similar charge. All direct or indirect contact with this dangerous sacredness is therefore avoided, and where it cannot be avoided a ceremonial has been found to ward off the dreaded consequences. The Nubas in East Africa, for instance, believe that they must die if they enter the house of their priest-king, but that they escape this danger if, on entering, they bare the left shoulder and induce the king to touch it with his hand. Thus we have the remarkable case of the king’s touch becoming the healing and protective measure against the very dangers that arise from contact with the king; but it is probably a question of the healing power of the intentional touching on the king’s part in contradistinction to the danger of touching him, in other words, of the opposition between passivity and activity towards the king. Where the healing power of the royal touch is concerned we do not have to look for examples among savages. In comparatively recent times the kings of England exercised this power upon scrofula, whence it was called ‘The King’s Evil’. Neither Queen Elizabeth nor any of her successors renounced this part of the royal prerogative. Charles I is said to have healed a hundred sufferers at one time, in the year 1633. Under his dissolute son Charles II, after the great English revolution had passed, royal healings of scrofula attained their greatest vogue.