I have emphasized the proximity of the excretory centres to the sexual focus in discussing this important factor of modesty, because, in analyzing so complex and elusive an emotion as modesty it is desirable to keep as near as possible to the essential and fundamental facts on which it is based. It is scarcely necessary to point out that, in ordinary civilized society, these fundamental facts are not usually present at the surface of consciousness and may even be absent altogether; on the foundation of them may arise all sorts of idealized fears, of delicate reserves, of æsthetic refinements, as the emotions of love become more complex and more subtle, and the crude simplicity of the basis on which they finally rest becomes inevitably concealed. Another factor of modesty, which reaches a high development in savagery, is the ritual element, especially the idea of ceremonial uncleanness, based on a dread of the supernatural influences which the sexual organs and functions are supposed to exert. It may be to some extent rooted in the elements already referred to, and it leads us into a much wider field than that of modesty, so that it is only necessary to touch slightly on it here; it has been exhaustively studied by Frazer and by Crawley. Offences against the ritual rendered necessary by this mysterious dread, though more serious than offences against sexual reticence or the fear of causing disgust, are so obviously allied that they all reinforce one another and cannot easily be disentangled.