And the key of the chain was buried in the foundations of the pillars[673]’ on which the cross rested. The locked chain was probably the magical means by which the tutelary _genius_ of the city was kept at his post. But these wide and vague usages of the word and its derivatives have now for the most part disappeared. Leo Allatius[674] still used στοιχειωματικός in the sense of ‘magician,’ but I have not found it in modern Greek. A remnant of the verb στοιχειοῦν[675] is seen in the past participle στοιχειωμένος, which at the present day is applied in its true sense to objects ‘haunted by _genii_.’ And the word στοιχειά, though locally extended in scope so as to become in effect synonymous with δαιμόνια or ἐξωτικά[676], comprising all non-Christian deities irrespectively of their close connexion with particular natural phenomena, still maintains in its more strict, and I think more frequent, usage the meaning of _genii_. The term thus provided by the Platonists and popularised accidentally by the Church is a convenience in the classification of demons; for the ancient Greeks had no popular word which was exactly equivalent; they had to choose between the vague term δαιμόνιον which implied nothing of attachment to any place or object, and the special designation of the particular kind of _genius_. The Latin tongue was in this respect better supplied. It must not however be inferred that the introduction of the useful term στοιχεῖα into the demonological nomenclature of Greece marked any innovation in popular superstition. The Greeks no less than the Romans had from time immemorial believed in _genii_. That scene of the _Aeneid_[677], in which, while Aeneas is holding a memorial feast in honour of his father, a snake appears and tastes of the offerings and itself in turn is honoured with fresh sacrifice as being either the genius of the place or an attendant of the hero Anchises, is throughout Greek in tone; and the comment of Servius thereupon, ‘There is no place without a _genius_, which usually manifests itself in the form of a snake,’ revives a hundred memories of sacred snakes tended in the temples or depicted on the tombs of ancient Greece. Moreover several of the supernatural beings whom I have already described, and whose identity with the creatures of ancient superstition is established, are essentially _genii_. The Lamia is the _genius_ of the darksome cave where she makes her lair; the Gorgon, of the straits where she waylays her prey; and, most clearly of all, the Dryads are the _genii_ of the trees which they inhabit. For the life of each one of them is bound up with the life of the tree in which she dwells; and still as in old time, so surely as the tree decays away with age, her life too is done and ‘her soul leaves therewith the light of the sun[678].’ The woodman of to-day therefore speaks with the utmost fidelity to ancient tradition when he calls the trees where his