In other districts, where the Callicantzari are represented as demoniacal and not human and as monsters of mixed rather than of variable shape, the popular memory goes back to a period somewhat less remote, that period in which a new conception, encouraged perhaps unwittingly by archaic art, became predominant in classical art and literature, with the further result, we must suppose, that in the minds of some of the common-folk too monsters of composite shape took the place of the old human wonder-working Centaurs. And yet again in other districts, where the Christmas mummers in the guise of Callicantzari are the modern representatives of those worshippers of Dionysus who dressed themselves in the guise of Satyrs or Sileni, the traditions which survive are mainly those of a post-classical age in which the half-human half-animal comrades of Dionysus lost their distinctive names and were enrolled in the Centaurs’ ranks. Finally in the few districts where language at least testifies that werewolves have also been numbered among the Callicantzari, popular belief, though preserving much that is ancient, may have been modified by a superstition, or rather by an actual form of insanity, which was particularly prevalent in the Middle Ages. Such have been in different districts and periods the various developments of a superstition which originated in the reputation for sorcery enjoyed by a Pelasgian tribe inhabiting Mount Pelion in a prehistoric age; and the complexity of modern traditions concerning the Callicantzari is due to the fact that they do not all date from one epoch but comprise the whole history of the Centaurs. § 14. GENII. The tale of deities is now almost told. There remain only a few miscellaneous beings, identical or, at the least, comparable with the creations of ancient superstition, who may be classed together under the name of στοιχει̯ά[662] (anciently στοιχεῖα) or, to adopt the exact Latin equivalent, _genii_. The Greek word, which in classical times served as a fair equivalent for any sense of our word ‘elements,’ became from Plato’s time onward a technical term in physics for those first beginnings of the material world which Empedocles had previously called ῥιζώματα and other philosophers ἀρχαί. The physical elements however were commonly supposed to be haunted each by its own peculiar spirit, and hence among the later Platonists the term στοιχεῖα became a technicality of demonology rather than of natural science[663]. Every component part of the visible universe was credited with an invisible _genius_, a spirit whose being was in some way bound up with the existence of its abode; and the term στοιχεῖον was transferred from the material to the spiritual.