Tradition also has it that the Toltecs were dispersed by reason of a great famine due to drought, followed by pestilence, only a few people surviving. Banished from the scene of their civilisation by these disasters, the few remaining inhabitants made their way to Yucatan and Central America; and their names and traditions seem to be stamped there. Beyond this little is known of the Toltecs. Possibly some of them found their way still further south to Ecuador and Peru, and influenced the Inca civilisations of the South American continent. To the Toltecs is ascribed the most refined civilisation of prehistoric America, a culture which was indeed the source of the far inferior one of the Aztecs, which we shall presently observe. The Toltecs wrought cleverly in gold and silver, and in cotton fabrics; whilst the remarkable character of their buildings and structures is shown by the ruins of these to-day, as at Cholula and Teotihuacan. The art of picture-writing is attributed to them; and the famous Calendar stone of Mexico has also been ascribed to these people. From amid the shadowy history of the Toltecs the traditions of the deity which so largely influenced prehistoric Mexican religion arose: the mystic Quetzalcoatl, the "god of the air," "the feathered serpent." This strange personage was impressed upon the people's mind as a white man of a foreign race, with noble features, long beard, and flowing garments; and he taught them a sane religion, in which virtue and austerity were dominant, and the sacrifice of human beings and animals forbidden. This singular personage, runs the fable, disappeared after twenty years' sojourn among them, in the direction of the rising sun, having promised to return. When the Spaniards came out of the East their coming was hailed as the return of Quetzalcoatl, and the reverence and superstition surrounding these supposed "children of the sun" protected the Spaniards and permitted their advance into the country, and indeed, was at length conducive to the downfall of Montezuma and the Aztec Empire.