the serpent lived, there was a tank which went by the name of “the sea of Erechtheus.”(251) (M66) If the explanation of the eight years’ cycle which I have adopted holds good for Thebes and Delphi, the octennial festivals held at these places probably had some reference to the sun and moon, and may have comprised a sacred marriage of these luminaries. The solar character of Apollo, whether original or adventitious, lends some countenance to this view, but at both Delphi and Thebes the god was apparently an intruder who usurped the place of an older god or hero at the festival. At Thebes that older hero was Cadmus. Now Cadmus was a brother of Europa, who appears to have been a personification of the moon conceived in the form of a cow.(252) He travelled westward seeking his lost sister till he came to Delphi, where the oracle bade him give up the search and follow a cow which had the white mark of the full moon on its flank; wherever the cow fell down exhausted, there he was to take up his abode and found a city. Following the cow and the directions of the oracle he built Thebes.(253) Have we not here in another form the myth of the moon pursued and at last overtaken by the sun? and the famous wedding of Cadmus and Harmonia, to attend which all the gods came down from heaven,(254) may it not have been at once the mythical marriage of the great luminaries and the ritual marriage of the king and queen of Thebes masquerading, like the king and queen of Cnossus, in the character of the lights of heaven at the octennial festival which celebrated and symbolised the conjunction of the sun and moon after their long separation, their harmony after eight years of discord? A better name for the bride at such a wedding could hardly have been chosen than Harmonia.