Cadmus obtained in marriage Harmonia, the daughter of Venus. The gods left Olympus to honor the occasion with their presence, and Vulcan presented the bride with a necklace of surpassing brilliancy, his own workmanship. But a fatality hung over the family of Cadmus in consequence of his killing the serpent sacred to Mars. Semele and Ino, his daughters, and Actæon and Pentheus, his grandchildren, all perished unhappily, and Cadmus and Harmonia quitted Thebes, now grown odious to them, and emigrated to the country of the Enchelians, who received them with honor and made Cadmus their king. But the misfortunes of their children still weighed upon their minds; and one day Cadmus exclaimed, “If a serpent’s life is so dear to the gods, I would I were myself a serpent.” No sooner had he uttered the words than he began to change his form. Harmonia beheld it and prayed to the gods to let her share his fate. Both became serpents. They live in the woods, but mindful of their origin, they neither avoid the presence of man nor do they ever injure any one.
There is a tradition that Cadmus introduced into Greece the letters of the alphabet which were invented by the Phœnicians. This is alluded to by Byron, where, addressing the modern Greeks, he says:
“You have the letters Cadmus gave,
Think you he meant them for a slave?”
Milton, describing the serpent which tempted Eve, is reminded of the serpents of the classical stories and says:
. . . “—pleasing was his shape,
And lovely; never since of serpent kind
Lovelier; not those that in Illyria changed
Hermione and Cadmus, nor the god