While Cadmus stood over his conquered foe, contemplating its vast size, a voice was heard (from whence he knew not, but it was Minerva's) commanding him to take the dragon's teeth and sow them in the earth. Scarce had he done so when the clods began to move and the points of spears to appear above the surface. Next, helmets with their nodding plumes came up; next, the shoulders and breasts and limbs of men with weapons, and in time a harvest of armed warriors. Cadmus prepared to encounter a new enemy, but one of them said to him, "Meddle not with our civil war." With that he who had spoken smote one of his earthborn brothers with a sword, and he himself fell pierced with an arrow from another. The latter fell victim to a fourth, and in like manner the whole crowd dealt with each other till all but five fell slain. These five joined with Cadmus in building his city, to which they gave the name appointed. [Illustration: FIG. 55. HARMONIA IN COMPANY OF DEITIES] As penance for the destruction of this sacred serpent, Cadmus served Mars for a period of eight years. After he had been absolved of his impiety, Minerva set him over the realm of Thebes, and Jove gave him to wife Harmonia, the daughter of Venus and Mars. 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. Of this marriage were born four daughters, Semele, Ino, Autonoë, and Agave, and one son, Polydorus. But in spite of the atonement made by Cadmus, a fatality hung over the family. The very necklace of Vulcan seemed to catch the spirit of ill luck and convey a baleful influence to such as wore it. Semele, Ino, Actæon the son of Autonoë, and Pentheus the son of Agave, all perished by violence. Cadmus and Harmonia quitted Thebes, 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 weighing upon their minds, Cadmus one day 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, beholding it, prayed the gods to let her share his fate. Both became serpents. It is said that, mindful of their origin, they neither avoid the presence of man nor do they injure any one. But the curse appears not to have passed from their house until the sons of their great-great-grandson [OE]dipus had by fraternal strife ended themselves and the family.[86] [Illustration: FIG. 56. THE FORGE OF VULCAN From the painting by Velasquez]