With many adventures the hero continued his way, set free, as has been told elsewhere, Prometheus, the Titan, who was bound to the Caucasus Mountains, and came at last to the place where Atlas stood carrying the weight of the heavens on his shoulders. Near him grew the tree which bore the golden apples of the Hesperides. Prometheus had advised the hero not to attempt himself to make the robbery of the golden fruit, but to send Atlas on the errand. The giant offered to do this if Hercules would support the heavens while he went. This Hercules consented to do, and Atlas set out. He put to sleep the dragon who lived beneath the tree and killed him. Then with a trick he got the better of the keepers, and returned happily to Hercules with the three apples which he had plucked. "But," he said, "I have now found out how it feels to be relieved of the heavy burden of the heavens. I will not carry them any longer." Then he threw the apples down at the feet of the hero, and left him standing with the unaccustomed, awful weight upon his shoulders. Hercules had to think of a trick in order to get away. "Let me," he said to the giant, "just make a coil of rope to bind around my head, so that the frightful weight will not cause my forehead to give way." Atlas found this new demand reasonable, and consented to take over the burden again for a few minutes. But the deceiver was at last deceived, and Hercules picked up the apples from the ground and set out on his way back. He carried the apples to Eurystheus, who, since his object of getting rid of the hero had not been accomplished, gave them back to Hercules as a present. The latter laid them on the altar of Minerva; but the goddess, knowing that it was contrary to the divine wishes to carry away this sacred fruit, returned the apples to the garden of the Hesperides. THE TWELFTH LABOR Instead of destroying his hated enemy the labors which Eurystheus had imposed upon Hercules had only strengthened the hero in the fame for which fate had selected him. He had become the protector of all the wronged upon earth, and the boldest adventurer among mortals. But the last labor he was to undertake in the region in which his hero strength--so the impious king hoped--would not accompany him. This was a fight with the dark powers of the underworld. He was to bring forth from Hades Cerberus, the dog of Hell. This animal had three heads with frightful jaws, from which incessantly poison flowed. A dragon's tail hung from his body, and the hair of his head and of his back formed hissing, coiling serpents. To prepare himself for this fearful journey Hercules went to the city of Eleusis, in Attic territory, where, from a wise priest, he received secret instruction in the things of the upper and lower world, and where also he received pardon for the murder of the Centaur.