Perseus donned his shoes and helmet, and flew until he reached the abode of the Gorgons. These were three hideous daughters of Phorcus, and sisters of the Grææ. One only of them, Medusa, was mortal. Perseus found the monsters asleep. They were covered with dragon scales, and had writhing serpents instead of hair, and, besides these charms, they had huge tusks like those of a boar, brazen hands and golden wings. Whoever looked on them was immediately turned to stone, but Perseus knew this and gazed only on their reflection in his shield. Having thus discovered Medusa, without harm to himself, he cut off her head with his curved knife. Perseus dropped the head of Medusa into the pouch slung over his shoulder, and went quickly on his way. When Medusa's sisters awoke, they tried to pursue the young demigod, but the helmet hid him from their sight and they sought him in vain.

At length he alighted in the realm of King Atlas, who was of enormous stature and owned a grove of trees that bore golden fruit, and were guarded by a terrible dragon. In vain did the slayer of Medusa ask the king for food and shelter. Fearful of losing his golden treasure, Atlas refused the wanderer entertainment in his palace. Upon this Perseus became enraged, and taking the head of Medusa from his pouch, held it toward the huge king, who was suddenly turned to stone. His hair and beard changed to forests, his shoulders, hands and bones became rocks, and his head grew up into a lofty mountain-peak. Mount Atlas, in Africa, was believed by the ancients to be the mountain into which the giant was transformed.

Perseus then rose into the air again, continued his journey, and came to Ethiopia, where he beheld a maiden chained to a rock that jutted out into the sea. He was so enchanted with her loveliness that he almost forgot to poise himself in the air with his wings. At last, taking off his helmet so that he and his politeness might be perceived, he said: "Pray tell me, beauteous maiden, what is thy country, what thy name, and why thou art here in bonds?"

The weeping maiden blushed at sight of the handsome stranger, and replied:

"I am Andromeda, daughter of Cepheus, king of this country. My mother boasted to the nymphs, daughters of Nereus, that she was far more beautiful than they. This roused their anger, and they persuaded Neptune, their friend, to make the sea overflow our shores and send a monster to destroy us. Then an oracle proclaimed that we never should be rid of these evils until the queen's daughter should be given for the monster's prey. The people forced my parents to make the sacrifice, and I was chained to this rock."

As she ceased speaking the waves surged and boiled, and a fearful monster rose to the surface. The maiden shrieked in terror, just as her parents came hastening to her in hopeless anguish, for they could do nothing but weep and moan.

Then Perseus told them who he was, and boldly proposed to rescue the maiden if they would promise to give her to him as his wife.

The king and queen, eager to save Andromeda, at once agreed to this, and said they would give him not only their daughter, but also their own kingdom as her dowry.

Meanwhile, the monster had come within a stone's throw of the shore, so Perseus flew up into the air, put on his helmet, pounced down upon the creature, and killed it, after a fierce struggle. He then sprang ashore and loosed the bonds of Andromeda, who greeted him with words of thanks and looks of love. He restored her to the arms of her delighted parents, and entered their palace a happy bridegroom.

Soon the wedding festivities began, and there was general rejoicing. The banquet was not yet over, however, when a sudden tumult arose in the court of the palace. It was caused by Phineus, brother of Cepheus, who had been betrothed to his niece Andromeda, but had failed her in her hour of need. He now made his appearance with a host of followers and clamored for his bride.