"And how is he to be obliged?" asked Hercules again. "He is bound to answer anybody who is stronger than he." "Well, I am pretty strong," said Hercules, modestly. "Anyhow, I can but try." "Yes, you do look strong," said the nymphs; "but----" Here they broke into a laugh, as if some sort of a joke were in their minds. "Well, if you go to the Ægean Sea, where King Ægeus was drowned, you'll be sure to find Nereus sleeping in the sun somewhere along the shore." "And how shall I know him when I see him?" asked Hercules. "You will see a very, very old man, older than anybody you ever saw, with bright blue hair, and a very long white beard. He has fifty daughters, so he often gets tired, and likes to sleep as much as he can." Hercules thanked the nymphs, whom he still heard laughing after he left them, and thought to himself that it would not be much trouble to prove himself stronger than a very old man who was always tired. So, having journeyed back again to the Ægean Sea, he walked along the shore till, sure enough, he saw, sound asleep in a sunny cove, a man who looked a thousand years old, with a white beard reaching below his waist, and with hair as blue as the sea. "Will you kindly tell me the way to the gardens of the Hesperides?" asked Hercules, waking Nereus by a gentle shake--though I suspect one of Hercules' shakes was not what most people would consider gentle. Instead of answering, Nereus tried to roll himself into the sea, at the bottom of which was his home. Hercules caught him by the leg and arm: when, to his amazement, Nereus suddenly turned into a vigorous young man, who wrestled with him stoutly to get away. Hercules got him down at last. "Now tell me the way to the gardens of the Hesperides!" he panted--for he was out of breath with the struggle. But he found himself holding down, no longer a man, but a huge and slippery seal, which all but succeeded in plunging into the sea. But he held on until the seal also was exhausted. And then Hercules found out what had made the nymphs laugh so. For when the seal was wearied out it changed into a gigantic crab, the crab into a crocodile, the crocodile into a mermaid, the mermaid into a sea-serpent, the sea-serpent into an albatross, the albatross into an octopus, the octopus into a mass of sea-weed, which was the hardest to hold of all. But the sea-weed turned back into the old man again, who said:-- "There--you have conquered me in all my shapes; I haven't got any more. You may let me go now, and I will answer you. You must go on through Italy and Spain, and thence across into Africa. You will then be in the land of Mauritania. You must still go south, following the sea-shore, till you come to the giant Atlas, who supports the sky upon his head, and so keeps it from falling. He"--the old sea-god's voice was growing fainter and fainter--"he will tell you all about the gardens of the Hesperides. They're close by--the gardens of the Hesp----"