Now these apples were the fruit of a magic tree, and were more beautiful to look at and more delicious to taste than any fruit that ever grew. The best thing about them was that whoever tasted one, be he ever so old, grew young and strong again. The apples belonged to a beautiful lady named Idun, who kept them in a golden casket. Every morning the Æsir came to her to be refreshed and made over by a bite of her precious fruit. That is why in Asgard no one ever waxed old or ugly. Even Father Odin, Hœnir, and Loki, the three travelers who had seen the very beginning of everything, when the world was made, were still sturdy and young. And so long as Idun kept her apples safe, the faces of the family who sat about the table of Valhalla would be rosy and fair like the faces of children. "O friend giant!" cried Loki. "You know not what you ask! The apples are the most precious treasure of Asgard, and Idun keeps watch over them as if they were dearer to her than life itself. I never could steal them from her, Thiasse; for at her call all Asgard would rush to the rescue, and trouble would buzz about my ears like a hive of bees let loose." "Then you must steal Idun herself, apples and all. For the apples I must have, and you have promised, Loki, to do my bidding." Loki sniffed and thought, thought and sniffed again. Already his mischievous heart was planning how he might steal Idun away. He could hardly help laughing to think how angry the Æsir would be when they found their beauty-medicine gone forever. But he hoped that, when he had done this trick for Thiasse, now and then the giant would let him have a nibble of the magic apples; so that Loki himself would remain young long after the other Æsir were grown old and feeble. This thought suited Loki's malicious nature well. "I think I can manage it for you, Thiasse," he said craftily. "In a week I promise to bring Idun and her apples to you. But you must not forget the great risk which I am running, nor that I am your relative by marriage. I may have a favor to ask in return, Thiasse." Then the eagle gently dropped Loki from his claws. Falling on a soft bed of moss, Loki jumped up and ran back to his traveling companions, who were glad and surprised to see him again. They had feared that the eagle was carrying him away to feed his young eaglets in some far-off nest. Ah, you may be sure that Loki did not tell them who the eagle really was, nor confess the wicked promise which he had made about Idun and her apples. After that the three went back to Asgard, for they had had adventure enough for one day.