ONCE upon a time a king had three sons. The first was called Prince of the Stars. The next was called the Moon Prince and the third was called the Sun Prince. The king was so very happy when the third son was born that he promised to give the queen any boon she might ask.

The queen kept the promise in mind, waiting until the third son was grown before asking the king to give her the boon.

On the twenty-first birthday of the Sun Prince she said to the king, "Great King, when our youngest child was born you said you would give me a boon. Now I ask you to give the kingdom to Sun Prince."

But the king refused, saying that the kingdom must go to the oldest son, for it belonged by right to him. Next it would belong by right to the second son, and not until they were both dead could the kingdom go to the third son.

The queen went away, but the king saw that she was not pleased with his answer. He feared that she would do harm to the older princes to get them out of the way of the Sun Prince.

So he called his elder sons and told them that they must go and live in the forest until his death. "Then come back and reign in the city that is yours by right," he said. And with tears he kissed them on the foreheads and sent them away.

As they were going down out of the palace, after saying good-by to their father, the Sun Prince called to them, "Where are you going?"

And when he heard where they were going and why, he said, "I will go with you, my brothers."

So off they started. They went on and on and by and by they reached the forest. There they sat down to rest in the shade of a pond. Then the eldest brother said to Sun Prince, "Go down to the pond and bathe and drink. Then bring us a drink while we rest here."

Now the King of the Fairies had given this pond to a water-sprite. The Fairy King had said to the water-sprite, "You are to have in your power all who go down into the water except those who give the right answer to one question. Those who give the right answer will not be in your power. The question is, 'What are the Good Fairies like?'"

When the Sun Prince went into the pond the water--sprite saw him and asked him the question, "What are the Good Fairies like?"

"They are like the Sun and the Moon," said the Sun Prince.

"You don't know what the Good Fairies are like," cried the water-sprite, and he carried the poor boy down into her cave.

By and by the eldest brother said, "Moon Prince, go down and see why our brother stays so long in the pond!"

As soon as the Moon Prince reached the water's edge the water-sprite called to him and said, "Tell me what the Good Fairies are like!"

"Like the sky above us," replied the Moon Prince.