If you reckon, we reckon. If you pay your debts, we pay ours. If you fly, we conquer, and are content."

The black slave overturned the pan in the middle of the room, and the fish were turned to cinders. Then he stepped proudly back into the wall, which closed round him.

"After having seen this," said the Sultan, "I cannot rest. These fish signify some mystery I must clear up."

He sent for the fisherman. "Fisherman," he said, "the fish you have brought us have caused me some anxiety. Where did you get them from?"

"Sire," he answered, "I got them from a lake which lies in the middle of four hills beyond yonder mountains."

"Do you know this lake?" asked the Sultan of the grand-vizir.

"No; though I have hunted many times round that mountain, I have never heard of it," said the vizir.

As the fisherman said it was only three hours' journey away, the sultan ordered his whole court to mount and ride thither, and the fisherman led them.

They climbed the mountain, and then, on the other side, saw the lake as the fisherman had described. The water was so clear that they could see the four kinds of fish swimming about in it. They looked at them for some time, and then the Sultan ordered them to make a camp by the edge of the water.

When night came the Sultan called his vizir, and said to him, "I have resolved to clear up this mystery. I am going out alone, and do you stay here in my tent, and when my ministers come to-morrow, say I am not well, and cannot see them. Do this each day till I return."

The grand-vizir tried to persuade the Sultan not to go, but in vain. The Sultan took off his state robe and put on his sword, and when he saw all was quiet in the camp he set forth alone.

He climbed one of the hills, and then crossed the great plain, till, just as the sun rose, he beheld far in front of him a large building. When he came near to it he saw it was a splendid palace of beautiful black polished marble, covered with steel as smooth as a mirror.

He went to the gate, which stood half open, and went in, as nobody came when he knocked. He passed through a magnificent courtyard and still saw no one, though he called aloud several times.

He entered large halls where the carpets were of silk, the lounges and sofas covered with tapestry from Mecca, and the hangings of the most beautiful Indian stuffs of gold and silver. Then he found himself in a splendid room, with a fountain supported by golden lions. The water out of the lions' mouths turned into diamonds and pearls, and the leaping water almost touched a most beautifully-painted dome. The palace was surrounded on three sides by magnificent gardens, little lakes, and woods. Birds sang in the trees, which were netted over to keep them always there.

Still the Sultan saw no one, till he heard a plaintive cry, and a voice which said, "Oh that I could die, for I am too unhappy to wish to live any longer!"

The Sultan looked round to discover who it was who thus bemoaned his fate, and at last saw a handsome young man, richly clothed, who was sitting on a throne raised slightly from the ground. His face was very sad.

The sultan approached him and bowed to him. The young man bent his head very low, but did not rise.

"Sire," he said to the Sultan, "I cannot rise and do you the reverence that I am sure should be paid to your rank."

"Sir," answered the Sultan, "I am sure you have a good reason for not doing so, and having heard your cry of distress, I am come to offer you my help. Whose is this palace, and why is it thus empty?"

Instead of answering the young man lifted up his robe, and showed the Sultan that, from the waist downwards, he was a block of black marble.

The Sultan was horrified, and begged the young man to tell him his story.

"Willingly I will tell you my sad history," said the young man.

The Story of the Young King of the Black Isles

You must know, sire, that my father was Mahmoud, the king of this country, the Black Isles, so called from the four little mountains which were once islands, while the capital was the place where now the great lake lies. My story will tell you how these changes came about.

My father died when he was sixty-six, and I succeeded him. I married my cousin, whom I loved tenderly, and I thought she loved me too.

But one afternoon, when I was half asleep, and was being fanned by two of her maids, I heard one say to the other, "What a pity it is that our mistress no longer loves our master! I believe she would like to kill him if she could, for she is an enchantress."

I soon found by watching that they were right, and when I mortally wounded a favourite slave of hers for a great crime, she begged that she might build a palace in the garden, where she wept and bewailed him for two years.

At last I begged her to cease grieving for him, for although he could not speak or move, by her enchantments she just kept him alive. She turned upon me in a rage, and said over me some magic words, and I instantly became as you see me now, half man and half marble.

Then this wicked enchantress changed the capital, which was a very populous and flourishing city, into the lake and desert plain you saw. The fish of four colours which are in it are the different races who lived in the town; the four hills are the four islands which give the name to my kingdom. All this the enchantress told me to add to my troubles. And this is not all. Every day she comes and beats me with a whip of buffalo hide.

When the young king had finished his sad story he burst once more into tears, and the Sultan was much moved.

"Tell me," he cried, "where is this wicked woman, and where is the miserable object of her affection, whom she just manages to keep alive?"

"Where she lives I do not know," answered the unhappy prince, "but she goes every day at sunrise to see if the slave can yet speak to her, after she has beaten me."

"Unfortunate king," said the Sultan, "I will do what I can to avenge you."

So he consulted with the young king over the best way to bring this about, and they agreed their plan should be put in effect the next day. The Sultan then rested, and the young king gave himself up to happy hopes of release. The next day the Sultan arose, and then went to the palace in the garden where the black slave was. He drew his sword and destroyed the little life that remained in him, and then threw the body down a well.