But she never cried. Proclamation was made to all the kingdom, that whosoever should discover the cause of the lake's decrease, would be rewarded after a princely fashion. Hum-Drum and Kopy-Keck applied themselves to their physics and metaphysics; but in vain. Not even they could suggest a cause. Now the fact was that the old princess was at the root of the mischief. When she heard that her niece found more pleasure in the water than anyone else out of it, she went into a rage, and cursed herself for her want of foresight. "But," said she, "I will soon set all right. The king and the people shall die of thirst; their brains shall boil and frizzle in their skulls before I will lose my revenge." And she laughed a ferocious laugh, that made the hairs on the back of her black cat stand erect with terror. Then she went to an old chest in the room, and opening it, took out what looked like a piece of dried seaweed. This she threw into a tub of water. Then she threw some powder into the water, and stirred it with her bare arm, muttering over it words of hideous sound, and yet more hideous import. Then she set the tub aside, and took from the chest a huge bunch of a hundred rusty keys, that clattered in her shaking hands. Then she sat down and proceeded to oil them all. Before she had finished, out from the tub, the water of which had kept on a slow motion ever since she had ceased stirring it, came the head and half the body of a huge gray snake. But the witch did not look round. It grew out of the tub, waving itself backwards and forwards with a slow horizontal motion, till it reached the princess, when it laid its head upon her shoulder, and gave a low hiss in her ear. She started--but with joy; and seeing the head resting on her shoulder, drew it towards her and kissed it. Then she drew it all out of the tub, and wound it round her body. It was one of those dreadful creatures which few have ever beheld--the White Snakes of Darkness. Then she took the keys and went down to her cellar; and as she unlocked the door she said to herself,-- "This _is_ worth living for!" Locking the door behind her, she descended a few steps into the cellar, and crossing it, unlocked another door into a dark, narrow passage. She locked this also behind her, and descended a few more steps. If anyone had followed the witch-princess, he would have heard her unlock exactly one hundred doors, and descend a few steps after unlocking each. When she had unlocked the last, she entered a vast cave, the roof of which was supported by huge natural pillars of rock. Now this roof was the under side of the bottom of the lake.