"I will give it time," he thought, "and come back to-morrow to see if it is flooded."

That night, as he lay on his little pallet, looking through the open front of his tent at the utter darkness of the night, the idea struck him that it was strange that he was not afraid to stay here alone. He was a brave man,—he knew that very well,—and yet it seemed odd to him that, under the circumstances, he should have so little fear. But his reason soon gave him a good answer. He had known times when he had been very much afraid, and among these stood preeminent the time when he had expected an attack from the Rackbirds. But then his fear was for others. When he was by himself it was a different matter. It was not often that he did not feel able to take care of his own safety. If there were any danger now, it was in the daytime, when some stray Rackbirds might come back, or the pilferer of the mound might return with companions. But if any such came, he had his little fort, two pistols, and a repeating rifle. At night he felt absolutely safe. There was no danger that could come by land or sea through the blackness of the night.

Suddenly he sat up. His forehead was moist with perspiration. A shiver ran through him, not of cold, but of fear. Never in his life had he been so thoroughly frightened; never before had he felt his hands and legs tremble. Involuntarily he rose and stood up in the tent. He was terrified, not by anything real, but by the thought of what might happen if that lake cave should fill up with water, and if the ancient valves, perhaps weakened by his moving them backward and forward, should give way under the great pressure, and, for a second time, a torrent of water should come pouring down the Rackbirds' ravine!

As the captain trembled with fear, it was not for himself, for he could listen for the sound of the rushing waters, and could dash away to the higher ground behind him; but it was for his treasure-bags, his fortune, his future! His soul quaked. His first impulse was to rush out and carry every bag to higher ground. But this idea was absurd. The night was too dark, and the bags too heavy and too many. Then he thought of hurrying away to the caves to see if the lake had risen high enough to be dangerous. But what could he do if it had? In his excitement, he could not stand still and do nothing. He took hold of one end of his trunk and pulled it out of his tent, and, stumbling and floundering over the inequalities of the ground, he at last got it to a place which he supposed would be out of reach of a sudden flood, and the difficulties of this little piece of work assured him of the utter futility of attempting to move the bags in the darkness. He had a lantern, but that would be of little service on such a night and for such a work.

He went back into his tent, and tried to prevail upon himself that he ought to go to sleep—that it was ridiculous to beset himself with imaginary dangers, and to suffer from them as much as if they had been real ones. But such reasoning was vain, and he sat up or walked about near his tent all night, listening and listening, and trying to think of the best thing to do if he should hear a coming flood.

As soon as it was light, he hurried to the caves, and when he reached the old bed of the lake, he found there was not a drop of water in it.

"The thing doesn't work!" he cried joyfully. "Fool that I am, I might have known that although a man might open a valve two or three centuries old, he should not expect to shut it up again. I suppose I smashed it utterly."

His revulsion of feeling was so great that he began to laugh at his own absurdity, and then he laughed at his merriment.

"If any one should see me now," he thought, "they would surely think I had gone crazy over my wealth. Well, there is no danger from a flood, but, to make all things more than safe, I will pull down this handle, if it will come. Anyway, I do not want it seen."

The great bar came down much easier than it had gone up, moving, in fact, the captain thought, as if some of its detachments were broken, and when it was down as far as it would go, he came away.