if the whole band came on the following night, the affair would probably be settled with but very little trouble, no matter how large the party in the cave might be. It was not necessary to look any further for the escaped negro. Of course, he had been picked up by these people.
The three beasts reached their camp about daybreak, and everybody was soon awakened and the tale was told.
"It is a comfort," said the leader, lighting the stump of a black pipe which he thrust under his great mustache, and speaking in his native tongue, which some of them understood, and others did not, "to know that to-night's work is all cut out for us. Now we can take it easy to-day, and rest our bones. The order of the day is to keep close. No straggling, nor wandering. Keep those four niggers up in the pigeonhole. We will do our own cooking to-day, for we can't afford to run after any more of them. Lucky the fellow who got away can't speak English, for he can't tell anything about us, any more than if he was an ape. So snooze to-day, if you want to. I will give you work to do for to-night."
CHAPTER VII
GONE!
That morning, when the party in the cavern had had their breakfast, with some hot tea made on a spiritlamp which Mrs. Cliff had brought, and had looked cautiously out at the sunlit landscape, and the sea beyond, without seeing any signs or hearing any sound of wicked men, there came a feeling of relief. There was, indeed, no great ground for such a feeling, but as the Rackbirds had not come the day before nor during the night, perhaps they would not come at all. It might be they did not care whether the black man ran away or not. But Captain Horn did not relax his precautions. He would take no chances, and would keep up a watch day and night.
When, on the night before, the time had come for Ralph's watch to end, his sister had awakened him, and when the captain, in his turn, was aroused, he had not known that it was not the boy who had kept watch during his sleep.
In the course of the morning Mrs. Cliff and Edna, having been filled with an intense desire to see the wonderful subterranean lake, had been helped over the rocky barrier, and had stood at the edge of the water, looking over to where it was lighted by the great chasm in the side of the rocks, and endeavoring to peer into the solemn, cavernous distance into which it extended on the right. Edna said nothing, but stood gazing at the wonderful scene—the dark, mysterious waters before her, the arched cavern above her, and the picture of the bright sky and the tops of the distant mountains, framed by the sides of the great opening which stretched itself upward like a cathedral window on the other side of the lake.
"It frightens me," said Mrs. Cliff. "To be sure, this water was our salvation, for we should have been dead by this time, pirates or no pirates, if we had not found it. But it is terrifying, for all that. We do not know how far it stretches out into the blackness, and we do not know how far down it goes. It may be thousands of feet deep, for all we know. Don't go so near the edge, Ralph. It makes me shudder."
When the little party had returned to the cavern, the captain and the two ladies had a long talk about the lake. They all agreed that the existence of this great reservoir of water was sufficient to account for the greenness and fertility of the little plateau outside. Even if no considerable amount of water trickled through the cracks in the rocks, the moisture which arose from the surface of the water found its way out into the surrounding atmosphere, and had nourished the bushes and vines.
For some time they discussed their new-found water-supply, and they were all glad to have something to think about and talk about besides the great danger which overhung them.
"If it could only have been the lake without the Rackbirds," said
Mrs. Cliff.
"Let us consider that that is the state of the case," remarked Edna. "We have the lake, and so far we have not had any Rackbirds."
It was now nearly noon, and the captain looked around for Ralph, but did not see him. He went to search for him, and finding that the boy had not passed Maka, who was on watch, he concluded he must have gone to the lake. There was no reason why the restless youth should not seek to enliven his captivity by change of scene, but Captain Horn felt unwilling to have any one in his charge out of sight for any length of time, so he went to look for Ralph.
He found no one on the rocky shelf. As there had been little reason to expect a water attack at this hour, Mok had been relieved from guard for a meal and a nap. But as Ralph was not here, where could he be? A second glance, however, showed the captain the boy's clothes lying close by, against the upright side of the rock, and at that moment he heard a cry. His eyes flashed out toward the sound. There on the other side of the water, sitting on a bit of projecting rock not far from the great opening in the cave, he saw Ralph. At first the captain stood dumb with amazement, and he was just about to call out, when Ralph shouted again.
"I swam over," he said, "but I can't get back. I've got the cramps. Can't you make some sort of a raft, and come over to me! The water's awfully cold."
Raft, indeed! There was no material or time for anything of the kind. If the boy dropped off that bit of rock, he would be drowned, and the captain did not hesitate a moment. Throwing aside his jacket and slipping off his shoes, he let himself down into the water and struck out in Ralph's direction. The water was, indeed, very cold, but the captain was a strong swimmer, and it would not take him very long to cross the lake at this point, where its width was not much more than a hundred feet. As he neared the other side he did not make immediately for Ralph. He thought it would be wise to rest a little before attempting to take the boy back, and so he made for another point of rock, a little nearer the opening, urging the boy, as he neared him, to sit firmly and keep up a good heart.
"All right," said Ralph. "I see what you are after. That is a better place than this, and if you land there I think I can scramble over to you."
"Don't move," said the captain. "Sit where you are until I tell you what to do."
The captain had not made more than two or three strokes after speaking when his right hand struck against something hard, just below the surface of the water. He involuntarily grasped it. It was immovable, and it felt like a tree, a few inches in diameter, standing perpendicularly in the lake. Wondering what this could be, he took hold of it with his other hand, and finding that it supported him, he let his feet drop, when, to his surprise, he found that they rested on something with a rounded surface, and the idea instantly came into his mind that it was a submerged tree, the trunk lying horizontally, from which this upright branch projected. This might be as good a resting-place as the rock to which he had been going, and standing on it, with his head well out of the water, he turned to speak to Ralph. At that moment his feet slipped from the slimy object on which he stood, and he fell backward into the water, still grasping, however, his upright support. But this did not remain upright more than an instant, but yielded to his weight, and the end of it which he held went down with him. As he sank, the captain, in his first bewilderment, did not loosen his grasp upon what had been his support, and which still prevented him from sinking rapidly. But in a moment his senses came to him, he let go, and a few downward strokes brought him to the surface of the water. Then he struck out for the point of rock for which he had been aiming, and he was soon mounted upon it.
"Hi!" shouted Ralph, who had been so frightened by the captain's sudden sinking that he nearly fell off his narrow seat, "I thought something had pulled you down."
The captain did not explain. He was spluttering a little after his involuntary dive, and he wanted to get back as soon as possible, and so wasted no breath in words. In a few minutes he felt himself ready for the return trip, and getting into the water, he swam to Ralph. Following the directions given him, the boy let himself down into the water behind the captain, and placed his hands upon the latter's hips, firmly grasping the waistband of his trousers. Then urging the boy not to change his position, nor attempt to take hold of him in any other way, the captain struck out across the lake, Ralph easily floating behind him.
When they stood upon the shelf