Mechanically, Drew took his handkerchief from his pocket and wiped the cold sweat from his brow. He tried to steady his reeling brain and bring some semblance of order into his thoughts.
This then was the end! Trapped like a rat in a cage, shut out forever from the world of men, doomed to die miserably and hopelessly, – sealed in a tomb while yet alive!
All the dreams he had cherished, all the hopes he had nourished, all the future he had planned – planned with Ruth —
Ruth!
The thought of her wrung his soul with anguish, but it also woke him from his torpor.
He would see her again! He would not surrender! He would not die! Not while a breath remained in his body would he give in to despair. There must be some way out. Fate would not be so cruel as to carry its ghastly joke to the very end. He would call on all his resources. He would struggle, fight, never give up for a moment.
His brain cleared and he took a grip on himself. The blood once more ran hot in his veins. His youth and manhood asserted themselves in dauntless vigor and determination.
The first thing to do was to attack the wall of fresh dirt and rock that hemmed him in. Perhaps it was less thick than it seemed. He had no implement to help him; but his muscular arms and powerful hands might suffice to dig a way to freedom.
He sought to fortify himself by calling to mind all that he had ever read about prisoners digging their way to freedom. Their cases had seemed desperate, but often they had succeeded. He too would succeed – he must succeed. Ruth was outside waiting for him, working for him, praying for him.
He set to work with a dogged resolution and fierce energy that soon had the perspiration flowing from him in streams. Behind him the dirt and debris piled up in a rapidly growing mound. His hands and nails were torn, but his excitement and absorption were so great that no sensation of physical pain was conveyed to his overwrought brain.
At times he stopped to rest a moment and to listen for the stroke of pick or shovel from the opposite side of his living grave. But no sound came to him. He seemed to be in a soundless universe except for the rasp of his own labored breathing.
It was after one of these intervals of listening that he was about to resume his frenzied efforts when he thought he heard a slight sound in the cave behind him.
His heart seemed to stand still for a moment while he strained his ears.
There was no mistake. Some living thing was in the cave besides himself!
Instinctively, his hand gripped the butt of his revolver. Then with a bitter smile he put it back in its place. Why should he hurt or kill anything that was alive? Death seemed sure enough for any occupant of that cave.
He went back stealthily until he reached the wider part of the cave, where he had been when the shock came that had entombed him.
Again that faint sound, undeniably human, came to his ears. Pacing cautiously in the direction from which it came, his foot struck against something soft. He reached down and his hand came in contact with a woman's dress.
In an instant he had gathered the yielding form in his arms.
"Ruth!" he shouted.
"Allen!" came back faintly from her parted lips.
For an instant everything reeled about Drew and his mind was awhirl. Then he laid his burden down and fell frantically to rubbing her hands. Incoherent cries came from his lips as he sought to restore her to complete consciousness.
His vigorous efforts were rewarded a few moments later when Ruth stirred and tried to sit up.
"I must have fainted," she said; "or perhaps I struck my head against the side of the cave when the shock came."
"Don't try to talk yet," said Drew. "Just lie still a few minutes till you are stronger."
She obeyed, while he sat beside her holding her hand.
"I can sit up now," she said after a few minutes. "My head is perfectly clear again."
"Are you sure you didn't hurt yourself when you fell?"
"I think not," she answered, as she passed her hand over her hair. "My head doesn't seem to be bruised or bleeding anywhere. It must have been the shock."
"Thank God it was nothing worse!" returned Drew fervently. "But tell me how you happened to be here. It seems like a miracle. The whole thing staggers me. I thought I left you outside of the cave when I went in."
"So you did," she assented with a touch of her old demureness, "but that doesn't say that I stayed there."
"I see it doesn't," he replied. "But why didn't you?"
"I guess it's because I'm not used to obeying anybody except my father," she answered evasively.
"Tell me the real reason."
"Well," she said, driven to bay, "I was afraid there might be something dangerous in here and – and – I didn't want you to have to face it alone – and" – here she paused.
Drew's heart beat wildly.
"And so you came in to stand by my side," he said with emotion. "Ruth, Ruth – "
"But now," said Ruth hastily, following up her advantage, "we must hurry and get back to the others. Father will begin to worry about me."
Anguish smote Drew. Ruth had evidently not the slightest idea that anything stood between her and freedom. How could he break the dreadful news to her? He felt like an executioner compelled by some awful fate to slay the one he loved most dearly.
"You mustn't look at me after we get outside until I've had a chance to arrange my hair," she warned him gaily. "I must look a perfect fright."
Every innocent word was a stab that went straight to the man's heart.
His mind was a tumult of warring emotions. At first there had been a wild delight when he had found himself in the presence of his heart's desire, after he feared that he would never hear her voice again. In the excitement of bringing her back to consciousness and listening to her story, the fearful peril in which they stood had been relegated to the background. Now it came back at him with re-doubled force, and he had to close his lips tightly to suppress a groan.
He could have died alone, if escape had proved impossible, and met death like a man. But to have to watch Ruth die – die perhaps after enduring unspeakable suffering – the mere thought threatened to drive him mad.
And she was here because she had feared that he might encounter danger and wanted to meet it at his side when it came. But for that courageous impulse, she might at this moment be safe and sound out under the open sky instead of being buried alive in this island tomb.
Moreover her very presence here made their danger all the greater. There was little chance now of help coming to them from the outside. No doubt Tyke and Captain Hamilton would grow uneasy at their absence and look them up – probably they were hunting for them now. But they did not know of the existence of the cave, and now that the entrance was closed there was not the slightest chance of finding them. They would explore the mountain side, search every foot of the island, but their quest would be doomed to failure from the beginning.
While these thoughts had been hurrying through his tortured brain, Ruth had arranged her disordered hair as best she could in the darkness and stood ready to go.
"Well, Allen, what are we waiting for?" she asked. "You men are always complaining that the girls keep you waiting, but this time you're the guilty one."
He tried to adopt her bantering mood, but failed miserably.
"I'll have to throw myself on your mercy," he said. "But wait here a moment, Ruth, till I see if the path is clear."
Even in the darkness, he was almost conscious that she looked at him in surprise. But he needed time to get his thoughts together and decide on the easiest way of breaking the terrible news that weighed on his heart.
He cudgeled his brain to find the gentlest, most reassuring phrases that would alarm her least and keep up her courage. But there was the stark, hideous fact that could not be blinked or dodged, and when at last his lagging steps returned, he was no nearer a solution of his problem than before.
"I declare you sound like Tyke coming along the passage," Ruth laughed merrily. "They say bad news travels fast. So your news must be good, or you wouldn't be coming so slowly."
"I only wish you were right," he said, grasping at the opening. "But to tell the truth my news isn't any too good. Oh, nothing to be alarmed about," he added hastily, as he caught her stifled exclamation. "A little loose earth seems to have come down the slope of the hill and blocked up the entrance. I'll get to work at it and clear it out in a jiffy."
He tried to throw a world of confidence into his tone, but it failed to ring true. In the darkness he heard Ruth catch her breath.
"Let's go and see just how bad it is," was all she said, and Drew with a chill in his heart, led the way.
"What is this dirt in here?" asked Ruth, as she stumbled over a mound that Allen had thrown behind him in his frantic digging.
"Oh, that's some that I've dug out already," Allen replied with assumed carelessness. "I just wanted to find out how hard the dirt was and whether it would give way easily. It's fresh and soft and we'll get the whole lot out of our way in no time."
He was about to start in again at the task when Ruth laid her hand upon his arm.
"You didn't dig all this out in that minute you were away from me just now," she said quietly. "You must have been working while I lay in there unconscious. Come now, Allen, tell me the whole truth. Remember that I am a sailor's daughter and am not afraid to face things, no matter how bad they may be. The cave entrance is badly blocked up, isn't it?"
"God bless your staunch, plucky heart, Ruth," blurted out Drew, his own heart kindling at her courage. "You're one woman in a thousand, yes, in a million. I might have known you'd face the truth without weeping or hysterics. You're right about the landfall. I'm afraid it's a heavy one. I've been digging at it for some time without making much impression. But after all it's all guess-work and it may not be so thick as it seems to be. We may let daylight through at any minute. At any rate I'm going at it like a tiger. I worked hard before when I thought I was alone, but now that I've got you to look out for I'll do ten times as much. I've only begun to fight. We're just going to get out of this and that's all there is about it."
"And I'll help you," cried Ruth.
"Not with those little hands," replied the man vehemently. "You just stand back there and pray while I do the work."
"Those little hands, as you call them, are stronger than you think. I'm going to work with all my might and help you out. And that won't keep me from praying either. I guess the cave women used to work and fight just about as much as the men, and I'm a cave woman now if I never was before."
Again Drew sought to deter her, but she was determined and he had to let her have her way. The only concession he could gain was to make her put on a pair of buckskin gloves that dangled at his belt. They were woefully large for her shapely hands and at any other time would have furnished a subject for jesting. But nothing now was further from their minds than laughter. They were engaged on a grim work of life or death and both of them knew it.
But though brave, there was a limit to Ruth's physical strength, and under such strenuous and unaccustomed effort it was not long before that limit was reached. Drew discerned it coming before Ruth herself would admit it.
He took her gently but firmly by both wrists and fairly compelled her to sit down on one of the mounds, where he improvised a seat that enabled her to rest her back against one side of the cave. Then he returned to the work with redoubled vigor, tossing the dirt aside as though he were a tireless steam shovel.
But though Ruth's body was resting, her mind was working actively, darting hither and thither in an effort to find a way of escape from their fearful predicament.
"Allen," she said, as he stopped for an instant to rest, "come here and sit down beside me."
He had never hesitated before at accepting that coveted invitation, but just now he wondered whether he ought to stop even for an instant. His herculean efforts had brought him to the very edge of collapse, but he was feverishly eager to keep on.
"Ought I, Ruth?" he questioned. "Every minute now is precious, you know."
"I know it," she admitted, "but you'll drop dead from exhaustion if you don't stop and rest. You must rest."
The gentle tyrant had her way and Drew yielded. He sat down beside her, his chest contracting and expanding under the stress of his labored breathing.
"Poor boy!" she said softly, and Drew thrilled at the sympathy in her tone.
"I've been thinking, Allen, that perhaps we had better not rely entirely on your digging for getting out of here," she continued. "It's all a guess as to how thick that wall of earth and rock is, and we may be using on it the strength that we need for other things. If you had an implement of some kind it would be different. But with your bare hands together with what little help I can give you it may be impossible."
"Yes," he was forced to concede, "I can't go on forever. Sooner or later my strength will give out. But what can we do but keep on trying? I'd go raving mad if I didn't keep on taking the one little chance we have."
"But is it the only chance we have?" she argued. "Did you bring your revolver with you?"
For answer he took it out of his belt and put it in her hand.
"Have you any extra cartridges?" she asked.
"Not a single one, but the revolver itself is fully loaded. That's just six we have to count on."
She was silent for a moment.
"There isn't any likelihood we'll have to use these for defending ourselves," she said at length. "There doesn't seem to be any living thing in this cave of which we need to be afraid. But, nevertheless, suppose we keep two for emergencies. That would give us four to experiment with, wouldn't it?"
"Experiment? How?" he inquired.
"I was thinking that perhaps father" – here her voice faltered a little – "and Tyke might be somewhere in the neighborhood hunting for us. If we should discharge the revolver they might possibly hear one or more of the shots and get some idea of where we were. I know it's only a forlorn hope, but we've got to try everything just now."
"It's a good idea!" exclaimed Drew, though he knew in his heart how slender a chance it offered. "And in the meantime, I'll keep on digging, so that if the shots aren't heard we won't be any worse off anyway. You fire the four shots at intervals of a minute or two and we'll see what happens."
He went savagely to work again and Ruth at short intervals discharged the revolver. The noise and the echoes in that compressed space were deafening and it certainly seemed as though the sound ought to penetrate to the world outside.
But though they fairly held their breath as they listened for a response, no answering sound penetrated from the outside into the cavern, and their hearts sank as they realized that one more of their few hopes had failed them.
"It's of no use," observed Ruth sadly, as she handed the weapon back to Allen. "Either they didn't hear the shots, or, if they did, they thought it was some sound made by the volcano. We'll have to try something else."
Both were silent for a few moments, immersed in bitter thoughts that were as black as the darkness that surrounded them.
"Can you ever forgive me, Ruth, for having gotten you into such a trap as this?" he burst out suddenly.
"You didn't get me in it," protested Ruth. "I came in of my own accord."
"I don't mean that," explained Drew. "But you tried to persuade me not to enter the cave in the first place, and if I'd only had sense enough to listen to you; we'd both of us be out in the sunlight at this minute. Headstrong fool that I was!" he ended in an agony of self condemnation.
"Now don't blame yourself a bit for that, Allen," said Ruth earnestly. "You only did what you thought you ought to do, and ninety-nine times out of a hundred no harm would have come of it."
"And it was our luck to strike the hundredth time," replied Drew bitterly.
"Besides," said Ruth with a trifle of hesitation, "I think I'd have been a little disappointed at the time if you had done as I asked. I'd have felt that perhaps in your secret heart you did it apparently to please me, but really because you were glad enough not to have to take any chances of what you might meet in here."
Drew was somewhat puzzled at this bit of feminine psychology, but he gathered some comfort from it, and this was perhaps after all the result that Ruth was seeking.
"Do you notice, Allen, how fresh the air seems to be in here?" she asked.
"I've been wondering at that," he answered. "To tell the truth my worst fear has been that it would get too close and foul for us to breathe. But it seems to be just as sweet now as it was at the beginning."
"What do you suppose is the reason?"
"It must be that the cave is a little larger than it seems to be. It seemed to be getting bigger and bigger as I went further into it. If that is so, it accounts for the fact that the air supply has not yet begun to be vitiated."
"But mayn't there be any other reason?" she asked.
"I can't think of any other," he answered. Then as a thought suddenly struck him, he jumped as though he had been shot.
"Why didn't I think of that before?" he fairly shouted. "There may be another entrance!"
Unaware of the possible tragedy that was being developed within a few hundred yards of them, Tyke and Captain Hamilton had kept on digging in the excavation. For Tyke had refused to be kept out of the work of recovering the treasure, and when Drew had strolled off with the intention of discovering what had frightened Ruth and had been followed shortly after by the latter, the old man had seized Drew's abandoned shovel and had gone lustily to work.
"Too much of a strain on that game leg of yours to be heaving up those shovelfuls," the captain protested.
"Nary a bit of it," answered Tyke. "I ain't ready to be put on the shelf yet, not by a blamed sight, and I guess if it came to a showdown, Rufe, my muscles are as good as yours."
"You're a tough old knot all right," admitted Captain Hamilton, his eyes twinkling. "But there's no sense in your doing Allen's work. Where in thunder has the boy gone anyway?"
"Oh, he'll turn up in a minute or two," returned Tyke. "Wherever he is you can bet your boots he's doing something connected with this here work of treasure seeking. It simply ain't in that boy to lay down on any job."
"Drew makes a hit with you all right," laughed the captain.
"And why shouldn't he?" asked Tyke belligerently. "He's been with me for some years now, and I've had plenty of chances of sizin' him up. If there was a yellow streak in him, I'd have found it out long ago. If I'd had a son of my own, I wouldn't have asked for him to be any better fellow than Allen is, and nobody could say any more'n that. He's got grit an' brains an' gumption, an' more'n that he's as straight as a string."
"Go ahead," laughed the captain, as Tyke paused for want of breath. "Don't let me stop you."
"I don't mind tellin' you, Rufe, what I've never told yet to any human soul," continued Tyke, waxing confidential, "an' that is that when I lay up in my last harbor, Allen is goin' to come into everything I've got. He don't know it himself yet, but I've got it down shipshape in black and white an' the paper's in my office safe."
"He's a lucky fellow," commented the captain briefly.
"An' let me tell you another thing, Rufe," said Tyke, "an' that is that Allen would make not only a good son, but a mighty good son-in-law."
He nudged the captain in the ribs as he spoke, with the familiarity of old comradeship.
"Lay off on that, Tyke," said the captain, flushing a little beneath his bronze.
"You don't mean to say that you haven't seen the way the wind was blowin'?" rejoined Tyke incredulously. "Why, any one with a pair of good eyes in his head can't help but see that those two are just made for each other."
"I'm not blind, of course," returned the captain, who now that the ice was broken seemed not averse to talking the matter over with his old comrade. "I know of course that I can't keep Ruth forever and that some time some fellow will lay me aboard and carry her off right from under my guns. And I'm not denying that up to a few days ago, I'd rather it would have been young Drew than any one else. But now – " here he paused.
"Well, but now," repeated Tyke.
"You know just as well as I do what I'm meaning," blurted out Captain Hamilton. "This matter of Parmalee's death has got to be cleared up before I'd even consider him in connection with Ruth. You can't blame me for that, Tyke."
The old man's face clouded.
"I ain't exactly blaming you, Rufe," he conceded, for despite his ardent partisanship of Allen, he could realize how Captain Hamilton as a parent must feel; "but I'm mortal sure that thing will be cleared up before long. You know just as well as I do that Allen didn't kill Parmalee any more than you or I did."
"That's what I want to believe," returned the captain. "I mean," he corrected, as he saw the choleric flash in Tyke's eyes, "that's what I do believe."
"It's that scoundrel, Ditty, that did it himself," growled Tyke savagely. "He cooked up the whole thing and then shoved it off on Allen. You've seen enough of him since then to know that he's capable of anything."
"Yes," admitted the captain, "he's a dirty dog. But don't you see, Tyke, that even allowing that Allen is innocent, he's been charged with doing it. And to lots of people, that's just about the same as though he were actually guilty. Then, too, the matter will have to be tried out in the courts. Allen will have to stand trial and even if he gets off, as I hope he will, there'll be a cloud on his name as long as he lives. How could I let Ruth marry a man who had been charged with murder and who got off because there wasn't evidence enough to convict?"
"Mebbe Ruth would be willing to take the chance," persisted Tyke stubbornly.
"Maybe she would," agreed the captain, "but she'd never do it with my consent. She's too good and sweet and pretty a girl to link her life with a man whose name was smirched. I wouldn't stand for it for a minute."
Tyke was framing a reply when suddenly the earthquake which wrought such dire results to the two of whom they were speaking shook the ground. The two men were thrown against each other and both went in a heap to the bottom of the ditch. The breath was knocked out of their bodies, and every thought was driven from their minds except the instinctive desire to remain alive until nature's onslaught had ceased.
When the worst was over, they scrambled to their feet, brushed the dirt from their clothes and faces, and stared grimly at each other.
"If it didn't seem too conceited to think that all this fuss was being made on our account," growled the captain, as he picked up his spade. "I'd surely make up my mind that something was trying to shoo us away from this treasure hunting."
"Yes," agreed Tyke. "Now, if I was superstitious – "
"I wonder," broke in the captain with sudden alarm, as he thought of the two errant members of the party, "where Ruth and Allen were when this quake happened."
"The only safe thing is to say that they were together somewhere," said Tyke. "I notice that they're never far apart. Don't you worry, Rufe. Allen will take good care of her."
But the captain was already climbing out of the excavation. He gave Tyke a hand and helped him up.
"Where did you last see them, Tyke?" Hamilton asked, as his eyes scanned the surrounding landscape without catching a glimpse of the figures he sought.
"The last I saw of Allen he was going down toward them trees," replied Tyke, indicating a corner of the jungle, "an' a little later, out o' the corner of my eye, I saw Ruth going in the same direction. Now, don't fret, Rufe. They'll turn up as right as a trivet in another minute or two."
"The jungle!" gasped the captain in alarm. "Don't you see, Tyke, that some of those trees have been shaken down. Maybe they've been caught under one of them. Hurry! hurry!"
He set off, running hurriedly, and Tyke hastened after him as fast as he could.
They were soon at the jungle's edge. Several giant trees had fallen victims to the earthquake's wrath, but a frantic searching among their trunks revealed no traces of the missing ones.
The captain wiped his brow and gave a great sigh of relief.
"So far, so good!" he exclaimed. "They've escaped that danger anyway. I had a fearful scare. I don't mind admitting that my heart was in my mouth for a minute."
"Same here," assented Tyke, who despite his faith in Drew's resourcefulness had secretly shared the captain's alarm. "But if they're not here, where in Sam Hill can they be?"
They raised their voices in a shout, but no answering sound came back.
Several times they repeated the call, but all to no purpose.
"Strange," muttered the captain uneasily. "It isn't like Ruth to go off to any distance without telling me about it beforehand."
"Nor Allen neither," put in Tyke loyally.
"You might almost think the earth had swallowed them up," pursued the captain, little thinking how near he was to guessing the truth.
"Well, the only thing to do is to keep looking for 'em until we find 'em," said Tyke. "You take that side of the hill, Rufe, and I'll take the other. We'll come across them probably before we meet up with each other."
The two men separated on their quest, calling out at frequent intervals. It did not take them long to skirt the base of the whale's hump, but when at last they met each saw only disappointment and a growing alarm in the eyes of the other.
"We'll have to try it again and make a wider circle," exclaimed Hamilton desperately. "We've simply got to come across them somewhere around here."
"Of course we shall," said Tyke heartily, though the crease in his forehead belied the confidence of his words.
Once more they made the round of the hump, this time ranging out much further from the base. Still their efforts were fruitless, and when they met once more, neither tried to disguise from the other the growing panic in his heart.
"Ruth, Ruth!" groaned the captain.
"Come now, Rufe, brace up," comforted Tyke. "While there's life there's hope."
"That's just it," replied the captain. "But how do we know there is life? Something serious must have happened to them, or they'd never stay away like this. They'd know we'd be worried about them after that shock came and they couldn't have come back to us quick enough, if they'd been able to come."
Tyke could not deny the force of this.
"Well now, Rufe, let's get down to the bottom of this," he said. "I'm afraid just as you be that they're in trouble of some kind. Now what could make trouble for them on this island? There ain't any wild beasts of any account here, do you think?"
"Not that I ever heard of," replied the captain. "We're too far south for mountain lions and too far north for jaguars. There may be an occasional wildcat, but it wouldn't be likely to attack a single person let alone two together. There may be snakes here though for all I know."
"Nothing doing there," said Tyke decisively. "Mebbe there's boas, but if so there're a mild and harmless kind, such as those they make household pets of in some places to keep away the rats. And if there are any poisonous snakes, it's against all likehood that both Ruth and Allen would be bitten. One of them would come scurrying to us at once for help for the other.
"Besides," he went on, "I know that Allen had his revolver along with him and he's a sure shot. No, I don't think we have to worry about animals or snakes."
"What is there left then?" groaned the captain.
"There's two things left," replied Tyke reflectively. "One of 'em is old nature herself. What she can do is a plenty, as we've seen since we come to this island – ."
"This infernal island," broke in the captain viciously. "I wish to heaven we'd never seen it. I wish some one of these earthquakes had sent it to the bottom of the sea."
"I don't blame you much," assented Tyke. "But being here, we've got to take things as they come. Now, as I was saying, old nature may have taken a hand in causing trouble for the two young folks. But for the life of me I don't see how. We've already seen that they weren't caught under those falling trees. And there didn't any lava flow come with that last quake. And that being so I can't see where nature's got into the game.
"Now," he continued, "there's just one thing left – and that's men! There may be some natives on this island that feel sore at our butting in on 'em and they may have come across them youngsters and captured 'em."
"I don't think that's at all likely," rejoined the captain. "There'd certainly have been some sign of them, some boat, some hut or something else of the kind. But we haven't seen hide or hair of anything since we landed. The boat's crew, too, have been roaming over the island and they'd have reported to us anything they'd seen that looked as though people lived in this God-forsaken spot."
"Yes," assented Tyke. "And it stands to reason that Allen with his automatic would have put up a fight and we'd have heard the sound of shots. But there are other men besides natives on the island."
"What do you mean?" asked the captain in surprise.
"I mean Ditty and his gang of water rats," replied Tyke.
"You don't think that skunk would dare – " spluttered the captain.
"I think that one-eyed rascal would dare almost anything," answered Tyke. "And it struck me as barely possible that he might have come sneaking around to see what we were doing and perhaps run across Allen and Ruth. There's bad blood there, as you know, and it wouldn't take much to bring about a scrap.
"Not that I think that has happened," he went on, "because it isn't likely that Ditty's plans are far enough forward yet for him to show his hand. Still I may be wrong. I tell you what I think you'd better do. You can git around faster than I can with this old game leg of mine. Suppose you run back to the shore and see if Ditty is hanging around there. If he is and everything seems shipshape we can leave him out of our calculations. Then we'll have to figure out what we're to do next."