But Allan could not think their meaning. Only he knew the wild was full of perils; and in his mind he reviewed the precautions he had taken for her welfare. Bit by bit he a.n.a.lyzed them. He knew that he could do no more Now Fate must solve the rest.

He slept at length, not to waken till morning with its garish eye peeped in around the crevices of the rock doorway. Returning from his swim in the pool, he found Beatrice already making breakfast. They ate in silence, overborne with sad and bodeful thoughts.

But now the decision had been made, nothing remained save to execute it. Such a contingency as backing out of an undertaking once begun lay far outside their scheme of things.

The leave-taking was not delayed. They both realized that an early start was necessary if he were to reach the village of the Folk before sleep should a.s.sail him. Still more, they dreaded the departure less than the suspense.

Together they provisioned the Pauillac, back there on the rocky barren, and made sure everything was in order. Allan a.s.sured himself especially that he had fuel enough to last four or five hours.

"In that time," he told the girl, "I can easily reach the rim of the Abyss. You see, I needn't fly northward to the point where we emerged.

That would be only an unnecessary waste of time and energy. I'm positive the chasm extends all the way up and down what was once the Mississippi Valley, and that the Great Central Sea is fed by that and other rivers. In that case, by striking almost due west, I can reach the rim. After that I can volplane easily till I sight the water."

"And then?"

"Then the power goes on again and I scout for the west sh.o.r.e and the village. The sustaining power of that lower-level air is simply miraculous. I realize perfectly well it's no child's play, but I can do it, Beta. I can find the place again. You see, I'm perfectly familiar with conditions down there now. The first time it was all new and strange. This time, after all those months in the Abyss, why, it will be almost like getting back home again. It'll be quite a triumphal return, won't it? The chief getting back to his tribe, eh?"

He tried to speak lightly, but his lips refused to smile. She frankly wept.

"There, there, little girl," he soothed her. "Now let's go back to the cave and see that you're all right and safe. Then I'll be going.

Remember on the third night to kindle the big fire we've agreed on just outside your door on the terrace--the beacon-fire, you know. I'll have to reckon by the chronometer, so as to make the return by night.

The risk of bringing any of the Folk into daylight is prohibitive. And the fire will be tremendously important. I can sight it a long way off. It will guide me home--to you!"

She nodded silently, for she did not trust herself to speak.. Hand in hand they returned along the path they had beaten through the rank half-tropic growth.

One last inspection he gave to all things necessary for her comfort.

Then, standing in the warm, bright sunlight on the ledge before the new home, he took her in his arms.

A long embrace, a parting kiss that clung; then he was gone.

Not long after the girl, still standing there upon the windswept terrace overlooking New Hope River, heard the rapid chatter of the engine high in air and rapidly approaching.

A swift black shadow leaped the canyon and swept away across the plain. Far aloft she saw the skimming Pauillac, very small and black against the dazzling blue.

Did Allan wave a hand to her? Could she hear his farewell cry?

Impossible to tell. Her ears, confused by the roaring of the rapids, her eyes dazzled by the shimmer of the morning heavens and dimmed by burning tears, refused to serve her.

But bravely she waved her cloak on high. Bravely she strove to watch the arrow-flight of the swift bird-man till the tiny machine dwindled to a moving blur, a point, a mere speck on the far horizon, then vanished in the blue.

Choked with anguish, against which all her courage, all her philosophy could not make way, Beatrice sank down upon the rocky ledge and abandoned herself to grief.

Allan was gone at last! Gone--ever to return? At last she was alone in the unbroken wilderness!

CHAPTER XI

"HAIL TO THE MASTER!"

Eleven hours of incessant labor, care, watchfulness and fatigue, three hours of flight and eight of coasting into the terrific depths, brought Allan once more through the fogs, the dark, the heat, to sight of the vast sunken sea, five hundred miles below the surface.

Throughout the whole stupendous labor he thanked Heaven the girl was safely left behind, nor forced to share this travail and exhaustion.

Myriad anxieties and fears a.s.sailed him--fears he had taken good care not to let her know or dream of.

Always existed the chance that something might go wrong about the machine and it be hurled, with him, into that black and steaming sea; the possibility of landing not among the Folk, but in some settlement of the Lanskaarn on the rumored islands he had never seen; the menace of the Great Vortex, of which he knew nothing save the little that the patriarch had told him.

All these and many other perils sought to force themselves upon his mind. But Allan put them resolutely back and, guided by his instruments, his reason, and that marvelous sixth sense of location which his long months of battling with the wilderness had brought to birth in him, swiftly yet carefully slid in vast spirals down the purple, then the black and terrifying void that yawned interminably below.

The beam of his underslung searchlight, shifting at his will, shot its white ray in a long, fading pencil downward as he coasted. And hour after hour it found nothing whereon to rest. It, too, seemed lost forever in the welter of uprushing, choking vapors from the pit.

"Ah! _At last!_"

The cry, dull in that compressed air, burst triumphantly from his lips as the light-ray, suddenly piercing a rift of cloud, sparkled dimly on a surface shiny-black as newly cleft anthracite.

Allan threw in the motor once more and quickly got the Pauillac under control. In a long downward slant he rushed, like some vast swallow skimming a pool, over the mysterious plain of steaming waters. And ever, peering eagerly ahead, he sought a twinkle of the fishermen's oil-flares wimpling across the sunken sea.

Moment by moment he consulted his instruments and the chart he had stretched before him under the gleam of the hooded bulbs.

"Inside of half an hour now," said he, "I ought to sight the first flash of the flares upon the parapet--the glow of the flaming well!"

And a singular eagerness all at once possessed him, a strange yearning to behold once more the strange, fog-shrouded, reeking City of the Lost People, almost as though it had been home, as though these white barbarians had been his own people.

Men! To see men once more! The idea leaped up and gripped him with a powerful fascination.

So it was that when in reality the first faint twinkle of the fishing-boats peeped through the mist--and beyond, a tiny necklace of gleaming points that he knew marked the walls of the town--his heart throbbed hotly and a cry of eager greeting welled from his soul.

Quickly the Pauillac swept him onward. Manoeuvering cautiously, jockeying the great machine with that consummate skill he had acquired from long practice, he soon beheld the dim outlines of the vast cliff, the long walls, the dull reflections of the fire-plume, the slanting slope of beach.

And with keen exultation, thrilled with his triumph and his greeting to the Folk he came to rescue, he landed with a whir upon the reeking slope.

To him, even before he had been able to free his cramped body from the saddle, came swarming the people, with loud cries of welcome and rejoicing. Powerfully the automatics he and Beatrice had used in the Battle of the Walls had impressed their simple minds with almost superst.i.tious reverence. More powerfully still his terrible fight with Kamrou, ending with the death of that great chief in the boiling vat.

And now, acknowledging him their overlord and ruler, whom they had feared to lose forever, they trooped in wild, disordered throngs to do him reverence.

In from the sea, summoned by waving flares, the fishing-boats came plowing mightily, driven by many paddles in the hands of the strange, white-haired men.

Along the beach the townsfolk thronged, and down the causeway, beneath the vast monolithic plinth of the fortified gate, jostled and pushed an ever-growing mult.i.tude.

Cries of "Kromno h'viat! Tai Kromno!" reechoed--"The chief has come back! The great master!"--and the confusion swelled to a mighty roar, close-pent under the heavy mists blued by the naphtha-torches.

But Stern noticed, and rejoiced to see it, that none prostrated themselves. None fell to earth or groveled in his presence. Disorderly and wild the greeting was, but it was the greeting of men, not slaves.

"Thank G.o.d, I've got a race of real men to deal with here!" thought he, surveying the pressing throng. "Hard they may be to rule, and even turbulent, but they're not servile. Rude, brave, bold--what better stock could I have hoped for in this great adventuring?"

For a while even thoughts of Beatrice were crowded back by the excitement of the arrival. In all his wonderful experience never before had he sensed a feeling such as this.

To be returning, master and lord of a race of long-buried people, his own people, after all--to be acknowledged chieftain--to hold their destinies within his hand for good or evil--the magnitude of the situation, the tremendous difficulties and responsibilities, almost overwhelmed him.

He felt a need to rest, and think, and plan, to recuperate from the long journey and to recover poise and strength.