Suddenly something gave behind him--a door, as it seemed, broken off its hinges by the mob pressure. Jim was hurled backward, and fell heavily down a flight of stone stairs, bringing up against a stone bal.u.s.trade. He got up, unconscious of his bruises, ran to the top of the flight, and saw the dim square of palest twilight where the door had been.

But over him he could faintly see the stairs and the bal.u.s.trade, winding away to what seemed immeasurable height. That stairway must lead to the top of the building, and thence there should be some access to the amphitheatre. Jim turned toward it.

Suddenly a tremendous uproar filled the streets, yells, the clicking grunts of the Drilgoes, the screams of the panic-stricken populace.

The invaders had arrived, and they were sweeping all before them. No chance of recognition in that darkness. Lucille! Shouting her name, Jim began to ascend the stairs in leaps of three at a time.

But long before he reached the top he was ascending one by one, with straining limbs and laboring breath. Red slaughter down below, a very inferno of sound; above, that shadowy stairway, still extending almost to the heavens. Step after step, flight beyond flight!

Jim's lungs were bursting, and his heart hammering as if it would break his chest. One flight more! One more! Another! Suddenly he realized that his task was ended. In place of the stairs stood a vast hall, and beyond that another hall, dim in the faint light that filtered through the gla.s.s above.

Jim thought he remembered where he was. Beyond that next hall there should be the tongue of flooring, crossing the amphitheatre and joining the platform of the idols. But he stopped suddenly as he emerged, not upon the tongue, but upon still another stairway.

He had gone astray, and out of his bursting lungs a cry of rage and despair went up. For a moment he stood still. What use to proceed further?

And then, amazingly, there came what might have been a sign from heaven. Down through a small, square opening overhead, no larger than a ventilator, it came ... a glimmer of violet flame!

And Jim hurled himself like a madman against the stairs, and surmounted them with two bounds. There were no more. Instead, Jim found himself looking down into the amphitheatre.

The thick walls had cut off all sound from his ears, save a confused murmur, but now a hideous uproar a.s.sailed them. The whole floor of the amphitheatre was a ma.s.s of moving shadows, of slayers and slain.

The Drilgoes had broken in and trapped the mult.i.tudes that had taken refuge there. Their fearful stone-tipped spears thrust in and out, to the accompaniment of their savage howls and the screams of the dying.

Never has such a shadow-play been seen, perhaps, as that below, where death stalked in dense darkness, and the slayer did not even see his victim. Only the thrust of spears, the soft, yielding flesh that they encountered, the scream, the wrench of stone from tissue, and the blended howl of triumph and scream of despair.

Yet only for a moment did Jim turn his eyes upon that sight. For he knew where he was now. He had emerged upon the other side of the amphitheatre, upon the platform where he had seen the priests and dignitaries gathered when he was led forward to be sacrificed.

There, in the rear, were the hideous, shadowy G.o.ds, looming up out of the darkness, their outstretched arms interlaced. And there upon the platform was the Atom Smasher, a little thread of violet light seeping out of the central tube.

Beside it stood a group of figures, impossible to distinguish in the darkness, but of a sudden Lucille's scream rang out above the din below.

With three leaps Jim was at her side. He saw the girl, Tode, and Parrish, struggling in the grasp of a dozen priests. They were dragging them toward the idols, and Jim understood what that scene portended.

In despair at the irruption of the Drilgoes, the priests were seeking to propitiate their G.o.ds by sacrificing the three strangers whom they held responsible for all their woes.

Jim caught Lucille in his arms, shouting her name. She knew him, turned toward him. Then one of the priests, armed with a great stone-headed club--for no metal is permitted within the precincts of the G.o.d Cruk--struck at him furiously.

Jim leaped aside, letting the club descend harmlessly upon the floor.

He shot out his right with all his strength behind it, catching the priest upon the jaw, and the man crumpled.

Whirling the club around his head, he fought back the fanatics, all the while shouting to Tode to start the Atom Smasher. In such a moment he only remembered that Tode was a white man, and of his own generation.

He struck down three of the priests; then he was seized around the knees from behind, and fell heavily. The club was wrenched from his hand. In another moment Jim found himself helpless in the grasp of the Atlanteans.

As he stopped struggling for a moment, to gather his strength for a supreme effort, he heard a whir overhead, and saw the arms of the stone G.o.ds begin their horrible revolution. The priests had started the machinery. And high above the din below rang out the wild chant of the high priest.

Jim saw him now, a figure poised upon a platform behind the arms, his own arms raised heavenward.

"Aiah! Aiah! Aiah!"

Jim was being dragged forward, with Lucille beside him, old Parrish following, still making a futile struggle for life, while pitiful screeches issued from his mouth.

Jim saw the revolving arms descend within a foot of his head. One more fight--one more, the last.

Suddenly, with loud yells, a band of Drilgoes leaped forward from the head of the stairs and rushed upon the struggling priests and victims.

And, dark as it was, Jim recognized their leader--Cain.

And Cain knew Lucille. As the priests rallied for a desperate resistance, Cain hurled his great body through the air, landing squarely upon the shoulders of the priest nearest the revolving arms, and knocking him flat.

Then the arms caught priest and Drilgo, and the steel hooks dug deep into their flesh. A screech of terror, a howl that reverberated through the amphitheatre, and nothing remained of either but a heap of macerated flesh.

But in that instant Jim had fought free again. He caught Lucille and dragged her back toward the Atom Smasher.

Tode had already broken from his captors and was working at it frantically.

"Hold on!" screeched old Parrish. "Hold on!"

They had a moment's leeway. The Drilgoes had driven the priests back into the hooks. With awful shrieks the fanatics were yielding up their lives, in the place of their selected victims.

But more Drilgoes were pouring up the stairs. A moment's leeway, and no more, before the savage band would impale the four upon their stone-pointed spears. There was not the slightest chance that they would be able to make their ident.i.ty known.

"For G.o.d's sake hurry!" Jim yelled in Tode's ear.

The wheels were revolving, a stream of violet light, leaping out of the central tunnel, cast a lurid illumination upon the scene.

But it was too late. A score of Drilgoes, with leveled spears, were rushing on the four.

"Hold tight!" screeched Parrish. He thrust his arm into his breast, and pulled out a little lever. Jim recognized it and remembered. It was the instrument of universal death--the uranium release of untold forces of cataclysmic depredation.

"Take that!" screamed the old man, inserting the lever into the secret groove in the Atom Smasher and jerking it in the direction of the priests.

CHAPTER XI

_Tode's Last Gamble_

A roar that seemed to rend the heavens followed. Roar upon roar, as the infinite momentum of the disintegrating uranium struck obstacle after obstacle. The Drilgoes vanished, the amphitheatre melted away, walls and roof.... Overhead were the moon and stars.

And proud Atlantis was sinking into the depths of the sea.... Not as a ship sinks, but piecemeal, her walls and towers crumbling and toppling as a child's sand-castle crumbles under the attack of the lapping waves. Down they crashed, carrying their freight of black, clinging, human ants, while from the sea's depths a wave, a mile high, rose and battered the fragments to destruction. From the crater of the volcano a huge wave of fire fanned forward, and where fire and water met a cloud of steam rose up.

A boiling chaos in which water and earth and fire were blended, spread over land and sea. And then suddenly it was ended. Where the last island of the Atlantean continent had been, only the ocean was to be seen, placid beneath the stars.