"They saw our tracks near the Tube," snapped Tommy bitterly. "Oh, what a fool I am! Now they'll ring us in."

He seized Evelyn's hand and began to run. There was a little rise in the ground a hundred yards away, with a clump of leafy ferns to shade it. They reached it as other half-naked, wholly mad human forms burst out of the jungle to yell and caper and make derisive and horrible gestures at the fugitives.

"Here we fight," said Tommy grimly. "The ground's open, anyhow. We fight here, and very probably we die here. But first...."

He knelt down and drew the finest of fine beads upon a bearded man who carried a glittering truncheonlike club which, by the way it was carried, was more than merely a bludgeon. He pulled the trigger for a single shot.

The bullet struck the capering Ragged Man fairly in the chest. And it exploded.

CHAPTER V

_The Fight in the Marsh_

Twice, within the next two hours, the Ragged Men mustered the courage to charge. They came racing across the semi-solid ooze like the madmen they were. Their yells and shouts were maniacal howls of blood-l.u.s.t or worse. And twice Tommy broke their rush with a savage ruthlessness.

The sub-machine-gun's first magazine was nearly empty. It was an unhandy weapon for single-shot work but it was loaded with explosive sh.e.l.ls. The second rush he stopped with an automatic pistol. There were half-naked bodies partly buried in the ooze all the way from the jungle's edge to within ten yards of the hillock on which he and Evelyn had taken refuge.

It was hot there, terribly hot. The air was stifling. It fairly reeked of moisture and the smells from the swamp behind them were sickening.

Tommy began to transfer the sh.e.l.ls from the spare bent magazine to the one he had carried with the gun.

"We've a couple of reasons to be thankful," he observed. "One is that there's a bit of shade overhead. The other is that we had the big magazines for this gun. We still have nearly ninety sh.e.l.ls, besides the ones for the pistols."

Evelyn said soberly:

"We're going to be killed, don't you think, Tommy?"

Tommy frowned.

"I'm rather afraid we are," he said irritably. "Confound it, and I'd thought of such excellent arguments to use in the City back yonder!

Smithers said the Death Mist was two miles across, to-day, and still growing. The people in the city are still pouring the stuff down through Jacaro's Tube."

Evelyn smiled faintly. She touched his hand.

"Trying to keep me from worrying? Tommy...." She hesitated until he growled a question. "Please--remember that when Daddy and I were in the jungle before, we saw what these Ragged Men do to prisoners they take. I just want you to promise that--well, you won't wait too long, in hopes of somehow saving me."

Tommy stared at her. Then he decisively reached forward and put his hand over her mouth.

"Keep quiet," he said gently. "They shan't capture you. I promise that. Now keep quiet."

There was only silence for a long time. Now and again a hidden figure screamed in rage at them. Now and again some flapping thing sped toward the jungle's edge. Once a naked arm thrust one of the golden truncheons from behind its cover, pointing at a flying thing a few yards overhead. The flying thing suddenly toppled, turning over and over before it crashed to the ground. There were howls of glee.

"They seem mad," said Tommy meditatively, "and they act like lunatics, but I've got a hunch of some sort about them. But what?"

Sunlight gleamed on something golden beyond the jungle's edge. Naked figures went running to the spot. An exultant tumult arose.

"Now they try another trick," Tommy observed dispa.s.sionately. "I remember that at the Tube they had pushed something on wheels...."

The sub-machine gun was unhandy for accurate single shots, and no pistol can be used to effect at long ranges. To conserve ammunition, Tommy had been shooting only at relatively close targets, allowing the Ragged Men immunity at over two hundred yards. But now he flung over the continuous-fire stud. He watched grimly.

The foliage at the edge of the jungle parted. A crude wagon appeared.

Its axles were lesser tree-trunks. Its wheels were clumsy and crude beyond belief. But mounted upon it there was a queer ma.s.s of golden metal which looked strangely beautiful and strangely deadly.

"That's the thing," said Tommy dispa.s.sionately, "which made the flare of light last night. It blew up the Tube. And Von Holtz told me--hm--his friends, in the City...."

He sighted carefully. The wagon and its contents were surrounded by a leaping, capering mob. They shook their fists in an insane hatred.

A storm of bullets burst upon them. Tommy was traversing the little gun with the trigger pressed down. His lips were set tightly. And suddenly it seemed as if the solid earth burst asunder! There had been an instant in which the bullet-bursts were visible. They tore and shattered the howling mob of Ragged Men. But then they struck the golden weapon. A sheet of blue-white flame leaped skyward and round about. A blast of blistering, horrible heat smote upon the beleaguered pair. The moisture of the ooze between them and the jungle flashed into steam. A section of the jungle itself, a hundred yards across, shriveled and died.

Steam shot upward in a monstrous cloud--miles high, it seemed. Then, almost instantly, there was nothing left of the Ragged Men about the golden weapon, or of the weapon itself, but an unbearable blue-white light which poured away and trickled here and there and seemed to grow in volume as it flamed.

From the rest of the jungle a howl arose. It was a howl of such loss, and of such unspeakable rage, that the hair at the back of Tommy's neck lifted, as a dog's hackles lift at sight of an enemy.

"Keep your head down, Evelyn," said Tommy composedly. "I have an idea that the burning stuff gives off a lot of ultra-violet. Von Holtz was badly burned, you remember."

Naked figures flashed forward from the jungle beyond the burned area.

Tommy shot them down grimly. He discarded the sub-machine gun with its explosive sh.e.l.ls for the automatics. Some of his targets were only wounded. Those wounded men dragged themselves forward, screaming their rage. Tommy felt sickened, as if he were shooting down madmen. A voice roared a rage-thickened order from the jungle. The a.s.sault slackened.

Five minutes later it began again, and this time the attackers waded out into the softer ooze and flung themselves down, and then began a half-swimming, half-crawling progress behind bits of tree-fern stump, or merely pushing walls of the jellylike mud before them. The white light expanded and grew huge--but it dulled as it expanded, and presently seemed no hotter than molten steel, and later still it was no more than a dull-red heat, and later yet....

Tommy shot savagely. Some of the Ragged Men died. More did not.

"I'm afraid," he said coolly, "they're going to get us. It seems rather purposeless, but I'm afraid they're going to win."

Evelyn thrust a shaking hand skyward. "There, Tommy!"

A strange, angular flying thing was moving steadily across the marsh, barely above the steamlike haze that hung in thinning layers about its foulness. The flying thing moved with a machinelike steadiness, and the sun twinkled upon something bright and shining before it.

"A flying machine," said Tommy shortly. His mind leaped ahead and his lips parted in a mirthless smile. "Get your gas mask ready, Evelyn.

The explosion of that thermit-thrower made them curious in the City.

They sent a ship to see."

The flying thing grew closer, grew distinct. A wail arose from the Ragged Men. Some of them leaped to their feet and fled. A man came out into the open and shook his fists at the angular thing in the air. He screamed at it, and such ghastly hatred was in the sound that Evelyn shuddered.

Tommy could see it plainly, now. Its single wing was thick and queerly unlike the air-foils of Earth. A framework hung below it, but it had no balancing tail. And there was a glittering something before it that obviously was its propelling mechanism, but as obviously was not a screw propeller. It swept overhead, with a man in it looking downward.

Tommy watched coolly. It was past him, sweeping toward the jungle. It swung sharply to the right, banking steeply. Smoking things dropped from it, which expanded into columns of swiftly-descending vapor. They reached the jungle and blotted it out. The flying machine swung again and swept back to the left. More smoking things dropped. Ragged Men erupted from the jungle's edge in screaming groups, only to writhe and fall and lie still. But a group of five of them sped toward Tommy, shrieking their rage upon him as the cause of disaster. Tommy held his fire, looking upward. A hundred yards, fifty yards, twenty-five....

The flying machine soared in easy, effortless circles. The man in it was watching, making no effort to interfere.