Circling slowly, keeping always on the level of the planet's equator, and near the edge of the violet ray, so as to be as close as possible to his landing place when he reached the proper size, he watched the creeping black needle.

Too, he scanned with eager eyes the planet floating before him. Bare, red deserts; narrow strips of green vegetation; shrunken, blue oceans; silvery lines of rivers, pa.s.sed in fascinating panorama beneath his eyes. The rate of the planet's spinning seemed continually to lessen, with the changing of his own sense of time.

Agnes! Larry thought of her with a curious, eager pain in his heart.

She was somewhere on that strange, ancient world, a prisoner of weird machine-monsters! Intended victim of a grotesque sacrificial ceremony!

Could he find her, in the vastness of an unfamiliar world? And having found her, would there be a chance to rescue her from her hideous captors? The project seemed insane. But Larry felt a queer, unfamiliar urge, which, he knew, would drive him on until he had discovered and saved her--or until he was dead.

At last, when it seemed to Larry nearly three hours since he had begun this amazing flight, the crawling ebon needle reached the mark, "Pygmy Planet Normal."

He flew out of the wall of violet flame toward the planet's surface.

Before, the distance between the planet and the ray's edge had seemed only the fraction of an inch. Now it appeared to be many miles.

Abruptly the Pygmy Planet, which had seemed to be _beside_ him, appeared to swing about, so that it was _beneath_ him. He knew that it was a change merely in his sensations. He was feeling the gravitation of the new world. It was pulling him toward it!

He cut the throttle, and settled the plane into a long glide, a glide that was to end upon the surface of a new planet!

In what seemed half an hour more, Larry had made a safe landing upon the Pygmy Planet. He had come down upon a stretch of fairly smooth, red, sandy desert, which seemed to stretch illimitably toward the rising sun, which direction Larry instinctively termed "east."

To the "west" was a line of dull green--evidently the vegetation along a stream. The ocher desert was scattered with spa.r.s.e clumps of reddish, spiky scrub. Larry taxied the plane into one of those thickets. Finding canvas and rope in the cabin, he staked down the machine, and m.u.f.fled the motor.

Then, selecting a rifle and a heavy automatic from the weapons in the cabin, and filling his pockets with extra ammunition, he left the plane and set out with brisk steps toward the green line of vegetation.

"I'll follow along the river," he reasoned. "It may lead me somewhere and it will show the way back to the plane. I may come across something in the way of a clue. Can't go exploring by air, or I'll burn up all the gas and be stranded here!"

To his surprise, the water course proved to be an ancient ca.n.a.l, walled with crumbling masonry. Its channel was choked with mud and th.o.r.n.y, thick-leaved desert shrubs of unfamiliar variety; but a feeble current still flowed along it.

After some reflection, Larry set out along the banks of the ca.n.a.l.

He followed it for two days.

Curious straight bars of light were visible across the sky--a band of violet in the morning; one of crimson at evening. Their apparent motion was in the same direction as that of the sun. The bars of light puzzled him considerably before it occurred to him that they must be the red and violet rays.

"So you wait till evening, and then fly up into the red ray, to go home," he muttered. "But I may not need that information," he added grimly. "Seems to be a pretty big job to search a planet on foot, for one person. And I'm not going back without Agnes!"

In the afternoon of the second day, he came within view of a city. He could discern vast, imposing walls and towers of dark stone. It stood in the barren red desert, far back from the green line of the old ca.n.a.l. Larry left the ca.n.a.l and started wearily across toward it. He had covered several miles of the distance before he saw that the lofty towers were falling, the magnificent walls crumbling. The city was ruined, dead, deserted!

The realization brought him a great flood of despair. He had hoped to find people--friends, from whom he might get food, and information about this unfamiliar planet. But the city was dead.

Larry was standing there, in the midst of the vast red plain between ruined city and ruined ca.n.a.l. Tired, hungry, lonely and hopeless. He was looking up at the white "sun," trying to comfort himself with the thought that the brilliant luminary was merely a queer blue lamp, that he was upon a tiny experimental world in a laboratory. But the thought brought him no relief; only confusion and a sense of incredulity.

Then he saw the machine-monster.

A glittering, winged thing of crystal and green metal, identical with the one he had encountered in the laboratory. It must already have seen him, for it was dropping swiftly toward him.

Larry started to run, took a few staggering steps. Then he recalled the heavy rifle slung over his shoulder. Moving with desperate haste, he got it into his hands and raised it just as the monster dropped to the red sand a dozen yards away from him.

Steadily he covered the crystal cylinder within which the thing's brain floated in luminous violet liquid. His finger tightened on the trigger, ready to send a heavy bullet crashing into it. Then he paused, swore softly, lowered the gun.

"If I kill it," he murmured, "I may never find Agnes. And if I let it carry me off, it may take me where she is."

He walked toward the monster, across the red sand.

It stood uncertainly upon green metal legs, seeming to stare at him strangely with eye-like lenses. Its wings of thin green metal plates, were folded; its four green tentacles were twitching oddly.

Abruptly, it sprang upon him.

A green tentacle seized the rifle and s.n.a.t.c.hed it from his hands. He felt the automatic pistol and the ammunition being removed from his pockets.

Then, firmly held in the flexible arms of green metal, he was lifted against the cylinder of violet liquid. The monster spread its broad emerald wings, and Larry was swiftly borne into the air.

In a few moments the wide ruins of the ancient city were spread below, with the green line of the choked ca.n.a.l cutting the infinite red waste of the desert beyond it.

The monster flew westward.

For a considerable time, nothing save barren, ocherous desert was in view. Then Larry's weird captor flew near a strange city. A city of green metal. The buildings were most fantastic--pyramids of green, crowned with enormous, glistening spheres of emerald metal. An impa.s.sable wall surrounding the city.

Larry had expected the monster to drop into the city. But it carried him on, and finally settled to the ground several miles beyond. The green tentacles released him, as the thing landed, and he sprawled beside it, dizzy after his strange flight.

As Larry staggered uncertainly to his feet, he saw that the monster had released him in an open pen. It was a square area, nearly fifty yards on each side, and fenced with thin posts or rods of green metal, perhaps twenty feet high. Set very close together, and sharply pointed at the top, they formed a barrier apparently insurmountable.

In the center of the pen was a huge and strange machine, built of green metal. It looked very worn and ancient; it was covered with patches of bluish rust or corrosion. At first it looked quite strange to Larry; then he was struck by a vaguely familiar quality about it.

Looking closer, he realized that it was a colossal steam hammer!

Its design, of course, was unfamiliar. But in the vast, corroded frame he quickly picked out a steam chest, cylinder, and the great hammer, weighing many tons.

He gasped when his eyes went to the anvil.

A man was chained across it.

A man in torn, grimy clothing, fastened with fetters of green metal upon wrists and ankles, so that his body was stretched beneath the ma.s.sive hammer. He seemed to be unconscious; upon his head, which was turned toward Larry, was a red and swollen bruise.

The monster which had dropped Larry within the pen rose again into the air. And Larry started forward, trying to remember just what Agnes had told him of a machine to which the monsters sacrificed.

This must be the machine--this ancient steam hammer!

As he moved forward, Agnes came into view.