top tightly into its socket of craolite, much heavier than the former one. Beneath this, three heavy craolite legs formed a sort of tripod.
"I looked forward to this possibility, Kay," said Cliff, as he adjusted the top and turned the clamps that held it in position. "Sorry I had to deceive you, but you we're so set on the cosmic rays, and I knew the psenium emanations wouldn't appeal to you. You wouldn't have believed. I had a hunch Ruth would draw one of those numbers… How long?"
The swaying masses of gray jelly were very near them. Cliff worked feverishly at the top.
"Let me help. Cliff!"
"No! I'm through! Stand back!" shouted Cliff.
Even then – he regretted it afterward, and knew that he would regret it to his dying day – even then the thought flashed through Kay's mind that Cliff wanted all the glory. Behind him the milling, screaming crowd was huddling, as if for protection. Slowly a wisp-like tentacle protruded from the advancing wall. Kay swung his ax and lopped it from the phantom body. But the wall was almost upon them, and from the other side it was advancing rapidly.
"I'm ready! Stand back!" Cliff turned upon Kay, his face white, his voice hoarse. "I've one request to make, Kay. Keep everybody back, including you and Ruth. Nobody is to come within twenty-five yards of this machine!"
"That shall be done," said Kay, a little bitterness in his tone.
"Ruth, I think I'm going to save you all." Cliff looked into the girl's face for a moment. "Please stand back twenty-five yards," he repeated.
Kay took Ruth by the arm and drew her back. The crowd moved back, their pressure moving back the vast multitudes behind them. The vast mob was almost packed into the quarter of the Golgotha; there was scarcely room to move.
Kay saw Cliff press the lever.
Slowly the giant top began to whirl. Faster … faster… Now it was revolving so fast that it had become totally invisible. But Cliff was almost surrounded by the wall of jelly. Only his back could be seen, and then space was narrowing fast.
Kay gripped Ruth's arm tightly. He held his breath. The crowd, of whom only a small part knew what was taking place, was screaming with terror as the mass of jelly on the other side pressed them inexorably backward. And Cliff had almost vanished. Would the machine work? Was it possible that the psenium emanations would succeed where the Millikan rays, the W-ray had failed?
Then of a sudden the air grew dark as night. Kay began to sneeze. He gasped for air. He was choking. He could see nothing, and he strained Ruth to him convulsively, while the terrified multitudes behind him set up a last wail of despair.
He could see nothing, and he stood with the ax ready for the onset of the monsters, more terrible now, in their invisibility, than before. Then of a sudden there sounded subterranean rumblings. The ground seemed to open almost under Kay's feet.
He leaped back, dragging Ruth with him. Slowly the dust was settling, the darkness lessening. A faint, luminous glow overhead revealed the sun. Kay was aware that Cliff had swung the top, so that the psenium rays were being brought to bear upon the second mass of the monsters on the other side.
The sun vanished in appalling blackness. Again the dust-choked air was almost unbreathable. The shrieks of the crowd died away in wheezing gasps; and then a wilder clamor began.
"The earthquake! The earthquake!" a girl was shrilling. "God help us all!"
Kay stood still, clutching Ruth tightly in his arms. He dared not stir, for all the world seemed to be dissolving into chaos.
Slowly the dust began to settle again. Perhaps five minutes passed before the sunbeams began to struggle through. A cloud of grey dust still obscured everything. But the wall of protoplasm was gone!
Cliff's voice came moaning out of the murk, calling Kay's name.
Kay moved forward cautiously, still holding Ruth. He seemed to be skirting the edge of a vast crater. At the edge of it he found the top, revolving slowly. And Cliff's voice came from beside the top.
"Kay, we've won. Don't look at me. Don't let Ruth see me! Look down!"
Kay looked down into the bottomless pit, extending clear across the plain to the distant jungle. An enormous canyon cloven in the earth, filled with the slowly settling cloud of dust.
"They're there, Kay. Don't look this way!"
But Kay looked – and could see nothing except a pile of debris, from the bottom of which Cliff's voice issued.
"Cliff, you're not hurt?"
"A – a little. You must listen while I tell you how to clean up the monsters. It's the psenium emanation. It has the same effect when our method is applied to it. It disintegrates everything inorganic – not organic.
"I thought, if I couldn't get them, I'd crumble the earth away – bury them. They're underneath the debris, Kay, a mile deep, buried, beneath the impalpable powder that represented the inorganic salts and minerals of the earth. They'll never get out of that. Protoplasm needs oxygen. They'll trouble us no more.
"You must take the top, Kay. Use our old method. You'll find its application to the psenium emanation written in a book fastened beneath the hood. Wipe out the rest of them. If any more come, you'll know how to deal with them."
"Cliff, you're not badly hurt?" Kay asked again.
"Don't look, I tell you! Keep Ruth away!"
But the dust was settling fast, and suddenly Ruth uttered a scream of fear.
And a strangled cry broke from Kay's throat as he looked down at what had been Cliff Hynes.
The man seemed to have become resolved into the same sort of protoplasm as the Earth Giants. He lay, a little heap, incredibly small, incredibly distorted. Flesh without bones, shapeless lumps of flesh where arms and legs and body frame should have been.
Cliff's voice came faintly. "You remember the leakage through the rubber and analektron container, Kay. The W-rays even fused the craolite socket. The psenium rays are stronger. They destroy even bone. They're fatal to the man who operates the machine, unless he follows the directions. I've written them out for you, but I had – no time – to apply them."
His voice broke off. Then, "Good luck to you and – Ruth, Kay," he whispered, absent inaudibly. "Don't let – her – look at me."
Kay led Ruth gently away. "Did you hear that?" she whispered, sobbing. "He died to save us Kay."
It was like a return from the grave for the amazed boys and girls who – since the onset of the monsters had destroyed the electric lines – poured out of the plain of Golgotha to life and freedom.
Many of them had gone mad, a few had died of fright, but the rest would come back to normal, and the world was saved.
Hunger was their greatest problem, for, despite Kay's hurried flight to the nearest occupied post, it was difficult to convince the Federation officials that the devils were really gone, buried beneath a mile of crumbled earth. And Kay had to be back to mop up other, smaller bands that had spread through the forests.
It was six months before the last of the monsters had been obliterated, and then Kay, now one of the highest officials in the Federation's service, was granted a lunarian's leave of absence pending his taking command of an Antarctic expedition for the purpose of destroying the remaining monsters in their lair.
He took this opportunity to be married to Ruth, in the church in his native town, which was en fête for the occasion.
"Thinking of Cliff?" Kay asked his bride, as she settled in his plane preparatory to their starting for the honeymoon in the Adirondacks. "I think he would be happy if he knew. He saved the world, dear; he gave his best. And that was all he wanted."
The Pirate Planet
BEGINNING A FOUR-PART NOVEL
By Charles W.