against the wreck.
It seemed that the weird attackers could not be harmed. For those who were hit simply melted to jelly and flowed away.
The generators in the wreck began humming loudly. Then Linn Kyle and his two men emerged dragging a heavy cable. At the end of this they had hastily attached one of the pressure-ray jet projectors that ordinarily propelled the ship.
'Use it, quickly!' shouted Durk Undis. 'The brutes are too much for us!'
'Stand clear!' yelled Linn Kyle.
He switched on the heavy ray-projector he held. Blinding beams of force leaped from it and cut through the rubbery horde. The ground instantly became a horrible stream of creeping, flowing jelly.
The monstrous attackers sullenly retreated. And the viscous slime upon the ground retreated also toward the shelter of the jungle.
There came then a raging chorus of unhuman, throaty shouts from out in the ocher forest.
'Quick, rig other jet-projectors!' Durk Ungis ordered. 'It's all that will keep them off. We need one on each side of the wreck.'
'What in the name of all devils
'There's no time for speculating on that!' rapped the other. 'Get those projectors ready.'
Gordon and Lianna witnessed another attack, a half-hour later. But this time, four jets of pressure-rays met the rubbery horde. Then the attacks desisted.
'They've gone!' sweated a Cloud-man. 'But they carried off two of us!'
As the generators were turned off, Gordon heard a new sound from the distance.
'Lianna, hear that?'
It was a pulsing, throbbing sound like the deep beat of distant drums. It came from far westward in the nebula-lit jungle.
Then, breaking into the throbbing drumbeat, there came a faint, agonized series of human screams. There swelled up a triumphant chorus of throaty shouts, then silence.
'The two Cloud-men who were captured,' Gordon said sickly. 'God knows what happened to them out there.'
Lianna was pale. 'Zarth, this is a world of horror. No wonder the Empire has left it uncolonized.'
The menace to themselves seemed doubled, to Gordon. Almost, to assure Lianna's safety from the nightmare terrors of this planet, he would have gone willingly back to the Cloud.
But his determination returned. They'd get away, but not to go back to the hands of Shorr Kan if he could help it!
He forced himself to continue the slow, squirming movements that rubbed his plastic fetter against the rough crack in the chair-frame. Finally in weariness he slept, to awaken hours after dawn.
In the coppery sunlight, the ocher jungles were deceptively peaceful looking. But captives and captors alike knew now what weird horror brooded out in those golden glades.
Gordon, through the long day, continued to squirm and hitch to increase the abrasion on the fetter. He desisted only when the eyes of their guard were upon him.
Lianna whispered hopefully, 'Do you think you can get free?'
'By tonight I should be able to wear it through,' he murmured.
'But then? What good will it do? We can't flee out there into the jungle!'
'No, but we can call help,' Gordon muttered. 'I've thought of a way.'
Night came, and Durk Undis gave his men sharp orders. 'Two men on each of those jet-projectors, ready to repel the creatures if they come! We'll keep the generators running continuously.'
That was welcome news, to Gordon. It made more possible the precarious scheme he had evolved.
He felt that by now the tough plastic must be abraded halfway through. But it still felt too strong to break.
The generators had begun humming. And the worried Cloud-men had not long to wait for the attack they dreaded. Once more from the nebula-illumined jungles came the weird, throaty shouts.
'Be ready the minute they appear!' called Durk Undis.
With a chorus of throaty cries, the rubbery horde rolled in a fierce wave out of the jungle. Instantly the jet projectors released beams of the powerful pressure-rays upon them.
'It's holding them back! Keep it up!' Durk Undis cried.
'But they don't
Gordon realized this was his opportunity. The Cloud-men were all engaged out there in defending the wreck, and the generators were running.
He expanded his muscles in an effort to break his fetter. But he had misjudged its strength. The tough plastic held.
Again he tried, straining wildly. This time the fetter snapped. Hastily, he unfastened the other fetters.
He got to his feet and quickly freed Lianna. Then he hurried across the corridor toward the stereo-room just opposite.
'Watch and warn me if any of the Cloud-men come back in here!' he told the girl. 'I'm going to try to start the transmitter.'
'But do you know enough about it to send out a call?' asked Lianna.
'No, but if I can start it up,
He fumbled in the dimness of the room for the switches he had observed the operator use to start the transmitter.
Gordon closed them. The transmitter remained dead. There was no whine of power, no glow of big tubes. A baffled feeling grew in him as he realized the failure of his plan.
19: World of Horror
Gordon forced himself to remain calm despite the wild din of struggle outside the wreck. He went over the switches he had seen the operator use to start the transmitter.
He had missed one! As he closed it, the motor-generators in the stereo-room broke into loud life, and the big vacuum tubes began glowing.
'The generators must be failing! Our jets are losing power!' came a cry from one of the Cloud-men outside the wreck.
'Zarth, you're drawing so much power from the two generators that it's cutting their ray-jets!' warned Lianna. 'They'll be in here to find out what's wrong!'
'I only need a moment!' Gordon sweated, bending tensely over the bank of vernier dials.
It was impossible, he knew, for him to try sending any coherent message. He knew almost nothing about this complicated apparatus of future science.
But if he could send out any kind of untuned signal, the very fact of such a signal coming from a supposedly uninhabited planet would surely arouse the suspicion of the Empire cruisers searching out there.
Gordon spun the verniers at random. The equipment sputtered, hummed and faltered, beneath his ignorant handling.
'The brutes are getting through!' Durk Undis' voice yelled, 'Linn, get in there and see what's wrong with the generators!'
The battle outside was closer, fiercer. Lianna uttered a cry of warning.
Gordon whirled around. Linn Kyle stood, wild and disheveled, in the door of the stereo-room.
The Cloud-man uttered an oath and grabbed out his atom-pistol. 'By God, I might have known-'
Gordon dived for him, tackled him and brought him to the floor with a crash. They struggled furiously.
Through the increasing din, Gordon heard Lianna's horror-laden scream. And he glimpsed weird figures
