Renfry spoke at last. "I don't know how much fuel we have on board. I can't even tell you the nature of that fuel. And whether we
can
take off without more is also an open question. But if we can, I don't believe we'll be able to finish the trip. We may be working against time—but we'll have to discover if we can push those machines into one more job. And we'll have to do it quick!"
They swung out of the globe, and Renfry crawled under its arching side, to discover a new catastrophe. If there had been any fuel left in the ship's sealed storage compartments, it was gone now. There was an ominous damp patch spreading from an opening at ground level.
Renfry's voice came hollowly. "That's done it, fellas. She's empty. Unless you can get that pipe line on the job again, we're grounded for keeps."
"What made that open up?" Ross wondered with the bafflement of one to whom machines were still mysterious save for their most obvious functions.
"Might be some mechanism triggered by this." Ashe stamped on the pavement. "Well, let's go and look for the robot and that animated pipe line."
They walked toward the tower. From ground level the structure looked even more pointed and needle-like. There was an opening at the foot, the doorway from which the robot had come. Ashe reached that and stood for a moment peering in.
The chunky robot which had clanked into duty at their first visit was still there, just within the doorway. And beyond, plain to be seen in a rusty, yellowish light, were a corporal's guard of its fellows. All alike, they were backed against the far wall as if awaiting some long-past official inspection.
From a well in the center of the floor, to be glimpsed around the bulk of the robot in the doorway, was a massive piece of metal which Travis recognized as the "head" of the snake pipe line. Ashe reached out almost reluctantly to push the robot. To their surprise the machine, which had appeared so massive and immobile answered to that handling. It did not react the way a shaken alarm clock would. Instead it toppled forward, oddly flaccid. One of the arms clattered loose and spun across the pavement to strike the snake's head.
"It's moving! Look—it's moving!"
Ross was right. In a jerky, sullen manner the heavy end of the mobile pipe line raised, inched forward about a foot while the humans held their breaths in hope—until it fell supinely once more.
"Hit it again," advised Ross.
Ashe edged around the prostrate robot to inspect more closely what they could see of the pipe. This small portion displayed no signs of deterioration. He stooped, took a good grip on the "head" and tugged. Then he hurriedly jumped back while Ross and Travis kicked the robot out of the path of the creeping snake. Two feet—three—out in the open it went—and headed for the ship. Renfry saw them coming and waved, crawling back under the bulge of the globe to make ready for the pipe's arrival.
But they had exulted too soon. Some four feet away from the tower the head sank to earth once more. Ashe tried his former method of revival, without result. They took turns shaking it, together and separately. It was much heavier than the robot and they could not urge it into any further effort.
Renfry came to join in a consultation. He went back to inspect the well from which the pipe emerged, only to return as baffled as before.
"Can we pull it by hand?" Travis wanted to know.
"That's what we'll have to try now." Renfry was grim.
Bringing the light, tough rope from the ship, they fastened lines about the "head," and set to work. At Ashe's command they gave a concentrated jerk. The stubborn pipe gave, started forward, but not under its own power. They gained another four, five feet but the effort required to move that dead weight was exhausting. Now their gains were shorter, and the strain they must exert to produce them grew greater and greater.
Ross tripped, went down, levered himself up, his face set in a snarl. He seized the rope again as if it were a man he could tangle with—and jerked in concert with the other three. This time there was no yielding at all, and their feet slipped on the cracked and age-old stone.
Travis sat back on his heels in the immemorial position of the dismounted range rider. The others sprawled beside the tow rope, their faces beet red from their efforts. Renfry squirmed, braced himself on his hands and began to fumble with the latch of his helmet. He threw the bubble back and breathed hard with the immediacy of a drowning man.
"Put on your helmet, you fool!" Ashe raised his head from his arms; his voice in the com was broken by the laboring of his lungs.
But Renfry shook his head, his lips moving in words sealed away by the protection he no longer shared. Travis' fingers went to the fastenings of his own helmet.
"I don't think we need these." He pulled off the bubble and lifted his head to meet the touch of a small, playful breeze. The air was crisp, like that of a Terran autumn. And it filled his lungs in an invigorating way. He reached for the rope, ready to try again.
"There's no use in pulling ourselves blind." Ashe's voice was no longer rendered metallic by the alien com. "The trouble may lie back in the tower."
Renfry began to crawl on his hands and knees back the length of the pipe, inspecting its surface as he went. At last he staggered to his feet and lurched through the door, the others after him.
They found the technician down by the mouth of the well from which the pipe extended. He was examining the covering there, trying to wriggle the flexible tube back and forth.
"The thing must be caught—below this!" He hammered his fist against the capping.
"Can we get that lid off and see?" Ross wanted to know.
"We can try."
But such an operation required tools of a sort—levers, wedges . . . There was the line of waiting robots—could parts of their bodies be put to more practical purposes? Ross had picked up a loose "arm," shed by the one which had disintegrated, testing the rod's strength with all the force of his own arm and shoulder.
Travis studied the well capping. There was no opening, no vestige of crack into which a wedging tool might be inserted. And now Renfry ran his hands about the ring through which the pipe issued, striving to find by touch what none of them could see. He tapped with the rod, first lightly and then with increasing force, leaving some dents and scratches, but making no other impression on the fitting.
"Does that unscrew?" Ross suggested.
Renfry scowled, spat out a couple of short and forceful words. He transferred his efforts from the pipe to the outer rim of the cover. And there he did make a promising discovery. They worked fast, one at each, to pick the accumulated dust of centuries out of four depressions in which were sunk knobs which might just be the heads of bolts.
Then they turned to the broken robot, dismantled its remains, until they were equipped with pieces of metal to force those heads. It was slow, disheartening work. Once Travis went back to the ship to gather up the containers of the jelly which had poisoned him during the testing of the supplies. They smeared the stuff in and around the stubborn knobs, hoping it would lubricate and loosen, while they pounded and prodded. But their efforts were encouraged when the first bolt yielded, and Renfry used blistered fingers to work it free. And that small success gave a spurt to their labors.
It was nightfall and they were working mainly by touch when Ashe's bolt came free—the second one.
"This is it for now," he told them. "We can't rig any sort of light in here and there's no use in trying to free the rest in the dark. I've hit my fingers more than this blasted thing for the past half hour."
"Time may be running out on the journey tape," Ross answered tightly. He was putting into words one of the two fears which grinned over their shoulders during all those hours of punishing labor.
"Well, we aren't going to lift without fuel." With a sharp exclamation and a hand to his back, Ashe stood up. "And we can't work on in the dark without rest or food. Those things we know—the rest we're just guessing at."
So they stumbled back to the ship, realizing only when they stopped the battle with the stubborn casing how deeply tired they were. Travis knew that Ashe was right. They could not hope to lick the problem by driving their bodies past the point of human endurance.
They ate more than the proper rations for the meal, wavered to their bunks and collapsed, drunk with fatigue. And Travis was still stiff in the morning. No healing jelly had soothed him. He awakened to Ross's shaking and blinked foggily up at the other's thin face.
"Back to the salt mines, brother!" Ross put the blackened and torn nail of an abused finger to his mouth. "I could do with a blowtorch now. Climb out of your downy bed, but fast, and join the slave gang."
It was midmorning before they worked the fourth and last bolt out of its bed. And for a long moment after Renfry threw it from him with emphatic force, they just sat about the rim of the well, their torn and blistered hands hanging limply between their knees.
"All right." Ashe roused. "
Now
let's see if she'll come up!"
To get levers to raise the cover they had to dismantle two more of the robots. And they carried out that destruction with savage satisfaction. Somehow, attacking the unresisting semi-manlike forms gave them release from some of the frustration and fear. They got stout bars and went back to attack the well cover.
They never knew afterward how long it took them to pry that plug out of its bed. But a last frantic heave on the part of all, together, suddenly snapped it apart in two halves, displaying the dark hole from which the pipe arose.
Though it was day outside, as brilliantly clear a day as the one before had been, the interior of the tower was not too well lighted and they had no torch to explore those depths. Renfry lay down, to thrust both arms into the well, running his hands along the surface of the pipe as far as he could reach.
"Find anything?" Ashe crouched beside him, peering over one shoulder.
"No . . ." And then he changed that to an excited, "Yes!"
"I can barely touch it—feels as if the scaled coating on the pipe is caught." He wriggled and Travis caught hold of his legs to anchor him.
In the end Renfry did the rest of the tedious job painfully, with frequent halts for rest. He hung head down in that pit, kept from wedging his head and shoulders in too tightly by the others' hold on him. He had to work mainly by touch, since his own body blocked out three-quarters of the already subdued light, and with improvised tools hurriedly culled from the litter about them.
The fourth time they pulled him out for a breather, he rolled over on his back and lay gasping. "I've pried the thing loose as far down as I can reach." His words came one by one as if he could barely summon up the strength to push them out. "And it's still fast farther down."
"Maybe we can work it loose, pulling from up here." Ashe's hands curved about the scaled surface of the pipe where it projected over the side of the well.
"You can try." Renfry rubbed his fists across his forehead as Travis, with a heave he tried to make gentle, moved the technician's dead weight away from the side of the opening, to put his own hands overlapping Ashe's.
Together they strained to move the column of the pipe inside the tube of the well. But it appeared glued to the side where Renfry had fought to free it. Beads of sweat gathered along the line of black hair above Travis' forehead, trickled down to sting across his lips. And in the half-light he saw Ashe's jaw line set—sharp under the thin brown skin—while the cords and muscles of his arms and shoulders stood out to be modeled under the fabric of the blue suit.
Then Ross added his weight to the effort. "You pull," he told Ashe. "Let us push in your direction. If it is ever going to give, that ought to do it."
For a long, long moment it seemed that the pipe was not going to give, that too much damage existed below. Then Ashe flew back, the hose striking him hard in the chest as the obstruction below gave way and Ross and Travis sprawled halfway across the opening.
They scrambled up and Ross hurried to pull Ashe free of the hose. With Renfry trailing, they went back to the outer air of the port. They took up the towrope once again and began the labor of dragging the hose to meet the ship. The scaled pipe moved sluggishly, but they were winning, foot by painful foot.
Then Travis, during one of their all-too-frequent halts, glanced back and cried out. They were three-fourths of the way to their goal, but from under the belly of the hose snake was spreading a stain of moisture which gleamed in the afternoon light. That last rip to free the tube must have weakened its fabric and the unknown fuel was being lost.
Renfry stumbled back, knelt to explore, and jerked one hand away with a cry of pain. "It's corrosive—like acid," he warned. "Don't touch it."
"Now what?" Ross kicked dirt over the stain, watched the soil crumble into slime in the dark smear of fluid.
"We can get the pipe on to the ship—and hope that enough of the fuel comes through," Ashe answered in a colorless voice. "I don't think we can hope to mend the hose."
And because they could see no other way out, they went back to hauling at the towrope, trying not to glance back or think of the fuel seeping out of the pipe line. Renfry nursed his burnt hand against his chest until they at last pushed the end of the hose under the curve of the globe. He got down and crawled under, grunting with pain as he fastened the head of the snake against the opening in the ship.
"Is it feeding through?" Ross asked the all-important question.
Renfry, almost as if he dreaded the answer, put his good hand palm-down on the scaled side of the pipe, holding it there for a long moment while they waited to know the future.
"Yes."
They had no idea how much fuel the ship required—or whether the necessary amount was still available. The moist seepage along the hose continued to spread. But Renfry lay with his hand on the pipe, nodding to them from time to time that the feed of fluid was still in progress.
There came a pop like a small explosion. The head of the pipe dropped from the opening in the ship, the hose now flaccid. Renfry tapped and hammered at the cap which had slid into place, pulling down over it a second protective lock. When that clicked under his efforts he rolled out.