"Ah," said Barch.

"Be careful. If he knows what you plan, he becomes a demon, a giant. No one in the room could hold him."

Barch stood up, went to Kerbol, spoke briefly, passed on to Flatface, then to Moranko.

Barch went to the table, moved the locator to the side of the room. Tick weighed no more than a hundred thirty pounds. He looked stringy and agile.

Kerbol and Flatface came up behind. Each seized an arm; Moranko grasped the spidery legs.

Tick looked up in sudden wonder. Barch stepped forward, pulled up the front of his yellow blouse.

Tick's eyes popped forward until more was out than in. He writhed his shoulders; Kerbol and Flatface were dragged half across the table. He tensed his legs; incredibly Moranko was jerked a foot from the floor.

There on the sweating writhing skin was a flat brown spot. Barch pulled it free with his fingernails. Two objects dropped to the stone floor of the cave: a metal locket and the leech which humped sluggishly toward the fire. Tick leaned down at the locket, his eyes protruded as if on stalks. He drew his arms forward; Flatface and Kerbol, panting and gasping, came across the table like pillows. Barch picked up the locket, snapped it open, drew out a wisp of membrane.

"Tick," said Barch, "sit still."

Tick's eyes receded into his head. Kerbol and Flatface gained their feet.

"Tick," said Barch, "will you behave?"

Tick sighed. "My life is no longer my own."

"Not one of us here owns his life. We're in this together; we'll leave Magarak together or we'll die together. Do you understand that?"

Tick made no answer. His eyes sought out Chevrr's, as if seeking sympathy.

Barch said, "Where I go, your charm goes. When we get free of Magarak, you'll have it back."

Tick said nothing.

Barch returned the locator to the table, looked in at the pulsing pastel landscape. "What are those transparent white squares?"

"I don't know," said Tick.

"What are the black lines?"

"Those are the underground belts."

"I see a bright orange spot with things like fish bones waving on top. How would I find out what place that is?"

Tick looked. "That's on the Ptrsfur Peninsula, Zcham District."

"How do you know?"

"The signs are on the strip at the top."

"And the orange block?"

Tick twisted a knob. A black dot moved across the panorama, centered on the orange block. Tick pointed to a line of glowing orange symbols on the cylinder at the side. "There you will read the function of the block."

Barch scrutinized the symbols. "Can you read them?"

"No."

Barch glanced around the room. "Ellen, can you read this?"

Indifferently she came to look. "The manufacture of padisks verktt."

"And what is that?"

" 'Padisks' is number nine in series ten-or eleven-of the artificial elements. Verktt are a kind of radiation valves."

Barch grunted. "Oh." He tentatively turned the dial again. "This thing should be a big help to us." He looked around. No one appeared to be excited. "It's a great piece of luck."

Flatface pressed his agate eyes against -the slit, twisted the dial. "Ah-there is the Purpurat, where I wound bobbins for five years."

Barch turned to Komeitk Lelianr. "Tick told me about a Magarak coordinator-a calculating machine of some kind."

"Yes," said Komeitk Lelianr. "A manufacturing world is coordinated by what is called a 'brain'-a scheduling machine, which keeps the elements of the world running efficiently."

She twisted the locator dial, reading the characters. Barch watched a moment. "Ellen, it looks like you've got yourself a job."

She nodded in agreement. Barch glanced around the table. Eyes were on him; eyes black, blue, white, red, slate-green. He said hesitantly to the hall at large, "We might as well talk this project over."

He waited, there was no reply. They were, perhaps, not accustomed to talking things over.

"We've got the barge," said Barch. "My idea was to fit on some kind of air-tight balloon, net it over with cable."

There was silence. Barch looked around the table. Moses, the dwarf, threw wood on the fire. Barch said edgily, "I don't see why it wouldn't work, but I'm no spaceship engineer. Maybe somebody has a better idea."

Komeitk Lelianr said off-handedly, "Far simpler to obtain another barge, and weld the two of them face to face."

Barch sat perfectly still a moment, to make sure of himself. "That sounds like a very good idea." He paused. "There's a point to consider. In space we'll depend on the lift units for propulsion, so that we can keep to our feet. I hope for at least one gravity constant acceleration, which will bring us to light-speed-or as close as possible-in somewhere near a year. After that-I don't know. Earth scientists are convinced that light-speed is the ultimate."

Komeitk Lelianr smiled faintly. "Earth scientists have little practical experience in space-travel."

Barch continued as if he had not heard. "The point I was trying to make was, if we carry the extra mass of a second barge, can we reach that acceleration?"

"Certainly. More easily than with only one barge. You will have available the lift of both barges; they work on a positive-negative principle, like electric magnets."

Barch, a little at a loss, said, "Oh. I didn't know."

Pedratz the taffy-colored one, said, Two coils of welding tape, two hours, and two barges are one!"

Barch rose to his feet, walked outside to check on the Calbyssinians. Arn, standing alone by the doorway, gave him an aggrieved glance. Barch bent to look at the wrist watch. "Your time's about up. I'll send out your relief."

He returned within, gave the Griffits instruction, went out with them, explained the wrist watch, then came back to the table, with the feeling of returning into a chess match. He said, "Before we weld the barges together, it might be a good idea to deck over the first barge, with the effect of doubling our floor space. Also, we'd better install whatever machinery we need-the air conditioners, water condensers, the-"

Komeitk Lelianr said, "Lekthwans use a single unit, a sustenator. Carbon dioxide and water vapor are extracted from the air; water, oxygen are produced, as well as basic food-stuff. The Klau presumably employ something similar."

Barch wondered if she might be deliberately flaunting her superior knowledge. Probably not, he decided wearily; it wouldn't occur to her as desirable. He looked for Tick. "Hey, Tick-where do the Klau build spaceship sustenators?"

Tick came over the locator, twisted the nob. "That's the growing plant for the shell down there-the black and green. The final assembly is at Stalkoa-Skel, Magdkoa District, on the fourth tier. I once picked up a cargo for the space-works on Gdoa." He twisted the dial. "There, the red block."

It would be easier, thought Barch, if I weren't so darned nervous. He studied the rock-colored hulk to his right. Kerbol had no more nerves than a lizard. Ahead was the thin crouched back of Tick, piloting the raft, completely at ease, making a chirping cricket sound with his lips.

Barch looked back over the side. They flew low; under and among a stream of barges, rafts, spheres and occasional flashing snapping objects like sheets of silver lightning. Overhead rose the massive, sooty towers of Magarak, crowding the sky, crowding the imagination. Even higher, feathery trusses flickered back and forth; smoke boiled and drifted. Colored flares fumed and dazzled; the air rolled with sound: clanging, chugging, roaring, hissing.

Tick flew confidently, almost happily, as if he were in a favorite stamping-ground. Barch shook his head in wonder, giving grudging respect to a brain which so casually encompassed and accepted this appalling bedlam.

The raft halted. Tick gestured with a hand like a monkey-paw. "That's it." They hung over what appeared to be a funnel of concentric terraces, vast as a crater, shining with leaden rings of light. A great black building, diamond-shaped, hung precariously over the gap, the sharp corner reaching to the center. Pillars of green light, like thick neon-tubes, rose from each of the steps into the building.