Qos Frenk himself was there to greet them. He picked out Dura, smiling with apparent kindness at her, and while the other coolies dispersed among the buildings, he offered to show Dura around his farm.

Frenk — dapper, round and sleek, his pink hair flowing over an elaborate cloak — Waved confidently beside her. “The work is straightforward enough, but it needs concentration and care… qualities, sadly, which not all coolies nowadays share. I’m sure you’ll do a fine job, my dear.”

Dura was wearing a coverall woven of some crude vegetable-fiber cloth, given to her as a parting gift by Ito. As she Waved it grated against her skin constantly, as if chafing her all over, and she longed to tear it off. On her back she carried a round pod of wood — an Air-tank, like the one she’d seen Toba wear, with a small mask she was supposed to fit over her face to help her breathe the rarefied Air of the upperMantle. The bulky, unnatural thing impeded her movement even more than the City-made clothes, but Frenk insisted she carry it. “Health ordinances, you see,” he had said with a philosophical shrug, his ornate cloak bunching around his thin shoulders.

Under the coverall, she still wore her length of rope and her small knife.

The farm had largely been cleared of tree trunks; the exposed forest root-ceiling was seeded with neat rows of green-gold wheat, of altered grass. Here, hovering just a few mansheights below the wafting, swollen tips of mutant grass, she could no longer see the boundaries of the farm. It was as if the Crust’s natural wildness had been banished, overrun by this claustrophobic orderliness.

Of course the orderliness covered only two dimensions. The third dimension led down to the clean, free Air of the Mantle which hung below her, huge and empty. The Parz folk had not yet succeeded in fencing off the Air itself… All she needed to do was to throw this Air-tank into the round, delicate face of Qos Frenk, and Wave away into infinity. These soft City-boms — even the coolies — could never catch her.

But she could never quit this place, abandon her obligations, until Adda’s fees were paid off. Ties of obligation and duty would imprison her here as surely as any cage.

Qos Frenk blinked, studying her. “I know this must be a strange situation for you. I want you to know you’ve nothing to fear but hard work. I own the ceiling-farm, and I own your labor, in that sense. But I don’t make the mistake of imagining I own your soul.

“I’m not a cruel man, Dura. I believe in treating my coolies as well as I can afford. And…”

“Why?” Dura found herself snarling. “Because you’re such a noble person?”

He smiled. “No. Because it’s economically more efficient for me to have a happy and healthy workforce.” He laughed, and he looked a little more human to Dura. “That should reassure you if nothing else does. I’m sure you’ll be fine here, Dura. Why, as soon as you learn the trade I don’t see why we shouldn’t be thinking of you as a future supervisor, or skills specialist.”

She forced herself to smile back. “All right. Thank you. I understand you’re doing your best for me. What will I have to do?”

He indicated the rows of ripening wheat dangling from the forest ceiling above them. “In a few weeks we’ll be ready for the harvest, and that’s when the real work begins. But for now your job is to ensure that the growth of the wheat is unimpeded. Look for the obvious, like boars crushing the stems. Or trespassers.” He looked saddened. “We get a lot of that nowadays… scavengers, I mean. A lot of poverty in the City, you see. Watch out for blight. Any kind of discoloration, or growth abnormalities… If we get any diseases we isolate the area and sterilize it fast, before the infection spreads.

“Look for wild grass, any plants growing among the roots, damaging the wheat. We don’t want anything else absorbing the lovely Crust isotopes which were meant for our crop… And that includes young trees. You’d be surprised how fast they grow.” He spread his hands wide. His enthusiasm was almost endearing, Dura thought. “You wouldn’t think it but this part of the Crust was all native forest, once.”

“Remarkable,” Dura cut in drily, remembering the broad, unspoiled forests of her home area in the far upflux.

Frenk looked at her uncertainly.

They met another worker, a woman who drifted with her head lost in the green-gold crop and her legs dangling down into the Air. The woman was hauling small saplings down from between the green stems of the wheat and shoving the weeds into a sack bound to her waist.

“Ah,” Frenk said with a smile. “One of my best workers. Rauc, meet Dura. Just arrived here. Perhaps you’d be good enough to show her around…”

The woman drifted slowly down from the dangling crop. Over her head, Rauc was wearing her Air-helmet, a veil of soft, semitransparent gauze which covered a broad-brimmed hat. The curtain bulged out a little, showing that it was being fed by Air from the woman’s tank.

Frenk Waved fussily away.

Rauc was slim and wore a simple smock of grubby leather, though her arms were bare. After Frenk’s departure she regarded Dura somberly for a few moments without speaking. Then she untied her veil and lifted it. Her face was thin and tired, her eyecups dark; she looked about Dura’s own age. “So you’re the upfluxer,” she said, her voice containing the flat whine of the City-born.

“Yes.”

“We heard you were coming. We were glad. Do you know why?”

Dura shrugged, uncaring.

“Because you upfluxers are strong… You’ll work hard, help us meet our quotas.” She sniffed. “As long as you don’t show us up, you’ll be popular enough.”

“I understand.” This woman was trying to warn her, she realized. “Thanks, Rauc.”

Rauc led her beneath the golden ceiling-fields back toward the cluster of structures at the heart of the farm, where Dura had been dropped on first arrival. There was no sign of Qos Frenk’s car; Dura imagined him returning to his cozy, stuffy home inside the City. Now, in mid-shift, the little huts seemed deserted: they were small, boxy buildings of wood, dangling by lengths of rope from the truncated stems of Crust-trees. There was a small, unkempt herd of pigs. Rauc said the herd was kept — not for commercial purposes — but to provide meat for the coolies, leather for smocks and hats. Rauc showed her small stores of clothing, Air-sacks and tools. There was a bakery, its inner walls blackened by heat; the coolies’ staple food, bread, was made for them here. A large, overweight man labored in the gloom of the bakery; he scowled at Dura and Rauc as they peered in at him. Rauc pulled a face. “Well, the bread’s fresh,” she said. “But that’s all you can say for it… The lowest-quality wheat ends up here, that and any gleanings we can find, while the best stuff is shipped off to Parz.”

There was a dormitory building, a small, cramped box packed with rows of cocoons. About half the cocoons were occupied. A woman’s sleepy face lifted to stare at them before flopping back into sleep, mouth open and hair dangling. Rauc pointed out a vacant cocoon Dura would be able to claim for herself. But Dura couldn’t imagine sleeping in here, breathing in the snores and farts of others, while the fresh Air of the Mantle swept away all around her. It made her realize, jarringly, that she was going to be as out of place here as in Parz itself. Most of the coolies were, after all, City-born — and mostly from the Downside where conditions were even more cramped than the average. So off-shift coolies shoveled themselves into this stinking box, listening to each other breathe and pretending that they weren’t stranded out here in the Mantle, but were tucked away inside the cozy confines of Parz.

Rauc smiled at her. “I think we’ll get along, Dura. You can tell me about your people. And I’ll show you how to get around here.”

“Frenk seems all right…”