The Algebraist

“Yes,” he said. “Where do you think it might be?”

“I thought that Library One was his study,” Nuern said, selecting a helping of something glowing dull blue from the central carousel, and then spi

“Me too,” Livilido said. He looked at Fassin. “Why, was there another one? Has a bit dropped off the place?”

Fassin had taken a look round all the library spheres. Library One had always been Valseir’s formal study, where he received fellow scholars and other people, but it hadn’t been his real study, his den, his private space. Very few people were allowed in there. Fassin had felt flattered in the extreme to be invited to enter the nestlike nook that Valseir had made for himself inside the stretch of disused CloudTu

“I thought he had another study,” Fassin said. “Didn’t he keep a house in… what city was it? Guldrenk?”

“Ah! Of course,” Nuern said. “That would be it.”

· Colonel, these guys know nothing.

· I had been coming to the same conclusion.

Library Twenty-One (CincturiaCloudersMiscellania) had a conceit, a Dweller equivalent of a door made from a bookcase. Valseir had shown it to Fassin after the human had stayed with him for an extended period after their first meeting. It led, inward at first, towards the centre of the cluster of library spheres, through a short passage to a gap between two more of the outer spheres, then into the open gas. The joke — a hidden door, a secret passage — was that the various Cincturia were the outsiders of the galactic community, and the particular bookcase hiding the secret passage was categorised “Escapees’.

After their meal, Fassin gave the impression of shutting himself away in the library for some late-night shelf-sca

Then Fassin had to work out where the CloudTu

It was all dead reckoning. By the Dweller way of judging such things, the atmosphere was static and the Depths — not to mention the remainder of Ulubis system, the stars and indeed the rest of the universe — moved. With only notionally fixed reference points, finding anything in the Depths was notoriously difficult. After two hundred years the section of CloudTu

The likely volume — though identified with a worrying degree of fuzziness — was about five thousand kilcks away, though coming closer all the time, having been all the way round the planet many times. In a dozen hours it would be almost right underneath the house again. He calculated. It was doable. He pinged a note to the screen on the library’s door saying that he didn’t want to be disturbed.

Fassin let himself out through the hidden door about an hour after he’d entered the library. He let the little gascraft grow, pushing trim-spaces out to create internal vacuums and a larger, near-spherical outer shape so that he fell gently at first, causing as little turbulence as possible beneath the house. Then gradually he heavied, slowly shrinking the arrowhead to its dart-slim minimum, diving unpowered into the dark depths and through the rough boundary of the near-static cylinder of depleted gas that was all that remained of the ancient storm.

He powered up twenty klicks deeper and levelled out, then rose quickly when he was thirty lateral kilometres clear, zooming up through the gradually cooling, slowly thi

The little craft moved beneath the thin yellow sky, and the stars above seemed to slow down then go into reverse as Fassin flew faster than the combined speed of the planet revolving and the band beneath him jet-streaming in the same direction.

After less than an hour of flight, seeing nothing in the heavens above or in the skies beneath that would have led anyone to think there was life anywhere else in all the universe, he slowed and dropped, a shaftless arrowhead heading straight for the heart of the planet. He let the increasing density slow him further, feeling the resulting friction-heat leak through the gascraft’s hull and into his flesh.

Through the upper shear boundary — only hazily defined, kilometres thick, prone to vast slow waves and unpredictable swells and sudden troughs — he entered the shear zone itself, starting to circle through the crushing fluidity of jelly-thick atmosphere. If the section of CloudTu

There was always a chance that it had gone the other way, lifting towards the cloud tops, but that would be unusual. Disused CloudTu

He went on spiralling, keeping slow, sonosensing only gently so that there would be less chance of anybody who might be listening nearby overhearing him. (Could the colonel have followed him without him being aware of her? Probably. But why would she? Still, he had the feeling he ought to be as discreet as he could.) Light wasn’t much use. CloudTu