The tone in her voice was so heavy, so resigned, that Robert decided she had to be exaggerating for effect. The theatrical touch made her seem oddly more like a human teenager, and that in itself was a bit unnerving. He led her toward the cluster of vines. “It’s over here, where they converge down at the forest floor.”

Athaclena’s ruff — the helm of brown fur that began in a narrow stroke of down on her spine and rose up the back of her neck to end, caplike, in a widow’s peak above the bridge of her strong nose — was now puffed and riffled at the edges. Over her smooth, softly rounded ears the cilia of her Tymbrimi corona waved as if she were trying to pick out any trace of consciousness other than theirs in the narrow glade.

Robert reminded himself not to overrate Tymbrimi mental powers as humans so often did. The slender Galactics did have impressive abilities in detecting strong emotions and were supposed to have a talent for Grafting a form of art out of empathy itself. Nevertheless, true telepathy was no more common among Tymbrimi than among Earthlings.

Robert had to wonder what she was thinking. Could she know how, since they had left Port Helenia together, his fascination with her had grown? He hoped not. The feeling was one he wasn’t sure he even wanted to admit to himself yet.

The vines were thick, fibrous strands with knotty protrusions every half-meter or so. They converged from many different directions upon this shallow forest clearing. Robert shoved a cluster of the multicolored cables aside to show Athaclena that all of them terminated in a single small pool of umber-colored water.

He explained. “These ponds are found all over this continent, each connected to the others by this vast network of vines. They play a vital role in the rain forest ecosystem. No other shrubs grow near these catchments where the vines do their work.”

Athaclena knelt to get a better view. Her corona still waved and she seemed interested.

“Why is the pool colored so? Is there an impurity in the water?”

“Yes, that’s right. If we had an analysis kit I could take you from pond to pond and demonstrate that each little puddle has a slight overabundance of a different trace element or chemical. “The vines seem to form a network among the giant trees, carrying nutrients abundant in one area to other places where they’re lacking.”

“A trade compact!” Athaclena’s ruff expanded in one of the few purely Tymbrimi expressions Robert was certain he understood. For the first time since they had left the” city together he saw her clearly excited by something.

He wondered if she was at that moment Grafting an “empathy-glyph,” that weird art form that some humans swore they could sense, and even learn to understand a little. Robert knew the feathery tendrils of the Tymbrimi corona were involved in the process, somehow. Once, while accompanying his mother to a diplomatic reception, he’d noticed something that had to have been a glyph — floating, it seemed, above the ruff of the Tymbrimi Ambassador, Uthacalthing.

It had been a strange, fleeting sensation — as if he had caught something which could only be looked at with the blind spot of his eye, which fled out of view whenever he tried to focus on it. Then, as quickly as he had become aware of it, the glimpse vanished. In the end, he was left unsure it had been anything but his imagination after all.

“The relationship is symbiotic, of course,” Athaclena pronounced. Robert blinked. She was talking about the vines, of course.

“Uh, right again. The vines take nourishment from the great trees, and in exchange they transport nutrients the trees’ roots can’t dvaw out of the poor soil. They also flush out toxins and dispose of them at great distances. Pools like this one serve as banks where the vines come together to stockpile and trade important chemicals.”

“Incredible.” Athaclena examined the rootlets. “It mimics the self-interest trade patterns of sentient beings. And I suppose it is logical that plants would evolve this technique sometime, somewhere. I believe the Kanten might have begun in such a way, before the Linten gardeners uplifted them and made them starfarers.”

She looked up at Robert. “Is this phenomenon catalogued? The Z’Tang were supposed to have surveyed Garth for the Institutes before the planet was passed over to you humans. I’m surprised I never heard of this.”

Robert allowed himself a trace of a smile. “Sure, the ZTang report to the Great Library mentions the vines’ chemical transfer properties. Part of the tragedy of Garth was that the network seemed on the verge of total collapse before Earth was granted a leasehold here. And if that actually happens half this continent will turn into desert.

“Rut the Z’Tang missed something crucial. They never seem to have noticed that the vines move about the forest, very slowly, seeking new minerals for their host trees. The forest, as an active trading community, adapts. It changes. There’s actual hope that, with the right helpful nudge here and there, the network might become a centerpiece in the recovery of the planet’s ecosphere. If so, we may be able to make a tidy profit selling the technique to certain parties elsewhere.”

He had expected her to be pleased, but when Athaclena let the rootlets fall back into the umber water she turned to him with a cool tone. “You sound proud to have caught so careful and intellectual an elder race as the Z’Tang in a mistake, Robert. As one of your teledramas might put it, ‘The Eatees and their Library are caught with egg on their faces once again.’ Is that it?”

“Now wait a minute. I—”

“Tell me, do you humans plan to hoard this information, gloating over your cleverness each time you dole out portions? Or will you flaunt it, crying far and wide what any race with sense already knows — that the Great Library is not and never has been perfect?”

Robert winced. The stereotypical Tymbrimi, as pictured by most Earthlings, was adaptable, wise, and often mischievous. But right now Athaclena sounded more like any irritable, opinionated young fern with a chip on her shoulder.

True, some Earthlings went too far in criticizing Galactic civilization. As the first known “wolfling” race in over fifty megayears, humans sometimes boasted too loudly that they were the only species now living who had bootstrapped themselves into space without anybody’s help. What need had they to take for granted everything found in the Great Library of the Five Galaxies? Terran popular media tended to encourage an attitude of contempt for aliens who would rather look things up than find out for themselves.

There was a reason for encouraging this stance. The alternative, according to Terragens psychological scientists, would be a crushing racial’ inferiority complex. Pride was a vital thing for the only “backward” clan in the known universe. It stood between humanity and despair.

Unfortunately, the attitude had also alienated some species who might otherwise have been friendly to Mankind.

But on that count, were Athaclena’s people all that innocent? The Tymbrimi, also, were famed for finding loopholes in tradition and for not being satisfied with what was inherited from the past.

“When will you humans learn that the universe is dangerous, that there are many ancient and powerful clans who have no love of upstarts, especially newcomers who brashly set off changes without understanding the likely consequences!”

Now Robert knew what Athaclena was referring to, what the real source of this outburst was. He rose from the poolside and dusted his hands. “Look, neither of us really knows what’s going on out there in the galaxy right now. But it’s hardly our fault that a dolphin-crewed starship—”

“The Streaker.”

“—that the Streaker happened to discover something bizarre, something overlooked all these aeons. Anyone could have stumbled onto it! Hell, Athaclena. We don’t even know what it was that those poor neo-dolphins found! Last anyone heard, their ship was being chased from the Morgran transfer point to Ifni-knows-where by twenty different fleets — all fighting over the right to capture her.”