Shame surged through Pallis.

He turned to the battle. "All right, lad," he said briskly. "On my count. Remember, if you can't hit a miner douse your flame; we're not here to bomb our own people." The tree swept over the melee; he saw faces turn up to his shadow like scorched skitter flowers. The nearest plate ship was mere yards away. "Three... two..."

"Pallis!"

Pallis turned sharply. One of the other pilots stood balancing on the trunk of his tree, his hands cupped to his mouth. He turned and pointed skywards. Two more mine craft flew above him, their ragged edges silhouetted against the sky. Squinting, Pallis could make out miners grinning down at him, the glint of gla.s.s in their hands; the miners were obviously trying to get above his trees.

"s.h.i.t."

"What do we do, Pallis?"

"We've underestimated them. They've caught us out, ambushed us. d.a.m.n it. Come on, lad, don't just stand there. We've got to rise before they get above us. You work on the bowls near the rim, and I'll get to the trunk."

Nead stared at the encroaching forms of the miners as if unable to accept this distraction from the simple verities of the battle below.

"Move!" Pallis snapped, thumping his shoulder.

Nead moved.

A floor of smoke spread beneath the trees, spilling over the battlefield. The great wheels lurched up and away from the deck... but the mine craft were smaller, faster and far more maneuverable. Effortlessly they moved into position above the flight.

Pallis felt his shoulders sag. He imagined a fire bomb hitting the dry branches of his tree. The foliage would burn like old paper; the structure would disintegrate and send blazing fragments raining over the deckWell, he wasn't dead yet. "Scatter!" he yelled to his pilots. "They can't take us all."

The formation broke with what seemed ponderous slowness. The two mine craft split up, each making for a tree...

And one of them was Pallis's.

As the plate descended the tree-pilot's eyes met those of the miner above him. Nead came to stand close by the pilot. Pallis reached out, found Nead's shoulder, squeezed hardThen a cold breeze shook the tree and a shadow swept across his face, shocking and unexpected. A huge form sailed across the face of the star above the Raft.

"A whale..." Pallis felt his jaw drop. The great beast was no more than a hundred yards above the deck of the Raft; never in his life had he known a whale to come so close.

When the miners attacking Pallis saw the great, translucent ceiling mere yards above them they called out in panic and jerked at their controls. The plate wobbled, spun about, then shot away.

Bewildered, Pallis turned to survey the Platform battle. The whale's cloudy shadow swept across tiny, struggling humans. Men dropped their weapons and fled. The remaining miners' craft squirted into the air and sailed over the lip of the Raft.

Save for the dead and wounded, the Platform was soon deserted. Fires flickered desultorily from a dozen piles of wreckage.

Nead was sobbing. "It's over, isn't it?"

"The invasion? Yes, lad; it's over. For now, at any rate... Thanks to that miracle." He stared up at the whale, imagining the confusion it must be causing as people looked up from the Raft's avenues and factories at this monster in the sky. "But the miners will be back. Or maybe," he added grimly, "we'll be forced to go to meet them..."

His voice tailed away.

Clinging to the belly of the whale, waving feebly, was a man.

At the outbreak of the miners' attack Gover had joined the mob crowding down the stairway from the Platform, using his fists and elbows to escape the flying gla.s.s, the screams, the fire. Now, as suddenly as it had begun, the attack was over. Gover crawled from his shelter under the Platform and climbed cautiously back up the stairs.

Fearfully he scanned the burning shelters, the blackened bodies - until he saw Decker. The big man was stalking through the devastation, bending to a.s.sist medical efforts, throwing a kick at the scorched ruin of a bookcase. His motions had the look of a man caged by frustration and anger.

But he was obviously far too busy to have observed that Gover had made himself scarce during the battle. With relief Gover hurried toward Decker, eager to be noticed now; his footsteps crunched over shattered gla.s.s.

A shadow swept across the littered deck. Gover quailed, twisted his head and looked up.

A whale! And no more than a hundred yards above the Raft, drifting like a vast, translucent balloon. What the h.e.l.l was going on? His agile mind bubbled with speculation. He'd heard tales that the whales could be trapped and hunted. Maybe he could have Decker send up some of those d.a.m.n fool tree-pilots; he had a gratifying vision of standing at the rim of a tree, hurling his fire bombs into a huge, staring eyeSomeone thumped his arm. "Get out of the way, d.a.m.n you."

Two men were trying to get past him. They half-dragged a woman; her face was ruined by flame, and tears leaked steadily from her remaining eye. Gover, annoyed, prepared to snap at the men - these weren't even Committee members... but something about the tired tension in their faces made him step aside.

He glanced up once more, noticing without interest that a tree was rising toward the whale... then he made out a dark, irregular blot on the whale's hide. He squinted against the almost direct starlight.

By the Bones, it was a man. A coa.r.s.e wonder blossomed in Gover, and for a brief moment his self-centeredness evaporated. How the h.e.l.l could a man end up riding a whale?

The whale rolled slowly, bringing the man a little closer. There was something naggingly familiar about the whale rider's dimly seen frameGover had no idea what was going on; but maybe he could make something out of this.

His breath hissing through his teeth, Gover worked his way through the wounded and battle-weary, searching for Decker.

In the hours after he had "persuaded" the whale to leave its school, Rees had often wished he could die.

The whale climbed steadily out of the Nebula's depths, convulsed with loneliness and regret at leaving its companions. It drowned Rees in a huge pain, burnt him with the fierce, enormous agony of it all. He had been unable to eat, sleep; he had lain against the stomach wall, barely able to move, even his breathing constricted; at times, barely conscious, he had found himself squirming across the belly floor's warm slime.

But he kept his concentration. Like match flames in a wind he held before his mind's eye images of Hollerbach, Pallis and the rest; and with the Raft fixed in his thoughts, he crooned the whales' song, over and over.

Shifts had pa.s.sed as Rees lay there, dreading sleep. Then, quite abruptly, he sensed a change; a breeze of confusion had been added to the whale's mental storm, and the beast seemed to be sweeping through tight curves in the air. He rolled onto his belly and peered through the murky cartilage.

At first he could not recognize what he saw. A vast, rust-brown disc which dwarfed even the whale, a spa.r.s.e forest of trees turning slowly over unlit avenues of metal...

It was the Raft.

With sudden strength he had torn at the cartilage before his face, forcing his fingers through the dense, fibrous material.

The tree rose steadily toward the rolling bulk of the whale.

"Come on, boy," Pallis snapped. "Whoever's up there saved our skins. And now we're going to save him."

Reluctantly Nead worked at his fire bowls. "Surely you don't think he brought the whale here intentionally?"

Pallis shrugged. "What other explanation is there? How many times have you seen a whale come so close to the Raft? Never, that's how many. And how often do you see a man riding a whale?

"Two impossible events in one shift? Nead, the law of the simplest hypothesis tells you that it's all got to be connected." Nead glanced at him curiously. "You see," Pallis grinned, "even Scientists Third Cla.s.s don't have the monopoly on knowledge. Now work those b.l.o.o.d.y bowls!"

The tree rose from its blanket of smoke. Soon the whale filled the sky; it was a monstrous, rolling ceiling, with the pa.s.senger carried around and around like a child on a roundabout.

As the tree closed, its rotation slowed jerkily, despite all Nead's efforts. At last it came to rest altogether perhaps twenty yards beneath the belly of the whale.

The whale's three eyes rolled downwards toward the succulent foliage.

"There's nothing I can do," Nead called. "The d.a.m.n smoke's thick enough to walk on, but she just won't budge."

"Nead, a tree has about the same affection for a whale as a plate of meat-sim has for you. She's doing her best; just hold her steady." He cupped his hands and bellowed across the air. "Hey, you! On the whale!"

He was answered by a tentative wave.

"Listen, we can't get any closer. You'll have to jump! Do you understand?"

A long pause, then another wave.

"I'll try to help you," Pallis called. "The whale's spin should throw you across; all you have to do is let go at the right time."

The man buried his face in the flesh of the whale, as if utterly weary. "Nead, the guy doesn't look too healthy," Pallis murmured. "When he comes this way he might not do a good job of grabbing hold. Forget the fire bowls for a minute, and stand ready to run where he hits."

Nead nodded and straightened up, toes locked in the foliage.

"You up there... we'll do this on the next turn. All right?"

Another wave.

Pallis visualized the man parting from the whale. He would leave the spinning body tangentially, travel in a more or less straight line to the tree. There should really be no problem - provided the whale didn't take it into its head to fly off at the last second"Now! Let go!"

The man raised his head - and, with agonizing slowness, curved his legs beneath him.

"That's too slow!" Pallis cried. "Hold on or you'll..."

The man kicked away, sailing along a path that was anything but tangential to the whale's spin.

"...Or you'll miss us," Pallis whispered.

"By the Bones, Pallis, it's going to be close."

"Shut up and stand ready."

The seconds pa.s.sed infinitely slowly. The man seemed limp, his limbs dangling like lengths of rope. Thanks to the man's release the whale's spin had thrown him to Pallis's right - but, on the other hand, his kick had taken him to the left-and the two effects together were bringing him down Pallis's throat; suddenly the man became an explosion of arms and legs that plummeted out of the sky. The man's bulk crumpled against Pallis's chest, knocking him backwards into the foliage.

The whale, with a huge, relieved shudder, soared into the sky.

Nead lifted the man off Pallis and laid him on his back. Under a tangle of filthy beard the man's skin was stretched tight over his cheek bones. His eyes were closed, and the battered remnants of a coverall clung to his frame.

Nead scratched his head. "I know this guy... I think."

Pallis laughed, rubbing his bruised chest. "Rees. I should have b.l.o.o.d.y known it would be you."

Rees half-opened his eyes; when he spoke his voice was dry as dust. "h.e.l.lo, tree-pilot. I've had a h.e.l.l of a trip."

Pallis was embarra.s.sed to find his eyes misting up. "I bet you did. You nearly missed, you d.a.m.n idiot. It would have been easy if you hadn't decided to turn somersaults on the way."

"I had every... confidence in you, my friend." Rees struggled to sit up. "Pallis, listen," he said.

Pallis frowned. "What?"

A smile twisted Rees's broken lips. "It's kind of difficult to explain. You have to take me to Hollerbach. I think I know how to save the world..."

"You know what?"

Rees looked troubled. "He's still alive, isn't he?"

Pallis laughed. "Who, Hollerbach? They could no more get rid of that old b.u.g.g.e.r than they can get rid of you, it seems. Now lie back and I'll take you home."

With a sigh, Rees settled among the leaves.

By the time the tree had docked Rees seemed stronger. He emptied one of Pallis's flasks of water and made inroads into a slab of meat-sim. "The whale flesh kept me alive in the short term, but who knows what vitamin and protein deficiencies I suffered..."

Pallis eyed his remaining food warily. "Just make sure you relieve your protein deficiencies before you start on my foliage."

With Pallis's support Rees slid down the tree's tether cable to the deck. At the base Pallis said, "Now, come back to my cabin and rest before-"

"There's no time," Rees said. "I have to get to Hollerbach. There's so much to do... we have to get started before we become too weak to act..." His eyes flickered anxiously around the cable thicket. "...It's dark," he said slowly.

"That's a good word for it," Pallis said grimly. "Look, Rees, things haven't got any better here. Decker's in charge, and he's neither a fool nor a monster; but the fact is that things are steadily falling apart. Maybe it's already too late-"

Rees met his eyes with a look of clear determination. "Pilot, take me to Hollerbach," he said gently.

Pallis, surprised, felt invigorated by Rees's answer. Under his physical weakness Rees had changed, become confident - almost inspiring. But then, given all his fantastic experiences, perhaps it would have been stranger if he hadn't changed"We don't want any trouble, pilot."

The voice came from the gloom of the cable thicket. Pallis stepped forward, hands on hips. "Who's that?"

Two men stepped forward, one tall, both looming as wide as supply machines. They wore the ostentatiously ripped tunics that were the uniform of Committee functionaries.

"Seel and Plath," Pallis groaned. "Remember these two clowns, Rees? Decker's tame muscles... What do you boneheads want?"

Seel , short, square and bald, stepped forward, finger stabbing at Pallis's chest. "Now, look, Pallis, we've come for the miner, not you. I know we've locked fists before..."

Pallis lifted his arms, letting the muscles bunch under his shirt. "We have, haven't we?" he said easily. "I'll tell you what. Why don't we finish it off? Eh?"

Seel took a pace forward.

Rees stepped between them. "Forget it, tree-pilot," he said sadly. "I'd have to face this c.r.a.p sometime; let's get it over..."

Plath took Rees's arm, none too gently, and they began to make their way through the cable thicket. Rees's footsteps were airy and unsteady.

Pallis shook his head angrily. "The poor b.a.s.t.a.r.d's just hitched a ride on a whale, for G.o.d's sake; can't you let him be? Eh? Hasn't he suffered enough?"

But - with only a last, longing stare from Seel - the little party walked away.

Pallis growled with frustration. "Finish up the work here," he spat at Nead.

Nead straightened from his work at the cable anchor. "Where are you going?"

"After them, of course. Where else?" And the tree-pilot stalked away through the cables.

By the time they'd reached the Platform Rees felt his gait become watery, wavering; his two captors weren't so much restraining him, he thought wryly, as holding him up. After they climbed the shallow staircase to the deck of the Platform he murmured, "Thanks..."