Every fiber in the trunk, the bark, the roots seemed to cry out separately against this murder. But it fell and fell, all the great length of it smashed its way out of the grove and seemed to lean toward Mary before crashing into the ground like a wave against a breakwater; and the colossal trunk rebounded up a little way, and settled down finally, with a groaning of torn wood.

She ran up to touch the tossing leaves. There was her rope; there were the splintered ruins of her platform. Her heart thudding painfully, she climbed in among the fallen branches, hauling herself through the familiar boughs at their unfamiliar angles, and balanced herself as high up as she could get.

She braced herself against a branch and took out the spyglass. Through it she saw two quite different movements in the sky.

One was that of the clouds, driven across the moon in one direction, and the other was that of the stream of Dust, seeming to cross it in quite another.

And of the two, the Dust was flowing more quickly and at much greater volume. In fact, the whole sky seemed to be flowing with it, a great inexorable flood pouring out of the world, out of all the worlds, into some ultimate emptiness.

Slowly, as if they were moving themselves in her mind, things joined up.

Will and Lyra had said that the subtle knife was three hundred years old at least. So the old man in the tower had told them.

The mulefa mulefa had told her that the had told her that the sraf, sraf, which had nurtured their lives and their world for thirty-three thousand years, had begun to fail just over three hundred years ago. which had nurtured their lives and their world for thirty-three thousand years, had begun to fail just over three hundred years ago.

According to Will, the Guild of the Torre degli Angeli, the owners of the subtle knife, had been careless; they hadn't always closed the windows they opened. Well, Mary had found one, after all, and there must be many others.

Suppose that all this time, little by little, Dust had been leaking out of the wounds the subtle knife had made in nature...

She felt dizzy, and it wasn't only the swaying and rising and falling of the branches she was wedged among. She put the spyglass carefully in her pocket and hooked her arms over the branch in front, gazing at the sky, the moon, the scudding clouds.

The subtle knife was responsible for the small-scale, low-level leakage. It was damaging, and the universe was suffering because of it, and she must talk to Will and Lyra and find a way to stop it.

But the vast flood in the sky was another matter entirely. That was new, and it was catastrophic. And if it wasn't stopped, all conscious life would come to an end. As the mulefa mulefa had shown her, Dust came into being when living things became conscious of themselves; but it needed some feedback system to reinforce it and make it safe, as the had shown her, Dust came into being when living things became conscious of themselves; but it needed some feedback system to reinforce it and make it safe, as the mulefa mulefa had their wheels and the oil from the trees. Without something like that, it would all vanish. Thought, imagination, feeling, would all wither and blow away, leaving nothing but a brutish automatism; and that brief period when life was conscious of itself would flicker out like a candle in every one of the billions of worlds where it had burned brightly. had their wheels and the oil from the trees. Without something like that, it would all vanish. Thought, imagination, feeling, would all wither and blow away, leaving nothing but a brutish automatism; and that brief period when life was conscious of itself would flicker out like a candle in every one of the billions of worlds where it had burned brightly.

Mary felt the burden of it keenly. It felt like age. She felt eighty years old, worn out and weary and longing to die.

She climbed heavily out of the branches of the great fallen tree, and with the wind still wild in the leaves and the grass and her hair, set off back to the village.

At the summit of the slope she looked for the last time at the Dust stream, with the clouds and the wind blowing across it and the moon standing firm in the middle.

And then she saw what they were doing, at last: she saw what that great urgent purpose was.

They were trying to hold back the Dust flood. They were striving to put some barriers up against the terrible stream: wind, moon, clouds, leaves, grass, all those lovely things were crying out and hurling themselves into the struggle to keep the shadow particles in this universe, which they so enriched.

Matter loved loved Dust. It didn't want to see it go. That was the meaning of this night, and it was Mary's meaning, too. Dust. It didn't want to see it go. That was the meaning of this night, and it was Mary's meaning, too.

Had she thought there was no meaning in life, no purpose, when God had gone? Yes, she had thought that.

"Well, there is now," she said aloud, and again, louder: "There is now!"

As she looked again at the clouds and the moon in the Dust flow, they looked as frail and doomed as a dam of little twigs and tiny pebbles trying to hold back the Mississippi. But they were trying, all the same. They'd go on trying till the end of everything.

How long she stayed out, Mary didn't know. When the intensity of her feeling began to subside, and exhaustion took its place, she made her way slowly down the hill toward the village.

And when she was halfway down, near a little grove of knot-wood bushes, she saw something strange out on the mudflats. There was a glow of white, a steady movement: something coming up with the tide.

She stood still, gazing intently. It couldn't be the tualapi, tualapi, because they always moved in a flock, and this was on its own. But everything about it was the same-the sail-like wings, the long neck-it was one of the birds, no doubt about it. She had never heard of their moving about alone, and she hesitated before running down to warn the villagers, because the thing had stopped, in any case. It was floating on the water close to the path. because they always moved in a flock, and this was on its own. But everything about it was the same-the sail-like wings, the long neck-it was one of the birds, no doubt about it. She had never heard of their moving about alone, and she hesitated before running down to warn the villagers, because the thing had stopped, in any case. It was floating on the water close to the path.

And it was coming apart... No, something was getting off its back.

The something was a man.

She could see him quite clearly, even at that distance; the moonlight was brilliant, and her eyes were adjusted to it. She looked through the spyglass, and put the matter beyond doubt: it was a human figure, radiating Dust.

He was carrying something: a long stick of some kind. He came along the path quickly and easily, not running, but moving like an athlete or a hunter. He was dressed in simple dark clothes that would normally conceal him well; but through the spyglass he showed up as if he were under a spotlight.

And as he came closer to the village, she realized what that stick was. He was carrying a rifle.

She felt as if someone had poured icy water over her heart. Every separate hair on her flesh stirred.

She was too far away to do anything: even if she'd shouted, he wouldn't have heard. She had to watch as he stepped into the village, looking to the left and right, stopping every so often to listen, moving from house to house.

Mary's mind felt like the moon and the clouds trying to hold back the Dust as she cried out silently: Don't look under the tree-go away from the tree- But he moved closer and closer to it, finally stopping outside her own house. She couldn't bear it; she put the spyglass in her pocket and began to run down the slope. She was about to call out, anything, a wild cry, but just in time she realized that it might wake Will or Lyra and make them reveal themselves, and she choked it back.

Then, because she couldn't bear not knowing what the man was doing, she stopped and fumbled for the spyglass again, and had to stand still while she looked through it.

He was opening the door of her house. He was going inside it. He vanished from sight, although there was a stir in the Dust he left behind, like smoke when a hand is passed through it. Mary waited for an endless minute, and then he appeared again.

He stood in her doorway, looking around slowly from left to right, and his gaze swept past the tree.

Then he stepped off the threshold and stood still, almost at a loss. Mary was suddenly conscious of how exposed she was on the bare hillside, an easy rifle shot away, but he was only interested in the village; and when another minute or so had gone by, he turned and walked quietly away.

She watched every step he took down the river path, and saw quite clearly how he stepped onto the bird's back and sat cross-legged as it turned to glide away. Five minutes later they were lost to sight.

THIRTY-FIVE.

OVER THE HILLS AND FAR AWAY.

The birthday of my life Is come, my love is come to me. CHRISTINA ROSSETTI "Dr. Malone," said Lyra in the morning, "Will and me have got to look for our daemons. When we've found them, we'll know what to do. But we can't be without them for much longer. So we just want to go and look."

"Where will you go?" said Mary, heavy-eyed and headachy after her disturbed night. She and Lyra were on the riverbank, Lyra to wash, and Mary to look, surreptitiously, for the man's footprints. So far she hadn't found any.

"Don't know," said Lyra. "But they're out there somewhere. As soon as we came through from the battle, they ran away as if they didn't trust us anymore. Can't say I blame them, either. But we know they're in this world, and we thought we saw them a couple of times, so maybe we can find them."

"Listen," Mary said reluctantly, and told Lyra about the man she'd seen the night before.

As she spoke, Will came to join them, and both he and Lyra listened, wide-eyed and serious.

"He's probably just a traveler and he found a window and wandered through from somewhere else," Lyra said when Mary had finished. "Like Will's father did. There's bound to be all kinds of openings now. Anyway, if he just turned around and left, he can't have meant to do anything bad, can he?"

"I don't know. I didn't like it. And I'm worried about you going off on your own-or I would be if I didn't know you'd already done far more dangerous things than that. Oh, I don't know. But please be careful. Please look all around. At least out on the prairie you can see someone coming from a long way off..."

"If we do, we can escape straight away into another world, so he won't be able to hurt us," Will said.

They were determined to go, and Mary was reluctant to argue.

"At least," she said, "promise that you won't go in among the trees. If that man is still around, he might be hiding in a wood or a grove and you wouldn't see him in time to escape."

"We promise," said Lyra.

"Well, I'll pack you some food in case you're out all day."

Mary took some flat bread and cheese and some sweet, thirst-quenching red fruits, wrapped them in a cloth, and tied a cord around it for one of them to carry over a shoulder.

"Good hunting," she said as they left. "Please take care."

She was still anxious. She stood watching them all the way to the foot of the slope.

"I wonder why she's so sad," Will said as he and Lyra climbed the road up to the ridge.

"She's probably wondering if she'll ever go home again," said Lyra. "And if her laboratory'll still be hers when she does. And maybe she's sad about the man she was in love with."

"Mmm," said Will. "D'you think we'll we'll ever go home?" ever go home?"

"Dunno. I don't suppose I've got a home anyway. They probably couldn't have me back at Jordan College, and I can't live with the bears or the witches. Maybe I could live with the gyptians. I wouldn't mind that, if they'd have me."

"What about Lord Asriel's world? Wouldn't you want to live there?"

"It's going to fail, remember," she said.

"Why?"

"Because of what your father's ghost said, just before we came out. About daemons, and how they can only live for a long time if they stay in their own world. But probably Lord Asriel, I mean my father, couldn't have thought about that, because no one knew enough about other worlds when he started... All that," she said wonderingly, "all that bravery and skill... All that, all wasted! All for nothing!"

They climbed on, finding the going easy on the rock road, and when they reached the top of the ridge, they stopped and looked back.

"Will," she said, "supposing we don't don't find them?" find them?"

"I'm sure we will. What I'm wondering is what my daemon will be like."

"You saw her. And I picked her up," Lyra said, blushing, because of course it was a gross violation of manners to touch something so private as someone else's daemon. It was forbidden not only by politeness, but by something deeper than that-something like shame. A quick glance at Will's warm cheeks showed that he knew that just as well as she did.

They walked on side by side, suddenly shy with each other. But Will, not put off by being shy, said, "When does your daemon stop changing shape?"

"About... I suppose about our age, or a bit older. Maybe more sometimes. We used to talk about Pan settling, him and me. We used to wonder what he'd be-"

"Don't people have any idea?"

"Not when they're young. As you grow up you start thinking, well, they might be this or they might be that... And usually they end up something that fits. I mean something like your real nature. Like if your daemon's a dog, that means you like doing what you're told, and knowing who's boss, and following orders, and pleasing people who are in charge. A lot of servants are people whose daemons are dogs. So it helps to know what you're like and to find what you'd be good at. How do people in your your world know what they're like?" world know what they're like?"

"I don't know. I don't know much about my world. All I know is keeping secret and quiet and hidden, so I don't know much about... grownups, and friends. Or lovers. I think it'd be difficult having a daemon because everybody would know so much about you just by looking. I like to keep secret and stay out of sight."

"Then maybe your daemon'd be an animal that's good at hiding. Or one of those animals that looks like another-a butterfly that looks like a wasp, for disguise. They must have creatures like that in your world, because we have, and we're so much alike."

They walked on together in a friendly silence. All around them the wide, clear morning lay limpid in the hollows and pearly blue in the warm air above. As far as the eye could see, the great savanna rolled, brown, gold, buff-green, shimmering toward the horizon, and empty. They might have been the only people in the world.

"But it's not empty really," Lyra said.

"You mean that man?"

"No. You know what I mean."

"Yes, I do. I can see shadows in the grass... maybe birds," Will said.

He was following the little darting movements here and there. He found it easier to see the shadows if he didn't look at them. They were more willing to show themselves to the corners of his eye, and when he said so to Lyra, she said, "It's negative capability."

"What's that?"

"The poet Keats said it first. Dr. Malone knows. It's how I read the alethiometer. It's how you use the knife, isn't it?"

"Yes, I suppose it is. But I was just thinking that they might be the daemons."

"So was I, but..."

She put her finger to her lips. He nodded.

"Look," he said, "there's one of those fallen trees."

It was Mary's climbing tree. They went up to it carefully, keeping an eye on the grove in case another one should fall. In the calm morning, with only a faint breeze stirring the leaves, it seemed impossible that a mighty thing like this should ever topple, but here it was.

The vast trunk, supported in the grove by its torn-up roots and out on the grass by the mass of branches, was high above their heads. Some of those branches, crushed and broken, were themselves as big around as the biggest trees Will had ever seen; the crown of the tree, tight-packed with boughs that still looked sturdy, leaves that were still green, towered like a ruined palace into the mild air.

Suddenly Lyra gripped Will's arm.

"Shh," she whispered. "Don't look. I'm sure they're up there. I saw something move and I swear swear it was Pan..." it was Pan..."

Her hand was warm. He was more aware of that than of the great mass of leaves and branches above them. Pretending to gaze vacantly at the horizon, he let his attention wander upward into the confused mass of green, brown, and blue, and there-she was right!-there was a something that was not not the tree. And beside it, another. the tree. And beside it, another.

"Walk away," Will said under his breath. "We'll go somewhere else and see if they follow us."

"Suppose they don't... But yes, all right," Lyra whispered back.

They pretended to look all around; they set their hands on one of the branches resting on the ground, as if they were intending to climb; they pretended to change their minds, by shaking their heads and walking away.

"I wish we could look behind," Lyra said when they were a few hundred yards away.

"Just go on walking. They can see us, and they won't get lost. They'll come to us when they want to."

They stepped off the black road and into the knee-high grass, swishing their legs through the stems, watching the insects hovering, darting, fluttering, skimming, hearing the million-voiced chorus chirrup and scrape.

"What are you going to do, Will?" Lyra said quietly after they'd walked some way in silence.