Ogunwe looked at her levelly.

"We're not going to invade the Kingdom," he said, "but if the Kingdom invades us, they had better be ready for war, because we are prepared. Mrs. Coulter, I am a king, but it's my proudest task to join Lord Asriel in setting up a world where there are no kingdoms at all. No kings, no bishops, no priests. The Kingdom of Heaven has been known by that name since the Authority first set himself above the rest of the angels. And we want no part of it. This world is different. We intend to be free citizens of the Republic of Heaven."

Mrs. Coulter wanted to say more, to ask the dozen questions that rose to her lips, but the king had moved on, unwilling to keep his commander waiting, and she had to follow.

The staircase led so far down that by the time it reached a level floor, the sky behind them at the head of the flight was quite invisible. Well before halfway she had little breath left, but she made no complaint and moved on down till it opened out into a massive hall lit by glowing crystals in the pillars that supported the roof. Ladders, gantries, beams, and walkways crossed the gloom above, with small figures moving about them purposefully.

Lord Asriel was speaking to his commanders when Mrs. Coulter arrived, and without waiting to let her rest, he moved on across the great hall, where occasionally a bright figure would sweep through the air or alight on the floor for a brief snatched word with him. The air was dense and warm. Mrs. Coulter noticed that, presumably as a courtesy to Lord Roke, every pillar had an empty bracket at human head height so that his hawk could perch there and allow the Gallivespian to be included in the discussion.

But they did not stay in the great hall for long. At the far side, an attendant hauled open a heavy double door to let them through, onto the platform of a railway. There waiting was a small closed carriage, drawn by an anbaric locomotive.

The engineer bowed, and his brown monkey daemon retreated behind his legs at the sight of the golden monkey with the chained hands. Lord Asriel spoke to the man briefly and showed the others into the carriage, which, like the hall, was lit by those glowing crystals, held on silver brackets against mirrored mahogany panels.

As soon as Lord Asriel had joined them, the train began to move, gliding smoothly away from the platform and into a tunnel, accelerating briskly. Only the sound of the wheels on the smooth track gave any idea of their speed.

"Where are we going?" Mrs. Coulter asked.

"To the armory," Lord Asriel said shortly, and turned away to talk quietly with the angel.

Mrs. Coulter said to Lord Roke, "My lord, are your spies always sent out in pairs?"

"Why do you ask?"

"Simple curiosity. My daemon and I found ourselves at a stalemate when we met them recently in that cave, and I was intrigued to see how well they fought."

"Why intrigued intrigued? Did you not expect people of our size to be good fighters?"

She looked at him coolly, aware of the ferocity of his pride.

"No," she said. "I thought we would beat you easily, and you very nearly beat us. I'm happy to admit my mistake. But do you always fight in pairs?"

"You are a pair, are you not, you and your daemon? Did you expect us to concede the advantage?" he said, and his haughty stare, brilliantly clear even in the soft light of the crystals, dared her to ask more.

She looked down modestly and said nothing.

Several minutes went past, and Mrs. Coulter felt the train taking them downward, even deeper into the mountain's heart. She couldn't guess how far they went, but when at least fifteen minutes had gone by, the train began to slow; and presently they drew up to a platform where the anbaric lights seemed brilliant after the darkness of the tunnel.

Lord Asriel opened the doors, and they got out into an atmosphere so hot and sulphur-laden that Mrs. Coulter had to gasp. The air rang with the pounding of mighty hammers and the clangorous screech of iron on stone.

An attendant hauled open the doors leading off the platform, and instantly the noise redoubled and the heat swept over them like a breaking wave. A blaze of scorching light made them shade their eyes; only Xaphania seemed unaffected by the onslaught of sound and light and heat. When her senses had adjusted, Mrs. Coulter looked around, alive with curiosity.

She had seen forges, ironworks, manufactories in her own world; the biggest seemed like a village smithy beside this. Hammers the size of houses were lifted in a moment to the distant ceiling and then hurled downward to flatten balks of iron the size of tree trunks, pounding them flat in a fraction of a second with a blow that made the very mountain tremble; from a vent in the rocky wall, a river of sulphurous molten metal flowed until it was cut off by an adamant gate, and the brilliant seething flood rushed through channels and sluices and over weirs into row upon row of molds, to settle and cool in a cloud of evil smoke; gigantic slicing machines and rollers cut and folded and pressed sheets of inch-thick iron as if it were tissue paper, and then those monstrous hammers pounded it flat again, layering metal upon metal with such force that the different layers became one tougher one, over and over again.

If Iorek Byrnison could have seen this armory, he might have admitted that these people knew something about working with metal. Mrs. Coulter could only look and wonder. It was impossible to speak and be understood, and no one tried. And now Lord Asriel was gesturing to the small group to follow him along a grated walkway suspended over an even larger vault below, where miners toiled with picks and spades to hack the bright metals from the mother rock.

They passed over the walkway and down a long rocky corridor, where stalactites hung gleaming with strange colors and where the pounding and grinding and hammering gradually faded. Mrs. Coulter could feel a cool breeze on her heated face. The crystals that gave them light were neither mounted on sconces nor enclosed in glowing pillars, but scattered loosely on the floor, and there were no flaring torches to add to the heat, so little by little the party began to feel cold again; and presently they came out, quite suddenly, into the night air.

They were at a place where part of the mountain had been hacked away, making a space as wide and open as a parade ground. Farther along they could see, dimly lit, great iron doors in the mountainside, some open and some shut; and from out of one of the mighty doorways, men were hauling something draped in a tarpaulin.

"What is that?" Mrs. Coulter said to the African king, and he replied: "The intention craft."

Mrs. Coulter had no idea what that could mean, and watched with intense curiosity as they prepared to take off the tarpaulin.

She stood close to King Ogunwe, as if for shelter, and said, "How does it work? What does it do?"

"We're about to see," said the king.

It looked like some kind of complex drilling apparatus, or the cockpit of a gyropter, or the cabin of a massive crane. It had a glass canopy over a seat with at least a dozen levers and handles banked in front of it. It stood on six legs, each jointed and sprung at a different angle to the body, so that it seemed both energetic and ungainly; and the body itself was a mass of pipe work, cylinders, pistons, coiled cables, switchgear, valves, and gauges. It was hard to tell what was structure and what was not, because it was only lit from behind, and most of it was hidden in gloom.

Lord Roke on his hawk had glided up to it directly, circling above, examining it from all sides. Lord Asriel and the angel were close in discussion with the engineers, and men were clambering down from the craft itself, one carrying a clipboard, another a length of cable.

Mrs. Coulter's eyes gazed at the craft hungrily, memorizing every part of it, making sense of its complexity. And as she watched, Lord Asriel swung himself up into the seat, fastening a leather harness around his waist and shoulders, and setting a helmet securely on his head. His daemon, the snow leopard, sprang up to follow him, and he turned to adjust something beside her. The engineer called up, Lord Asriel replied, and the men withdrew to the doorway.

The intention craft moved, though Mrs. Coulter was not sure how. It was almost as if it had quivered, though there it was, quite still, poised with a strange energy on those six insect legs. As she looked, it moved again, and then she saw what was happening: various parts of it were revolving, turning this way and that, scanning the dark sky overhead. Lord Asriel sat busily moving this lever, checking that dial, adjusting that control; and then suddenly the intention craft vanished.

Somehow, it had sprung into the air. It was hovering above them now, as high as a treetop, turning slowly to the left. There was no sound of an engine, no hint of how it was held against gravity. It simply hung in the air.

"Listen," said King Ogunwe. "To the south."

She turned her head and strained to hear. There was a wind that moaned around the edge of the mountain, and there were the deep hammer blows from the presses, which she felt through the soles of her feet, and there was the sound of voices from the lit doorway, but at some signal the voices stopped and the lights were extinguished. And in the quiet Mrs. Coulter could hear, very faintly, the chop-chop-chop chop-chop-chop of gyropter engines on the gusts of wind. of gyropter engines on the gusts of wind.

"Who are they?" she said quietly.

"Decoys," said the king. "My pilots, flying a mission to tempt the enemy to follow. Watch."

She widened her eyes, trying to see anything against the heavy dark with its few stars. Above them, the intention craft hung as firmly as if it were anchored and bolted there; no gust of wind had the slightest effect on it. No light came from the cockpit, so it was very difficult to see, and the figure of Lord Asriel was out of sight completely.

Then she caught the first sight of a group of lights low in the sky, at the same moment as the engine sound became loud enough to hear steadily. Six gyropters, flying fast, one of them seemingly in trouble, for smoke trailed from it, and it flew lower than the others. They were making for the mountain, but on a course to take them past it and beyond.

And behind them, in close pursuit, came a motley collection of fliers. It was not easy to make out what they were, but Mrs. Coulter saw a heavy gyropter of a strange kind, two straight-winged aircraft, one great bird that glided with effortless speed carrying two armed riders, and three or four angels.

"A raiding party," said King Ogunwe.

They were closing on the gyropters. Then a line of light blazed from one of the straight-winged aircraft, followed a second or two later by a sound, a deep crack. But the shell never reached its target, the crippled gyropter, because in the same instant as they saw the light, and before they heard the crack, the watchers on the mountain saw a flash from the intention craft, and a shell exploded in midair.

Mrs. Coulter had hardly time to understand that almost instantaneous sequence of light and sound before the battle was under way. Nor was it at all easy to follow, because the sky was so dark and the movement of every flier so quick; but a series of nearly silent flashes lit the mountainside, accompanied by short hisses like the escape of steam. Each flash struck somehow at a different raider: the aircraft caught fire or exploded; the giant bird uttered a scream like the tearing of a mountain-high curtain and plummeted onto the rocks far below; and as for the angels, each of them simply vanished in a drift of glowing air, a myriad particles twinkling and glowing dimmer until they flickered out like a dying firework.

Then there was silence. The wind carried away the sound of the decoy gyropters, which had now disappeared around the flank of the mountain, and no one watching spoke. Flames far below glared on the underside of the intention craft, still somehow hovering in the air and now turning slowly as if to look around. The destruction of the raiding party was so complete that Mrs. Coulter, who had seen many things to be shocked by, was nevertheless shocked by this. As she looked up at the intention craft, it seemed to shimmer or dislodge itself, and then there it was, solidly on the ground again.

King Ogunwe hurried forward, as did the other commanders and the engineers, who had thrown open the doors and let the light flood out over the proving ground. Mrs. Coulter stayed where she was, puzzling over the workings of the intention craft.

"Why is he showing it to us?" her daemon said quietly.

"Surely he can't have read our mind," she replied in the same tone.

They were thinking of the moment in the adamant tower when that sparklike idea had flashed between them. They had thought of making Lord Asriel a proposition: of offering to go to the Consistorial Court of Discipline and spying for him. She knew every lever of power; she could manipulate them all. It would be hard at first to convince them of her good faith, but she could do it. And now that the Gallivespian spies had left to go with Will and Lyra, surely Asriel couldn't resist an offer like that.

But now, as they looked at that strange flying machine, another idea struck even more forcibly, and she hugged the golden monkey with glee.

"Asriel," she called innocently, "may I see how the machine works?"

He looked down, his expression distracted and impatient, but full of excited satisfaction, too. He was delighted with the intention craft; she knew he wouldn't be able to resist showing it off.

King Ogunwe stood aside, and Lord Asriel reached down and pulled her up into the cockpit. He helped her into the seat and watched as she looked around the controls.

"How does it work? What powers it?" she said.

"Your intentions," he said. "Hence the name. If you intend to go forward, it will go forward."

"That's no answer. Come on, tell me. What sort of engine is it? How does it fly? I couldn't see anything aerodynamic at all. But these controls... from inside, it's almost like a gyropter."

He was finding it hard not to tell her; and since she was in his power, he did. He held out a cable at the end of which was a leather grip, deeply marked by his daemon's teeth.

"Your daemon," he explained, "has to hold this handle-whether in teeth, or hands, it doesn't matter. And you have to wear that helmet. There's a current flowing between them, and a capacitor amplifies it-oh, it's more complicated than that, but the thing's simple to fly. We put in controls like a gyropter for the sake of familiarity, but eventually we won't need controls at all. Of course, only a human with a daemon can fly it."

"I see," she said.

And she pushed him hard, so that he fell out of the machine.

In the same moment she slipped the helmet on her head, and the golden monkey snatched up the leather handle. She reached for the control that in a gyropter would tilt the airfoil, and pushed the throttle forward, and at once the intention craft leapt into the air.

But she didn't quite have the measure of it yet. The craft hung still for some moments, slightly tilted, before she found the controls to move it forward, and in those few seconds, Lord Asriel did three things. He leapt to his feet; he put up his hand to stop King Ogunwe from ordering the soldiers to fire on the intention craft; and he said, "Lord Roke, go with her, if you would be so kind."

The Gallivespian urged his blue hawk upward at once, and the bird flew straight to the still-open cabin door. The watchers below could see the woman's head looking this way and that, and the golden monkey, likewise, and they could see that neither of them noticed the little figure of Lord Roke leaping from his hawk into the cabin behind them.

A moment later, the intention craft began to move, and the hawk wheeled away to skim down to Lord Asriel's wrist. No more than two seconds later, the aircraft was already vanishing from sight in the damp and starry air.

Lord Asriel watched with rueful admiration.

"Well, King, you were quite right," he said, "and I should have listened to you in the first place. She is Lyra's mother; I might have expected something like that."

"Aren't you going to pursue her?" said King Ogunwe.

"What, and destroy a perfectly good aircraft? Certainly not."

"Where d'you think she'll go? In search of the child?"

"Not at first. She doesn't know where to find her. I know exactly what she'll do: she'll go to the Consistorial Court and give them the intention craft as an earnest pledge of good faith, and then she'll spy. She'll spy on them for us. She's tried every other kind of duplicity: that one'll be a novel experience. And as soon as she finds out where the girl is, she'll go there, and we shall follow."

"And when will Lord Roke let her know he's come with her?"

"Oh, I think he'll keep that as a surprise, don't you?"

They laughed, and moved back into the workshops, where a later, more advanced model of the intention craft was awaiting their inspection.

SEVENTEEN.

OIL AND LACQUER.

Now the serpent was more subtil than any beast of the field which the Lord God had made. GENESIS Mary Malone was constructing a mirror. Not out of vanity, for she had little of that, but because she wanted to test an idea she had. She wanted to try and catch Shadows, and without the instruments in her laboratory she had to improvise with the materials at hand.

Mulefa technology had little use for metal. They did extraordinary things with stone and wood and cord and shell and horn, but what metals they had were hammered from native nuggets of copper and other metals that they found in the sand of the river, and they were never used for toolmaking. They were ornamental. technology had little use for metal. They did extraordinary things with stone and wood and cord and shell and horn, but what metals they had were hammered from native nuggets of copper and other metals that they found in the sand of the river, and they were never used for toolmaking. They were ornamental. Mulefa Mulefa couples, for example, on entering marriage, would exchange strips of bright copper, which were bent around the base of one of their horns with much the same meaning as a wedding ring. couples, for example, on entering marriage, would exchange strips of bright copper, which were bent around the base of one of their horns with much the same meaning as a wedding ring.

So they were fascinated by the Swiss Army knife that was Mary's most valuable possession.

Atal, the zalif zalif who was her particular friend, exclaimed with astonishment one day when Mary unfolded the knife and showed her all the parts, and explained as well as she could, with her limited language, what they were for. One attachment was a miniature magnifying glass, with which she began to burn a design onto a dry branch, and it was that which set her thinking about Shadows. who was her particular friend, exclaimed with astonishment one day when Mary unfolded the knife and showed her all the parts, and explained as well as she could, with her limited language, what they were for. One attachment was a miniature magnifying glass, with which she began to burn a design onto a dry branch, and it was that which set her thinking about Shadows.

They were fishing at the time, but the river was low and the fish must have been elsewhere, so they let the net lie across the water and sat on the grassy bank and talked, until Mary saw the dry branch, which had a smooth white surface. She burned the design-a simple daisy-into the wood, and delighted Atal; but as the thin line of smoke wafted up from the spot where the focused sunlight touched the wood, Mary thought: If this became fossilized, and a scientist in ten million years found it, they could still find Shadows around it, because I've worked on it.

She drifted into a sun-doped reverie until Atal asked: What are you dreaming?

Mary tried to explain about her work, her research, the laboratory, the discovery of shadow particles, the fantastical revelation that they were conscious, and found the whole tale gripping her again, so that she longed to be back among her equipment.

She didn't expect Atal to follow her explanation, partly because of her own imperfect command of their language, but partly because the mulefa mulefa seemed so practical, so strongly rooted in the physical everyday world, and much of what she was saying was mathematical; but Atal surprised her by saying, seemed so practical, so strongly rooted in the physical everyday world, and much of what she was saying was mathematical; but Atal surprised her by saying, Yes-we know what you mean-we call it Yes-we know what you mean-we call it... and then she used a word that sounded like their word for light light.

Mary said, Light? Light?

Atal said, Not light, but Not light, but... and said the word more slowly for Mary to catch, explaining: like the light on water when it makes small ripples, at sunset, and the light comes off in bright flakes, we call it that, but it is a make-like. like the light on water when it makes small ripples, at sunset, and the light comes off in bright flakes, we call it that, but it is a make-like.

Make-like was their term for metaphor, Mary had discovered. was their term for metaphor, Mary had discovered.

So she said, It is not really light, but you see it and it looks like that light on water at sunset? It is not really light, but you see it and it looks like that light on water at sunset?

Atal said, Yes. All the mulefa have this. You have, too. That is how we knew you were like us and not like the grazers, who don't have it. Even though you look so bizarre and horrible, you are like us, because you have Yes. All the mulefa have this. You have, too. That is how we knew you were like us and not like the grazers, who don't have it. Even though you look so bizarre and horrible, you are like us, because you have-and again came that word that Mary couldn't hear quite clearly enough to say: something like sraf, sraf, or or sarf, sarf, accompanied by a leftward flick of the trunk. accompanied by a leftward flick of the trunk.

Mary was excited. She had to keep herself calm enough to find the right words.

What do you know about it? Where does it come from?

From us, and from the oil, was Atal's reply, and Mary knew she meant the oil in the great seedpod wheels. was Atal's reply, and Mary knew she meant the oil in the great seedpod wheels.

From you?

When we have grown up. But without the trees it would just vanish again. With the wheels and the oil, it stays among us.

When we have grown up... Again Mary had to keep herself from becoming incoherent. One of the things she'd begun to suspect about Shadows was that children and adults reacted to them differently, or attracted different kinds of Shadow activity. Hadn't Lyra said that the scientists in her world had discovered something like that about Dust, which was their name for Shadows? Here it was again.

And it was connected to what the Shadows had said to her on the computer screen just before she'd left her own world: whatever it was, this question, it had to do with the great change in human history symbolized in the story of Adam and Eve; with the Temptation, the Fall, Original Sin. In his investigations among fossil skulls, her colleague Oliver Payne had discovered that around thirty thousand years ago a great increase had taken place in the number of shadow particles associated with human remains. Something had happened then, some development in evolution, to make the human brain an ideal channel for amplifying their effects.

She said to Atal: How long have there been mulefa?

And Atal said: Thirty-three thousand years.