A set of numbers was written on the parchment, arranged in a four by four grid, and Dalia quickly worked out that each line added up to the same number, no matter which way they were combined - vertically, horizontally or diagonally. Not only that, but each of the quadrants, the four centre squares, the corner squares and many other combinations added up to the same figure.
'Thirty-four,' she said. 'It's always thirty-four.'
The design was familiar to her and Dalia knew she had seen it before. No sooner had she wondered where, than the answer came to her.
'The Melancholia,' said Dalia, nodding at the parchment.
'What did you say?' asked the Protector.
His voice was human, but echoed with a metallic rasp beneath his bronze mask, and Dalia was momentarily taken aback that he'd actually responded to something she said.
'The symbol on your parchment,' she said. 'It's from an engraving. I saw it in a book I transcribed two years ago.'
'Two years ago? And you still remember it?'
'Yes,' nodded Dalia, hesitantly. 'I kind of remember stuff I've read and don't forget it.'
'It is the symbol of our master,' said the Protector.
'It's from an engraving of one of the old master prints,' said Dalia, her eyes taking on a glazed look as she spoke, talking more to herself than the Protector. 'It was so old, but then everything we transcribe in the great hall that's not from the expedition fleets is old. It was a picture of a woman, but she looked frustrated, as if she was annoyed at not being able to invent something ingenious. She had all sorts of equipment around her, weights, an hourglass and a hammer, but she looked sad, as if she just couldn't get the idea to take shape.'
The Protectors glanced at one another as Dalia spoke, each one gripping his stave tightly. Dalia caught the look and her words trailed off.
'What?' she asked.
The Protector disengaged the mag-lock clamps securing him to the deck and stepped towards her. The suddenness of his motion took her by surprise and she stumbled backwards, falling onto her backside as he loomed over her, the green glow of his eyes shining brightly within his tattered hood.
'I begin to see why we were sent to fetch you,' said the Protector.
'You do?' asked Dalia. 'And you were sent for me? Me? Dalia Cythera?'
'Yes, Dalia Cythera. Rho-mu 31 was sent to fetch you from Terra.'
'Rho-mu 31?'
'That is our designation,' said the Protector.
'What, all of you?'
'All of us, each of us. It is all the same.'
'All right, but why were you sent to fetch me?
'We were sent to fetch you before you were executed.'
'Executed?' exclaimed Dalia. 'For what?'
'Magos Ludd invoked the Law of the Divine Complexity,' explained Rho-mu 31. 'Individuals so accused attract the attention of our master.'
Dalia thought for a moment, her eyes fluttering beneath their lids as she recalled what that law concerned. 'Let me think, that's the belief that the structure and working of each machine has been set down by the Omnissiah and is therefore divine… and that to alter it is, oh…'
'You see now why we came for you?'
'Not really,' admitted Dalia. 'Anyway, who is your master, and what does he want with me? I'm just a transcriber of remembrance. I'm nobody.'
Rho-mu 31 shook his head, making a fist and placing it over the silver and bronze cog atop his staff.
'You are more than you realise, Dalia Cythera,' he said, 'but that, and more, will become clear to you when you meet our master: High Adept Koriel Zeth, Mistress of the Magma City.'
'The Magma City?' asked Dalia. 'Where is that?'
'At the edge of the Daedalia Planum, on the southern flank of Arsia Mons,' said Rho-mu 31, lifting his stave and touching it to an opaque panel on the vibrating hull of the starship. A flickering light crackled, and the panel began to change, slowly becoming more and more translucent until finally it was virtually transparent.
When this transformation was complete, Dalia gasped at the sight before her, her face bathed in a fiery red glow from the planet below. Its surface was clad in fire and metal, its atmosphere choked with striated clouds of pollution. Teeming with gargantuan sprawls of industry larger than the continents of Old Earth, the world seemed to throb with the heartbeat of monstrous hammers.
Plumes of fire and towering stacks of iron rose from its mountainous southern regions, and networks of gleaming steel spread out like cracks in the ground through which fractured light spilled into the sky.
'Is that…?'
'Mars,' confirmed Rho-mu 31. 'Domain of the Mechanicum.'
Supersonic shells tore through the gaggle of servitors feeding on the dead techno-mats, obliterating one instantly and blowing the limbs from another. Three others staggered back, chunks of flesh blasted from their emaciated frames. They refused to fall, however, their damaged brains unable to comprehend how grievously the guns of Cronus's Knight had wounded them.
'All yours, Maven,' said Cronus, cutting off the stream of shells.
'So glad you left me something to do,' replied Maven.