“Righto,” said Umma Balsum. “Two marks for the attempt. Five marks connection fee if I get him, then two stivers a minute while we’re linked. And a noble on account of he’s in the Spike. Acceptable?” Derkhan nodded. It was expensive, but this kind of thaumaturgy was not just a question of learning a few passes. With enough training, anyone could effect the odd fumbling hex, but this kind of psychic channelling took a prodigious birth-talent and years of arduous study. Appearances and surroundings notwithstanding, Umma Balsum was no less a thaumaturgic expert than a senior Remaker or chimerist. Derkhan fumbled for her purse. “Pay after. We’ll see if we get through first.” Umma Balsum rolled up her left sleeve. Her flesh dimpled and wobbled loosely. “Draw me that tattoo. Make it as like the original as you can.” She nodded, indicating Derkhan to a stool in the corner of the room on which rested a palette with a collection of brushes and coloured inks.

Derkhan brought the materials over. She began to sketch onto Umma Balsum’s arm. She cast her mind back desperately, trying to get the colours exactly right. It took her about twenty-five minutes to finish her attempt. The anchor she had drawn was a little more garish than Benjamin’s (partly a consequence of the quality of the inks), and perhaps somewhat squatter. Nonetheless, she was sure that anyone who knew the original would recognize hers as a copy of it. She sat back, tentatively satisfied.

Umma Balsum waved her arm like a fat chicken’s wing, drying the inks. She fiddled with the remnants of Benjamin’s bedroom.

“. . . bloody unhygenic bloody way to make a living . . .” she murmured, just loud enough for Derkhan to hear. Umma Balsum picked up Benjamin’s razor and, holding it with a practised grip, nicked herself slightly on the chin. She rubbed the bloodstained paper against her cut. Then she lifted up her skirt and pulled the trouser leg as far onto her fat thighs as it would go.

Umma Balsum reached under the table and brought out a leather and darkwood box. She set it on the table and opened it.

Inside was a tight, interlocking tangle of valves and tubes and wires, looping over and under each other in an incredibly dense engine. At its top was a ridiculous-looking brass helmet, with a kind of trumpet attachment jutting from the front. The helmet was tethered to the box by a long coiled wire.

Umma Balsum reached out and extracted the helmet. She hesitated, then placed it on her head. She fastened the leather straps. From some hidden place inside the box she pulled out a large handle, which slotted neatly into a hexagonal hole at the side of the boxed engine. Umma Balsum placed the box at the edge of the table nearest Derkhan. She attached the engine to a chymical battery.