I never found any books of my father’s, but I did not regret the long climbs to the top of the dome. If David had come with me, we raced up together, up and down the sloping floor—or peered over the rail at Mr Million’s slow progress while we debated the feasibility of putting an end to him with one cast of some ponderous work. If David preferred to pursue interests of his own farther down I ascended to the very top where the cap of the dome curved right over my head; and there, from a rusted iron catwalk not much wider than one of the shelves I had been climbing (and I suspect not nearly so strong), opened in turn each of a circle of tiny piercings—piercings in a wall of iron, but so shallow a wall that when I had slid the corroded cover plates out of the way I could thrust my head through and feel myself truly outside, with the wind and the circling birds and the lime-spotted expanse of the dome curving away beneath me.

To the west, since it was taller than the surrounding houses and marked by the orange trees on the roof, I could make out our house. To the south, the masts of the ships in the harbor, and in clear weather—if it was the right time of day—the whitecaps of the tidal race Sainte Anne drew between the peninsulas called First Finger and Thumb. (And once, as I very well recall, while looking south I saw the great geyser of sunlit water when a star-crosser splashed down.) To east and north spread the city proper, the citadel and the grand market and the forests and mountains beyond.

But sooner or later, whether David had accompanied me or gone off on his own, Mr Million summoned us.