“Yes, sir,” Lloyd said, nodding. “And may I bring my notebook?”

“You may. Buy you must not leave pencil shavings or do anything untidy,” Schelling replied-a remark that struck Lloyd as amusing, given the thick fur of dust that haunted the shop.

“And to resolve any unpleasant curiosity you may have, the hump on my back is a benign growth that is too close to my spine to be removed. No surgeon has the skill to remove it without endangering my life. So you need not stifle any impertinent questions on that score. Now follow me, and do not return except at the times I have indicated. Oh, and do consider bathing. You reek of fried catfish and the honey bucket.”

Lloyd flinched at this remark but picked himself up off the floor and followed the bookseller down the long hallway to the back door. Outside was an alleyway jammed with crates and excelsior, but he knew the way back to the stable and sprinted down the jagged cobblestones, leaving the humpbacked man watching him from the doorway. Once the boy was gone, Schelling returned to the room he had been reading in and took a mental inventory. The bookseller noticed that a treatise on the Greek Archytas of Tarentum’s mechanical pigeon, the first model airplane, was missing. Then, on the back of an old newspaper advertising a slave auction, he spotted something that made his bespectacled eyes bug out. Using but a hardened clump of street mud, the boy had managed to scrawl a rather fine imitation of one of Hooke’s microscopic drawings.

“I wonder…” Schelling murmured.

CHAPTER 7. Wild Science

THE SITTURDS’ MORALE COLLAPSED IN ST. LOUIS. THEIR WORLD always seemed to be ending. Rapture felt degraded and confused by the “w’ich en w’y talk” of the metropolis. She had lost her ability for “sperit voicen” and seemed fatigued at heart. Hephaestus teetered into the gutter. Where up to this point the trials of travel had brought them together in their quest to reach Texas and learn the secret of the “salvation” letter, now all the distractions and pressures of the city and their changing roles seemed to bring them undone. Each in a private way was homesick for their old life, as much as that had seemed a burden in the past. Each felt somehow to blame, especially Hephaestus.