Curiosity — that great and terrible engine of our own undoing — overcame my waning caution. I found myself consenting, with an irrational eagerness, to return with her to the North. I left my reputation and, I fear, a portion of my reason behind in the Glasgow fog.
     August 16th — Glasgow to Oban — We departed that wretched tavern at once — to my profound and considerable relief — and made all haste through the gas‑lit labyrinth of the Glasgow docks toward the soot‑stained maw of Queen Street Station. The train departed two after midnight exactly. The subsequent transit from Glasgow to Oban proved a gruelling penance of smoke and vibration. The carriage was a sweltering, claustrophobic box of compressed humanity. The air existed as a grey suspension of pulverised coal. It clung with a greasy persistence to garments, skin, and even the surface of the eye. Every breath I drew carried the gritty, particulate bitterness of the furnace.
     “Professor.” I muttered, leaning toward her as the carriage lurched with a violent shudder through the devouring darkness of the moors, “This compartment is stifling. The air is more soot than oxygen. How can you bear it?”
     “Bear it, Doctor?” she replied. In the fitful light of the overhead oil‑lamp, her eyes seemed to catch a metallic glint — a reflection of the brass fittings, perhaps, or something more deep‑seated. “It is the perfume of progress. You fret over a lack of comfort while we stand on the very precipice of rewriting human history.”
     I could not discern whether she spoke in a spirit of macabre jest or with a chilling earnestness; the deafening, mechanical din of the locomotive — the relentless clickety‑clack‑clickety‑clack of iron on steel — swallowed any nuance in her tone. The window panes rattled as the moorland darkness pressed against the glass with a suffocating intimacy. It struck me then, with a cold pang of realisation, that to Gerehardt, the world of modern men — with their petty comforts, their industrial soot and their very biological breathing — was becoming increasingly inconsequential. She was already inhabiting that ante-diluvian tomb while I remained shackled to the mortal world by fear, doubt, and the fragile architecture of reason.
     Fatigue began to press heavily upon me, a pulsative weight behind the orbits of my eyes, yet sleep remained a physical impossibility. The violent, lateral jolting of the carriage springs rattled through the very marrow. The ceaseless cadence of the rails — clickety-clack, clickety-clack — adopted a dreadful synchrony with the warning that had plagued me since the arrival of that yellow telegram. Curiosity killed the cat. The refrain repeated itself with mechanical insistence, until I could no longer distinguish whether the words originated within my own thoughts or from the iron engine that carried us north. I was a man trapped in a steel cylinder, being hurtled toward a destination my reason rejected, but which my soul already recognised.
     We halted at Stirling, and again at Crianlarich, but these brief pauses offered no true respite; they were merely moments of gasping silence before the steam hissed in a violent exhalation and the iron beast lunged forward once more.
     The air grew no clearer, and my retinas burned with a weariness that bordered on acute physical pain, yet my mind was refused the sanctuary of sleep. My nerves were pulled as taut as the piano wire. The sensation was not merely mental but corporeal: a tremulous hum threading through my bones, aligning itself with the rhythm of the rails. I was no longer a passenger on a Highland railway; I was a conduit, being tuned to a pitch that human anatomy was never meant to sustain.
     Gerehardt, by contrast, sat perfectly upright, her posture entirely unaffected by the long hours of jarring motion. The billowing smoke, the deafening mechanical roar, the stifling crush of perspiring bodies — none of it appeared to touch the hem of her garments. She seemed insulated from the indignities of the age, as though the grime and turbulence of the industrial world simply refused to acknowledge her existence. I could not discern whether this was a feat of extraordinary fortitude or the habitual stillness of a mind already miles ahead of us.
     She kept her gaze fixed upon the soot stained glass of the window, as though the journey itself were a negligible interval between the necessities of her work. The flickering oil‑lamp cast her profile in alternating bands of gold and shadow, giving her the aspect of a statue carved from some unyielding mineral. I found myself envying her composure, even as it terrified me; for what manner of woman remains unmoved by the chaotic turbulence of the present when she is carrying a piece of a world extinguished before the dawn of time? She sat like a custodian of forgotten epochs, while I — trembling, soot‑choked, and mortal — felt myself shrinking into the narrow confines of my own humanity.
     August 17th — Oban to Caisteal Inbhir Lòchaidh — After thirty‑six hours of unrelenting transit, we finally reached the terminus of the Callander and Oban Railway. The coastal chill, sharpened to a razor’s edge by the Atlantic wind, was a stark and violent contrast to the stifling carriage. As I descended, my lower limbs were perforce ready to collapse; they no longer felt a part of me. The platform swayed beneath me like the deck of a ship, though the earth itself remained steady.
     Gerehardt, however, proceeded with a pace that did not falter. Her silhouette cut through the fine sea‑mist and drizzle with the sharpness of a scalpel. I began to suspect — with a growing, superstitious dread — that her vitality was being sustained by something other than mere physical constitution. She moved with singular momentum, driven by a logic that utterly ignored the biological. The mist parted around her as though unwilling to impede her passage. Exhaustion and superstition tempted me toward absurd conclusions.
The quay emerged slowly from within that grey, suffocating veil of the afternoon. A steamer lay moored there, rising and falling with a heavy lethargy as the wind whipped up the black waters of the loch. Its dark hull loomed out of the vapour with a grim, funereal aspect — a stark silhouette that put me instantly in mind of Charon’s ferry. I felt as though we were not embarking upon a vessel, but crossing a threshold from which no rational man could hope to return unchanged.
     We soon reached the Atlantic itself, and as if my physical and psychological suffering did not already suffice, the sailing proved brutal.