Uncommon thoughts kept beating on my brain like tiny hammers, soft yet persistent, seeking admission; their unbidden tide began to wash along the far fringes of my mind, the currents of unwonted sensations to rise over the remote frontiers of my consciousness. I was aware of thoughts, and the fantasies of thoughts, that I never knew before existed. Portions of my being stirred that had never stirred before, and things ancient and inexplicable rose to the surface and beckoned me to follow. I felt as though I were about to fly off, at some immense tangent, into an outer space hitherto unknown even in dreams. And so singular was the result produced upon me that I was uncommonly glad to anchor my mind, as well as my eyes, upon the masterful personality of the doctor at my side, for there, I realised, I could draw always upon the forces of sanity and safety.

With a vigorous effort of will I returned to the scene before me, and tried to focus my attention, with steadier thoughts, upon the table, and upon the silent figures seated round it. And then I saw that certain changes had come about in the place where we sat.