For six long days, since my work was done, my mind has been a whirlpool, swift, unprogressive and incessant, a torrent of thoughts leading nowhere, spinning round swift and steady--" He paused.

"Towards the gulf." "You must sleep," said Isbister decisively, and with an air of a remedy discovered.

"Certainly you must sleep." "My mind is perfectly lucid.

It was never clearer.

But I know I am drawing towards the vortex.