He insisted on holding seances in the cabin, at which the usual phenomena occurred.

The table twisted about, voices were heard and Jacobsen's accordion wailed out tunes above our heads.

These happenings drove Bickley to a kind of madness, for here were events which he could not explain.

He was convinced that someone was playing tricks upon him, and devised the most elaborate snares to detect the rogue, entirely without result.
First he accused Jacobsen, who was very indignant, and then me, who laughed.

In the end Jacobsen and I left the "circle" and the cabin, which was locked behind us; only Bastin and Bickley remaining there in the dark.