As to the cause of it I could not even form a conjecture.

Gradually my eyes became accustomed to the darkness, and I could dimly perceive white figures flitting about the room.

At the same time I felt something standing near me, and close to my shoulder I saw a pair of eyes and long streaming hair.

On my other side, equally close, was something very like a woman's night-cap.

Though by no means of a nervous temperament, I felt uncomfortable.