Then he opened the big door and I was surprised to observe that it led into the outer air. What gulf of darkness are we about to plunge into? I asked myself, peering through the doorway; and as we stepped out I heard again that ominous whirring. Close upon his heels I followed in a narrow path, through what seemed to be a large courtyard, overgrown with thick grass. Presently he stopped, and, taking a bunch of keys from his pocket, unlocked a door in a back wing of the house. Reaching out until his hand touched me, as if to make sure that I was there, he swung the door open and we stepped into a dimly lighted apartment.

My mysterious guide turned up the wick of a lamp that was burning on a table in the centre of the room. It was a library, with great shelves of books reaching from floor to ceiling along its walls. A large galvanic battery, globes, charts and other contrivances that belong to the equipment of a scholar surrounded the table. This table was used for writing evidently, for there were pens lying on it and a human skull used as an inkstand, the fluid being held in the cavities of the eyes. I had seated myself in a chair and was waiting for some sign from the little old man who had brought me there. But where was he? Turning around I looked about me on all sides.