Outside of this door was still a solid one, which had been thrown wide open in the morning for the purpose of admitting the air.

In this door Jim discovered a key, which he quietly placed in his pocket, and which he judged, by its size, was fitted to the lock of the inner as well as the outer door.

He had already discovered that the door by which he entered the building was bolted upon the outside, the keeper doubtless supposing that no one would wish to enter so foul a place, and trusting thus to keep the inmates in durance.
"Well, Doctor," said Jim, "this sort o' thing is too many for me.

I gi'en it up.

It's very interestin', I s'pose, but my head begins to spin, an' it seems to me it's gettin' out of order.