(Chapters 20-31) What are the details and atmosphere of Jaggers' office?

From the text:

Mr. Jaggers's room was lighted by a skylight only, and was a most dismal place; the skylight, eccentrically pitched like a broken head, and the distorted adjoining houses looking as if they had twisted themselves to peep down at me through it. There were not so many papers about, as I should have expected to see; and there were some odd objects about, that I should not have expected to see,—such as an old rusty pistol, a sword in a scabbard, several strange-looking boxes and packages, and two dreadful casts on a shelf, of faces peculiarly swollen, and twitchy about the nose. Mr. Jaggers's own high-backed chair was of deadly black horsehair, with rows of brass nails round it, like a coffin; and I fancied I could see how he leaned back in it, and bit his forefinger at the clients. The room was but small, and the clients seemed to have had a habit of backing up against the wall; the wall, especially opposite to Mr. Jaggers's chair, being greasy with shoulders. I recalled, too, that the one-eyed gentleman had shuffled forth against the wall when I was the innocent cause of his being turned out.
I sat down in the cliental chair placed over against Mr. Jaggers's chair, and became fascinated by the dismal atmosphere of the place.