The analyses of a text #3

The narrator recalls his adolescence.
He visited his old friend Traddles' place for the first time.

..............................
It was his only room, I saw; for there was a sofa-bedstead in it, and his blacking-brushes and blacking were among his books - on the top shelf, behind a dictionary. His table was covered with papers, and he was hard at work in an old coat. I looked at nothing, that I know of, but I saw everything, even to the prospect of a church upon his china inkstand, as I sat down - and this, too, was a faculty confirmed in me in the old Micawber times. Various ingenious arrangements he had made, for the disguise of his chest of drawers, and the accommodation of his boots, his shaving-glass, and so forth, particularly impressed themselves upon me, as evidences of the same Traddles who used to make models of elephants' dens in writing-paper to put flies in; and to comfort himself under ill usage, with the memorable works of art I have so often mentioned.
[David Copperfield by Charles Dickens]
1. I'd like to know what "confirmed in me" means.
2. I'd like to know what "the disguise of his chest of drawers" means.
3. And I'd like to know why it is "in," not "with."