Mr. Pecksniff fell on his doorsteps, and got some cranial contusions. These were dressed with vinegar and brown paper.
Remember the nursery rhyme, Jack and Jill second verse:
Jack fell down, and broke his crown....and home did trot..
as fast as he could caper...went to bed to mend his head..
with vinegar and brown paper.
Actually considering limited choices at the time, it was a good one. The vinegar is antiseptic, and paper would prevent contamination of wound. I suppose they made some kind of bandage with cloth, which would have been potentially germ-laden and undesirable in contact with the wound, to which it would adhere, and hurt when removed. More sensible than most of the home remedies of the time.