EXPLANATION OF PLATE III.

The bladder, prostate, and a part of the urethra drawn while fresh from a subject who died with abscess of the prostate. The case is reported at full length, p. 208.

The sac formed a cavity capable of containing ten or twelve drachms of fluid. It undermined the mucous membrane of the urethra, opening into the canal by an aperture the size of a florin, situated in the upper part; thus the floor of the urethra alone remained, forming a kind of bridge through the cavity, which extended below, above, and on either side of it. This cavity is bounded by the capsule of the prostate, nearly all the substance of the organ having disappeared. Passing through the cavity is the right ejaculatory duct, found to be dissected out entire.