[Illustration]
Plate 61.--Figure 1.

Fig. 2, Plate 61.--The prostate, a b, is here seen to be somewhat more
enlarged than is natural. A tubercle, b, surmounts the lower part, c, of
the prostate, and blocks up the vesical orifice. Catheters introduced by
the urethra for retention of urine which existed in this case, have had
their points arrested at the bulb, and on being pushed forwards in this
direction, have dilated the bulb into the form of a pouch, seen at d.
The sinus of the bulb, being the lowest part of the urethral canal, is
very liable to be distorted or perforated by the points of instruments
descending upon it from above and before. [Footnote]

[Footnote: When a stricture exists immediately behind the bulb, this
circumstance will, of course, favour the occurrence of the accident.
"False passages (observes Mr. Benjamin Phillips) are less frequent here
(in the membranous part of the urethra) than in the bulbous portion of
the canal. The reason of this must be immediately evident: false
passages are ordinarily made in consequence of the difficulty
experienced in the endeavour to pass an instrument through the
strictured portion of the tube. Stricture is most frequently seated at
the point of junction between the bulbous and membranous portions of the
canal; consequently, the false passage will be usually anterior to this
latter point."--(On the Urethra, its Diseases. &c., p. 15.) ]

[Illustration]
Plate 61.--Figure 2

Fig. 3, Plate 61.--A cyst, c, is seen to grow from the left side of the
base of the prostate, a b, and to form an obstruction at the vesical
orifice.

[Illustration]
Plate 61.--Figure 3.

Fig. 4, Plate 61.--A globular excrescence, a, appears blocking up the
vesical orifice, and giving to this the appearance of a crescentic slit,
corresponding to the shape of the obstructing body. The prostate, b b,
is enlarged in both its lateral lobes. A small bougie, c, is placed in
the prostatic canal and vesical opening.

[Illustration]
Plate 61.--Figure 4

Fig. 5, Plate 61.--The prostate, d, is considerably enlarged, and the
vesical orifice is girt by a prominent ring, b b, from the right border
of which the nipple-shaped body, a, projects and occupies the outlet.
Owing to the retention of urine caused by this state of the prostate,
the ureters, c c, have become very much dilated.

[Illustration]
Plate 61.--Figure 5.

Fig. 6, Plate 61.--The lateral lobes of the prostate,