bladder are much thickened.

[Illustration]
Plate 62.--Figure 1.

Fig. 2, Plate 62.--The three lobes, a, d, c, of the prostate are
enlarged and of equal size, moulded against each other in such a way
that the prostatic canal and vesical orifice appear as mere clefts
between them. The three lobes are encrusted on their vesical surfaces
with a thick calcareous deposit. The surface of the third lobe, a, which
has been half denuded of the calcareous crust, b, in order to show its
real character, appeared at first to be a stone impacted in the neck of
the bladder, and of such a nature it certainly would seem to the touch,
on striking it with the point of a sound or other instrument.

[Illustration]
Plate 62.--Figure 2, 3.

Fig. 3, Plate 62, represents the prostate with its three lobes enlarged,
and the prostatic canal and vesical orifice narrowed. The walls of the
bladder are thickened, fasciculated, and sacculated; the two former
appearances being caused by a hypertrophy of the vesical fibres, while
the latter is in general owing to a protrusion of the mucous membrane
between the fasciculi.

Fig. 4, Plate 62.--The prostate presents four lobes, a, b, c, d, each
being of large size, and projecting far into the interior of the
bladder, from around the vesical orifice which they obstruct. The
bladder is thickened, and the prostatic canal is elongated. The urethra
and the lobes of the prostate have been perforated by instruments,
passed for the retention of urine which existed. A stricturing band, e,
is seen to cross the membranous part of the canal.

[Illustration]
Plate 62.--Figure 4, 5.

Fig. 5, Plate 62.--The prostate, a a, is greatly enlarged, and projects
high in the bladder, the walls of the latter, b b, being very much
thickened. The ureters, c, are dilated, and perforations made by
instruments are seen in the prostate. The prostatic canal being directed
almost vertically, and the neck of the bladder being raised nearly as
high as the upper border of the pubic symphysis, it must appear that if
a stone rest in the bas fond of the bladder, a sound or staff cannot
reach the stone, unless by perforating the prostate; and if, while the
staff occupies this position, lithotomy be performed, the incisions will
not be required to be made of a greater depth than if the prostate were
of its ordinary proportions. On the contrary, if the staff happen to
have surmounted the prostate, the incision, in order to div