otnote: Both lobes of the prostate are equally liable to chronic
enlargement. Home believed the left lobe to be oftener increased in size
than the right. Wilson (on the Male Urinary and Genital Organs) mentions
several instances of the enlargement of the right lobe. No reason can be
assigned why one lobe should be more prone to hypertrophy than the
other, even supposing it to be matter of fact, which it is not. But the
observations made by Cruveilhier (Anat. Pathol.), that the lobulated
projections of the prostate always take place internally at its vesical
aspect, is as true as the manner in which he accounts for the fact is
plausible. The dense fibrous envelope of the prostate is sufficient to
repress its irregular growth externally.]

Fig. 11, Plate 61.--Both lobes of the prostate are enlarged, and from
the base of each a mass projects prominently around the vesical orifice,
a b. The prostatic urethra has been moulded to the shape of the
instrument, which was retained in it for a considerable time.

[Illustration]
Plate 61.--Figure 11.

Fig. 12, Plate 61.--The prostate, c b, is enlarged and dilated, like a
sac. Across the neck, a, of the bladder the prostate projects in an
arched form, and is transfixed by the instrument, d. The prostate may
assume this appearance, as well from instruments having been forced
against it, as from an abscess cavity formed in its substance having
received, from time to time, a certain amount of the urine, and retained
this fluid under the pressure of strong efforts, made to void the
bladder while the vesical orifice was closed above.

[Illustration]
Plate 61.--Figure 12.

Fig. 13, Plate 61.--The lateral lobes, d e, of the prostate are
enlarged; and, occupying the position of the third lobe, appear as three
masses, a b c, plicated upon each other, and directed towards the
vesical orifice, which they close like valves. The prostatic urethra
branches upwards into three canals, formed by the relative position of
the parts, e, c, b, a, d, at the neck of the bladder. The ureters are
dilated, in consequence of the regurgitation of the contents of the
bladder during the retention which existed ..

[Illustration]
Plate 61.--Figure 13.

Fig. 1, Plate 62, exhibits the lobes of the prostate greatly increased
in size. The part, a b, girds irregularly, and obstructs the vesical
outlet, while the lateral lobes, c d, encroach upon the space of the
prostatic canal. The walls of the