.--In this figure is represented a small calculus
impacted in and dilating the membranous part of the urethra.

[Illustration]
Plate 58.--Figure 5.

Fig. 6, Plate 58.--Two strictures are here shown to exist in the
urethra, one of which is situated immediately in front of the bulb, and
the other at a point midway between the bulb and the meatus.

[Illustration]
Plate 58.--Figure 6.

Fig. 7, Plate 58.--A stricture is here shown situated at the bulb.

[Illustration]
Plate 58.--Figure 7.

Fig. 8, Plate 58, represents a stricture of the canal in front of the bulb.

[Illustration]
Plate 58.--Figure 8.

Fig. 9, Plate 58, represents the form of an old callous stricture half
an inch long, situated midway between the bulb and the meatus. This is
perhaps the most common site in which a stricture of this kind is found
to exist. In some instances of old neglected cases the corpus spongiosum
appears converted into a thick gristly cartilaginous mass, several
inches in extent, the passage here being very much contracted, and
chiefly so at the middle of the stricture. When it becomes impossible to
dilate or pass the canal of such a stricture by the ordinary means, it
is recommended to divide the part by the lancetted stilette. (Stafford.)
Division of the stricture, by any means, is no doubt the readiest and
most effectual measure that can be adopted, provided we know clearly
that the cutting instrument engages fairly the part to be divided. But
this is a knowledge less likely to be attained if the stricture be
situated behind than in front of the triangular ligament.

[Illustration]
Plate 58.--Figure 9.

Fig. 10, Plate 58, exhibits a lateral view of the muscular parts which
surround the membranous portion of the urethra and the prostate; a, the
membranous urethra embraced by the compressor urethrae muscle; b, the
levator prostatae muscle; c, the prostate; d, the anterior ligament of
the bladder.

[Illustration]
Plate 58.--Figure 10.

Fig. 11, Plate 58.--A posterior view of the parts seen in Fig. 10; a,
the urethra divided in front of the prostate; b b, the levator prostatae
muscle; c c, the compressor urethrae; d d, parts of the obturator
muscles; e e, the anterior fibres of the levator ani muscle; f g, the
triangular ligament enclosing between its layers the artery of the bulb,
Cowper's glands, the membranous urethra, and the muscular parts
surrounding this portion of the canal. The fact that