In short, the facts which prove what it is not, prove what it actually is--namely, a uterus arrested in its development, and as a sign of that all-encompassing law in nature, which science expresses by the term "unity in variety." This interpretation of the prostate, which I believe to be true to nature, will last perhaps till such time as the microscopists shall discover in its "secretion" some species of mannikins, such as may pair with those which they term spermatozoa.] Fig. 1, Plate 61.--The prostate, a b, is here represented thinned in its walls above and below. The lower wall is dilated into a pouch caused by the points of misdirected instruments in catheterism having been rashly forced against it. [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