=Lymphangitis.=--No such invasion of mucous membrane by septic organisms can take place without active participation of the lymphatics in the region involved. In cases of gonorrheal or even non-gonorrheal urethritis, not merely enlargement of the lymph nodes in the groin may occur, but an active lymphangitis, manifested as a tender, sensitive cord beneath the skin, especially along the dorsum of the penis. The lymph nodes thus become involved and sometimes suppurate, and these abscesses are referred to as _suppurating gonorrheal buboes_. The suppurative feature is probably caused by contamination with the ordinary pyogenic organisms. =The Testicles.=--Gonorrheal infection seems often to extend along the vas and thus invades the epididymis, where evidences of activity are more frequent than in the vas itself. _Epididymitis_ complicates cases of clap usually after the second week. It is characterized by pain, tenderness, and swelling of the epididymis, which occupies the same position relative to the testis proper that the heel does to the rest of the foot when a person stands in the ordinary military position, _i. e._, to the rear and inner side. The swelling becomes pronounced, and it is not unusual for a certain degree of swelling to be manifested in the testis proper, with the accumulation of a small amount of fluid in the sac of the tunica vaginalis, thus constituting a mild degree of acute hydrocele. While the inflammation is confined to the epididymis the pain is not intense, but of a dull, heavy character; but when the testis proper is involved there is a true _orchitis_, the inflammation being confined within the inelastic sclerotic tunic, and the pain then may be severe. Considerable fever accompanies many of these cases, with occasionally some edema of the scrotum and congestion of the testicular coverings. The weight of such a “swelled testicle,” as this condition is called by the laity, is irksome, and occasionally causes extreme discomfort. Under these circumstances physiological rest, _i. e._, in bed, and the use of a suitable suspensory apparatus are essential. While resolution of this swelling ordinarily begins early and proceeds satisfactorily, the latter portion of the process is often slow and tedious, and the epididymis thus once involved will for months contain nodules and irregularities of contour. Usually the affection is limited to one side; but both testicles may be involved. If the infection be violent and the treatment inefficient abscesses may result.