In the early stage of seminal incontinence, when the nocturnal pollutions overstep the natural limits, the ejaculated fluid is unchanged. When, however, the pollutions are more frequent and diurnal discharges coexist, the semen is watery and scanty; the spermatozoids are smaller, comparatively few in number, and their movements are liable to be abolished in less than an hour, while spermatic crystals form more rapidly and more abundantly than in health. In the worst cases, or those characterized by diurnal and nocturnal pollutions and by the presence of semen in the urine, the spermatozoids are either entirely absent, or, if they are present, they are motionless, stunted, or variously deformed. In these advanced cases the ejaculated fluid, which consists principally of the secretions of the seminal vesicles and the prostate, frequently undergoes fatty {140} degeneration, as indicated by granular epithelium, by molecular detritus, and even by oil-globules in the protoplasm of the altered zoosperms. The entire absence of spermatozoids, constituting the condition known as azoospermatorrhoea, is of infrequent occurrence. An examination of the genital organs discloses elongation of the prepuce in nearly one-fourth of all cases; a rigid and pointed penis in one-tenth; relaxation of the scrotum in about one-eighth; irritable testes in 1 example out of every 25; varicocele in 1 case out of every 50; coldness of the genitalia in 1 case out of every 17; a feeling of heat in 1 case out of every 33; and irritability of the bladder in 1 case out of every 25. It will, moreover, be found that seminal incontinence is complicated by feebleness of erection, with precipitate ejaculation on coition, in 22 per cent. of all cases; by the occurrence of ejaculation on attempting intercourse, before penetration, simultaneously with erection, or even before erection, in 16 per cent.; and with total impotence in 5 per cent. of all cases. Prostatorrhoea is also a not infrequent complication, while urethral strictures and hyperæsthesia are nearly always present. ETIOLOGY AND PATHOGENY.--Seminal incontinence is not a separate entity, but one of many symptoms of general or local disorders, or of both combined. In the majority of instances it must be looked upon as a neurosis, diurnal and nocturnal pollutions representing a motor neurosis with spasm of the seminal vesicles, and spermorrhagia indicating a motor neurosis with dilatation and paresis of the orifices of the ejaculatory ducts. In all of the varieties there is increased susceptibility of the cerebral and spinal genital centres to factors which in healthy persons are not productive of ill effects.