After the testicles the prostatic gland must be examined. As direct examination of this gland is only possible by a painful examination through the rectum, we shall have to inquire into the condition of the functions of this gland. We must find out whether there is a flow of prostatic liquid and semen (frequency of pollution). It must be remembered, however, that the flow of a little semen in constipation and sexual abstinence has no importance. We must specially inquire about previous attacks of gonorrhœa. Examining the urine in two fractions, we must ascertain whether the first fraction is as clear as the second. The presence of a few filaments tells a tale of previous gonorrhœa, but is of no consequence for the prognosis. It may be, however, that they possibly indicate the presence of gonococci in the deeper lying glands of the urethra which, after sexual excesses, can again come to the surface even after years. Inquiring for gonorrhœa in the past, we must find out whether the patient was treated by local applications with instruments to the posterior part of the urethra, this being the only radical treatment of chronic gonorrhœa. As a rule, every chronic gonorrhœa invades the posterior part of the urethra and, usually, inflammation of the posterior part of the urethra involves also the prostatic gland. The presence of strictures and hypertrophy of the prostate, unless they occur in connection with a gonorrhœa, are indicative of a faulty activity of those glands which influence the formation of fatty or connective tissue in the body, as will be shown. It may indicate changes in the thyroid, after extirpation or degeneration of which the connective tissue in the body is increased, to which fact is also largely due the occurrence of prostatic hypertrophy. We must inquire as to the passage of urine. An interrupted stream with pain on micturition may indicate, in elderly persons, a hypertrophy of the prostate, especially if these pains are more frequent in cold weather. The bladder must be examined for the presence of stone. The presence of stone, as also of long-standing gleet and strictures that are not cured, lessen the chances of a long life, the dangers of cystitis, and ascending pyelonephritis, and nephritis, hanging, as the sword of Damocles, over the heads of their unfortunate possessors. Gonorrhœa, if it occurs frequently and attacks the prostate, is a great danger both to the mental stability and sexual powers. The presence of great sexual desires, with more or less impotence, must also be taken into consideration when we are collecting evidence to find out the chances of long life in an individual.