propelled along the urethra, in combination with the prostatic fluid which is equally essential, and finally ejected with a certain amount of force from the urethral orifice.  Under the influence of the stimulation furnished by the contact and friction of the vagina, this process is effectively carried out, mainly by the rhythmic contractions of the bulbo-cavernosus muscle, and the semen is emitted in a jet which may be ejaculated to a distance varying from a few centimeters to a meter or more.

    With regard to the details of the psychic sides of this process a
    correspondent, a psychologist, writes as follows:—­

“I have never noticed in my reading any attempt to analyze the sensations which accompany the orgasm, and, as I have made a good many attempts to make such an analysis myself, I will append the results on the chance that they may be of some value.  I have checked my results so far as possible by comparing them with the experience of such of my friends as had coitus frequently and were willing to tell me as much as they could of the psychology of the process.

“The first fact that I hit upon was the importance of pressure.  As one of my informants picturesquely phrases it—­’the tighter the fit the greater the pleasure.’  This agrees, too, with their unanimous testimony that the pleasurable sensations were much greater when the orgasm occurred simultaneously in the man and woman.  Their analysis seldom went further than this, but a few remarked that the distinctive sensations accompanying the orgasm seem to begin near the root of the penis or in the testes, and that they are qualitatively different from the tickling sensations which precede them.

“These tickling sensations are caused, I think, by the friction of the glands against the vaginal walls, and are supplemented by other sensations from the urethra, whose nerves are stimulated by pressure of the vaginal walls and sphincter.  The specific sensation of the orgasm begins, I believe, with a strong contraction of the muscles of the urethral walls along the entire length of the canal, and is felt as a peculiar ache starting from the base of the penis and quickly becoming diffused through the whole organ.  This sensation reaches its climax with the expulsion of the semen into the urethra and the consequent feeling of distention, which is instantly followed by the rhythmic peristaltic contractions of the urethral muscles which mark the climax of the orgasm.

“The most careful introspection possible under the circumstances seems to show that these sensations arise almost wholly from the urethra and in a far less degree from the corona.  During periods of great sexual excitement the nerves of the urethra and corona seem to possess a peculiar sensitivity and are powerfully stimulated by the violent peristaltic contractions of the muscles in the urethral walls during ejaculation.