A similar procedure has been employed with success by Kehrer, in a case of enfeebled potency on the part of the male, leading to premature ejaculation. A speculum was introduced into the vagina, and through this instrument the semen, ejaculated in consequence of sexual excitement, was introduced into the vaginal fornix; conception ensued. In an analogous manner, _A. Peyer_ recommended, in a case of partial impotence, in which special manipulations were needed to bring about ejaculation, that conception should be favoured in the following manner: Erection having been effected by ordinary sexual contact, the manipulations needed to produce ejaculation were carried out, and the penis was intromitted into the vagina the moment before ejaculation occurred. This has been done with fruitful results. _Englisch_ reports the case of a hypospadiac who, in order to render coitus effective, used a condom in the anterior extremity of which he made an aperture. In this way he became the father of three children. In very obese men with extremely protuberant abdomens, we may recommend for the furtherance of conception that they should have intercourse with their wives _a parte posteriori_; and the same recommendation may be made in cases in which the wife herself is extremely obese. In Australia, it is said that among the indigens, coitus is usually practiced _a posteriori_; and there is a saying in the Talmud to the effect that sexual intercourse performed in the ordinary manner does not lead to the conception of infants so good, wise, talented, and promising as those whose conception is the result of coitus _a posteriori_. Mohammed, on the other hand, declares, “Your wives are your tillage, go therefore unto it in whatsoever manner ye will.” In cases of retroflexion of the uterus, with a markedly forward direction of the vaginal portion of the cervix, I have recommended to the husband that he should perform coitus with his wife in the upright sitting posture. In this posture the fundus uteri passes downwards and forwards, whilst the vaginal portion of the cervix passes upwards and backwards. In cases of retroversion of the uterus with the formation of a cul-de-sac in the posterior vaginal fornix, _Pajot_ recommends, with the aim of temporarily restoring the uterus to a position in which the occurrence of conception is favored, that for three or four days prior to coitus the patient should retain the fæces, eating the while freely of eggs and rice, and taking a small opium pill every evening; in cases of anteversion, the patient should retain her urine for a considerable time—five or six hours—before coitus; and in cases of lateral version he recommends that the patient should have intercourse while lying on that side towards which the vaginal portion of the cervix is directed.