_Wedding._—The wedding-day should be selected to take place about ten to fifteen days after the end of the menstruation. It is most desirable that the first sexual relations should be fruitless. Hence the wedding should be selected during the period when conception is least likely to occur. The time immediately before the period, and still more, immediately after following it is the most favorable to conception. In the first place, ovulation and menstruation are generally synchronous. Then during the intermenstrual period the plug of the clear viscid mucus which is secreted by the cervical glands blocks up the passage and interferes with the entrance of the spermatozoa into the uterine cavity, unless removed by female ejaculation which does not always occur at the right moment. This obstruction is washed away each month by the menstrual discharge. Impregnation is, therefore, most likely just after the menstrual epoch, while the middle of the intermenstrual period is the time of comparative sterility. The next important question is the selection of the room and bed for the married couple. In the aristocratic European families husband and wife occupy different bed-rooms. Throughout Germany, even among the poorer classes, husband and wife, although occupying the same room, have at least different beds. Here in our country it is the custom, even among the well-to-do, to sleep in one bed. This unhappy custom, apart from its unaesthetic aspect at the time of menstruation, leads easily to excesses, and many a young couple has ruined its life by excessive sexual indulgence. There should be chastity even in the marriage relations. It is hence to the best interest of husband and wife that they should at least occupy separate beds, if the circumstances do not allow the luxury of separate bed-rooms. The most refreshing sleep can only be attained by occupying the bed alone. _Concarnationis posituræ._—Complexus venerei positurae numero sex sunt aliis temporibus apud alias gentes usitatæ. Vir supra, vir infra, stando, sedendo, a latere and praepostero (more bestiarum). Normalis atque naturalis mulieri positura est resupina, viro inter femora mulieris extensa et abducta jacente. “Qua facie praesignis erit resupino jaceto,” sings Ovid in his Ars Amandi. In this position the vagina et virile mentulatum easdem directiones habent, et frictiones inter glandes clitoridis penisque, which are the most sensitive organs for inducing libido, are facilitated. The supine position is hence mechanically the most favorable for the frictions of the most sensitive parts.