against marriage, we must, that is to say, advise the postponement of marriage, if the bride is suffering from severe hysterical or neurasthenic states. Where, further, such neurasthenic or hysterical troubles occur in a woman with pronounced hereditary predisposition to nervous disease, we must, both for the sake of the possible progeny and on account of the uncertain influence of married life on the health of the patient, absolutely and unconditionally prohibit marriage. In cases also in which severe hereditary predisposition to mental disorder exists (especially when derived from both parents), and in addition stigmata of psychopathic degeneration are actually apparent in the patient, or she has already suffered from the development of a psychosis, we must decisively object to the patient’s marriage.” As regards the marriage of young women suffering from tuberculosis, we must take into consideration a fact that medical experience has conclusively established, namely, that the processes of generation have an unfavorable influence upon pulmonary phthisis. Girls with an inherited predisposition to tubercular disease, sometimes first manifest the symptoms of pulmonary tuberculosis at the time of the menarche. In cases of developed tuberculosis, copulation and the excitement of the vascular system associated therewith have a more or less unfavorable influence—and all the more inasmuch as, in accordance with the saying _omnis phthisicus salax_, women affected with tuberculosis often exhibit a very lively sexual impulse, an almost insatiable sexual appetite. Sexual excesses are, moreover, very likely to lead to the occurrence of hæmoptysis. In former days it was believed that conception and pregnancy, when occurring in women suffering from tuberculosis, had a restraining influence on the progress of the pulmonary disease, a view which found expression in the assertion of _Baumes_ and _Rosières de la Chassagne_ that of two women affected with tuberculosis to the same degree of severity, one who became pregnant would always outlive the other who failed to become so. Careful and sufficient observations on the part of physicians and gynecologists have, however, shown that this view was fallacious, and, on the contrary, that during pregnancy tuberculosis advances with more rapid strides, that pregnancy, and lying-in accelerate the fatal event (_Grisolle_, _Lebert_), that tuberculosis acquired shortly before pregnancy or in the course of that condition, progresses with exceptional rapidity (_Larcher_), and that the lying-in period is especially perilous to these patients (_A. Hanau_). In some cases of consumption it is the first pregnancy that is the most perilous, but in other cases a later pregnancy proves more destructive.