The physician is frequently consulted in cases where menstruation has occurred once or twice, perhaps at long intervals, and not appearing regularly the fears of friends are excited. This is the normal course of establishment in a large proportion of cases. Time and assurance and regimen are alone needed, provided there is no evidence of deteriorated health. Absence of the function alone does not demand treatment--a fact which should be kept steadily in mind. In a still larger class of cases the amenorrhoea depends upon, and is the direct result of, some pronounced cachectic condition, as chlorosis, scrofula, or a more or less active tubercular disease of the lungs. The treatment of this class resolves itself into that of the disease causing the derangement, and the reader is referred to the articles on the corresponding subjects. The cases requiring more direct consideration therapeutically are those closely allied to the preceding, in which delay in appearance depends upon want of development of the body or general feebleness of constitution, or those in which absence follows and continues unduly after some severe disease. In all these cases the treatment is to be indirect rather than direct. The absent function is to be restored by improving nutrition, by increasing bodily vigor, and by using every means to establish the general health on a firm basis. Measures for this purpose should be addressed to every particular of the habits, occupation, and surroundings of the patient. They do not differ from those of a general tonic course, but in some particulars a special influence may be exerted upon the function at fault. The clothing should be warm, especially about the pelvis and lower extremities, due care of the feet being impressed in proportion to the universal neglect shown by girls and women in regard to these important parts of the person. The diet should be of plain, wholesome, substantial food, and in many cases one of the lighter wines may be added to the principal meal of the day with decided advantage. Gymnastics may be prescribed, but outdoor life should be urged, with horseback riding as the very best mode of exercise for promoting the flow. A change of air and scene exerts a well-known and powerful influence in improving nutrition and modifying vital actions. It should be rather from the city to the country for these cases. Special advantages may be derived from a residence at the seaside on account of the beneficial effects of surf-bathing. A scientifically-conducted hydropathic establishment is very desirable for its regular hours, well-ordered diet, and treatment by baths and douches. Or a watering-place may be preferred where a chalybeate water may exert a special influence in addition to those of moderate indulgence in the gayety and amusement of such a place.