II. That menorrhagia, as well as amenorrhoea, may have a purely {202} emotional origin there can be no question, although this cause is not generally recognized. The following case is an illustration: A healthy young married woman, while menstruating, saw a neighbor's son thrown from his horse; his foot became entangled in the stirrup, and he was trampled to death before her eyes. She was immediately taken with flooding, and profuse menstruation occurred for several succeeding periods. Siredey expresses doubts as to cardiac and pulmonary diseases so frequently causing menorrhagia as they are generally believed to do. In a considerable experience during several years, and paying special attention to this point, he found but one case thus caused. The mechanical effect of disease of the abdominal organs in producing passive congestion in distal parts is more direct and the influence in producing menorrhagia more apparent. The same may be said of accumulations in the bowels and the pressure of abdominal tumors. Peri-uterine inflammations rank very high in the list of causes: their presence and results, direct and indirect, as abscesses, displacements of the uterus, etc., should never be overlooked. Ovarian influence is naturally a potent etiological factor; menorrhagia is a frequent result of sexual excesses, and is often seen in prostitutes and where there is great disparity of age between the husband and wife. III. Affections of the uterus itself are by far the most frequent cause of menorrhagia. The necessity of investigating accurately the condition of the great central organ of menstruation, and of ascertaining to what particular disease the derangement of the flow is to be attributed, will bear repetition. That an anatomical or pathological diagnosis can always be made is not maintained, but when examination has failed to reveal a basis for such a diagnosis, the practitioner should distrust his position and consider his diagnosis provisional only, awaiting more information from renewed examination or from further progress of the case. The cases are few in which such a diagnosis cannot be made. They are recognized by the term congestion as a cause in the schedule given above. Congestion is of course the prominent factor in many cases of menorrhagia, as in those from polypi and fibroids, those produced by ovarian influences, and others which are evident. But the class here recognized consists of those cases in which no anatomical or other cause can be found, excess of the congestive element of menstruation alone affording a rational explanation. Such cases occur most frequently at the two extremes of life--at puberty and at the menopause. During both these periods menorrhagia often occurs unexpectedly and inexplicably.