Although this is the assurance of a SPA DOCTOR, yet the nature of these waters, and the reputation they have obtained, produce a considerable degree of confidence in the assertion of Dr. Fenner. 3. In great weakness of the nerves, and where their influence is not sufficient to impart energy to the various functions, particularly of chylification and sanguification, the chalybeates of Schwalbach are said to have proved eminently serviceable. Dr. Fenner asserts their efficacy in hypochondriasis, hysteria, melancholia, and in partial and complete paralysis. In sterility they have also acquired considerable reputation. COUNTER-INDICATIONS. The waters of Schwalbach have limits to their medicinal agency, and are even injurious in many states of disease. 1. In plethoric states of the constitution, accompanied by irritable condition of the heart and great vessels—in sanguineous temperaments—and in all cases where there is a tendency to local inflammation or general fever—or even to congestion in any of the organs or tissues of the body. “High attacks of acute inflammation, of hæmorrhage, and of apoplexy, have followed the imprudent employment of these chalybeates.”—_Fenner._ 2. In those cases of indigestion, connected with, or dependent on, organic disease of stomach, liver, spleen, kidneys, or mesenteric glands, these waters would be improper and hurtful. 3. But the chalybeates of Schwalbach are not to be recommended in cases where the vital powers are _greatly_ prostrated—the blood and humours extremely vitiated—or the nervous system too much shattered. “Those who venture on these waters, under such circumstances, and where the constitution is at so low an ebb,—‘trouvent, loin des siens et de leur patrie, une mort certaine et premature.’”—_Fenner._ * * * * * The waters are taken fasting. The best season is the spring and summer. From one to three glasses are prescribed, with a quarter of an hour’s exercise between each glass. After this a light breakfast, where the bath is not used. THE BATHS.