The chalybeate nature of the Bruckenauer is unequivocally evinced by the great deposition of iron on all parts of the basin in which it is contained—and by the strong iron gout which it leaves in the mouth after being swallowed. Although there is only a quarter of a grain of steel in the pint, yet this mineral is at its maximum of oxidation, in consequence of the great proportion of carbonic acid gas, and the BRUCKENAUER is therefore held to be the clearest and most pure chalybeate in the world. The physiological effects of this spa are considered to be highly stimulating, tonic, and astringent—augmenting the velocity of the circulation, and the volume of the pulse—oxygenating the blood—giving tone to the body, and colour to the lips and cheeks of the blanched female. In addition to these valuable qualities, the Bruckenau waters are said to possess the opposite ones—of tranquillizing (“arresting every symptom of irregular mobility,”) of the nervous system. Now, if all the spa-doctors, between Carlsbad in the East, and Saratoga in the West, combined to certify this fact, I would remain sceptical. I will not maintain that such conflicting qualities are incompatible with each other; but it would require very weighty facts to induce me to believe that they co-exist in this pure chalybeate spring. Bruckenau is to Germany what Tonbridge Wells is to England. Although the _latter_ spa contains much more iron than the Continental one, Bruckenau has greatly the advantage in the large proportion of carbonic acid gas, rendering the German chalybeate infinitely more tonic than the English.