Last year I read a paper before this Society entitled "A Résumé of the Opinions Upon the Nauheim Treatment of Chronic Disease of the Heart."1 In the course of that paper I referred to the following statement made by Mackenzie:2
I found that from ten to twenty years ago, when the notion was prevalent that to have a good heart you must have a strong pulse, these baths had a remarkable effect in strengthening the pulse, raising the arterial pressure 20, 30 and 40 mm. Hg. But nowadays, the fashion being to soften a strong pulse, these waters are discovered to have a remarkable effect in lowering the arterial pressure. So remarkable are these waters that it is averred that they can increase the pressure when it is low and lower the pressure when it is low and lower the pressure when it is high.
SWAN JM. THE INFLUENCE OF CARBONATED BRINE (NAUHEIM) BATHS ON BLOOD-PRESSURE. Arch Intern Med (Chic). 1912;X(2):73–96. doi:10.1001/archinte.1912.00060200002001