An address by the secretary of the American Climatological Association, Dr. Guy Hinsdale,1 before the balneologic section of the Royal Society of Medicine in London serves to remind us once more of the rather chaotic conditions which still exist in the United States in relation to the subject of mineral springs. It is still quite true, as Hinsdale remarks, that the definition of a mineral water varies with the point of view of the chemist, the geologist, the physician and the dealer. Each has his standard, and no arbitrary line depending on total content of minerals or salts in solution can be drawn between so-called pure waters and those commonly denominated as mineral waters. Indeed, some of the most popular and commercially valuable "mineral" waters in America have almost a minimum of solid constituents in solution.
The Third International Congress of Physiotherapy in 1910 passed resolutions recommending: a revision