A treatise on the medicinal qualities of Bath waters [electronic resource] : in three parts. Part I, Explains the Nature and Qualities of these Waters, as proved by Rational Experiments. Part II. Points out the various Diseases incident to human Nature, in which these Waters may be successfully used. The Causes of those Diseases, and the Operation of these Waters on the animal Humours and Fibres, Philosophically accounted for. Part III, Teaches the Method of preparing the Body for the Reception of these Waters, and the Method of using them internally and externally. By J. N. Stevens, M. D. of Bath, And Fellow of the Royal Accademy of Sciences.