Christopher Hamlin, “Chemistry, Medicine, and the Legitimization of English Spas, 1740-1840,” Medical History, Supplement No. 10 (1990): 67-81.
Hamlin, much like he does in A Science of Impurity, discusses the role of chemistry in the legitimization of health spas. He argues that their domination of the conversation was not due to any sort of revolution in techniques — there were actually a lot of widely recognized problems with analyzing mineral waters — but due to a myriad of factors that included the rise of the profession as a whole and individual chemists’ abilities to assert their ability to explain scientifically and objectively the concrete reasons for different spas’ medical effects.
M. D. Eddy, “‘An adept in medicine’: the Reverend Dr William Laing, nervous complaints and the commodification of spa water,” Studies in History and Philosophy of Biological and Biomedical Sciences 39 (2008): 1-13.
Dr. Laing (1742-1812) wrote two works on a town with mineral waters — Peterhead, Scotland — and used his knowledge of medical chemistry (along with testimonials) to explain the therapeutic powers of the waters. Eddy employs this as a case study through which to acquire a better understanding of the development and deployment of medico-scientific knowledge in explaining the therapeutic powers of spa water and its relationship to therapeutic commodification.
This study is outside of the timeline and geographic constraints of my work, but it provides a good historical perspective, and Eddy’s approach and the language he uses to describe some of the things I’m seeing in Eureka Springs are very helpful.