An account of some experiments and observations on Mrs. Stephens's medicines for dissolving the stone [electronic resource] : wherein Their Dissolving Power is inquir'd into, and shown. By Stephen Hales, D.D. F.R.S. Rector of Faringdon, Hampshire; and Minister of Teddington, Middlesex. To which is added, a supplement to a pamphlet, intitled, A view of the present evidence for and against Mrs. Stephens's medicines, &c. Being A Collection of some Particulars relating to the Discovery of these Medicines, their Publication, Use and Efficacy. By David Hartley, M.A. F.R.S.