Glasgow University Library MS. Ferguson 243. 15 pages. 427x267mm. Early 19th Century. [Becher, John Joachim, M.D.] The new and curious Experiment of the perpetual Mineral of Sand, or What prepares the way of the History or Proposition made by the author to the Potent DD states of Holland about the Extraction of Gold with the materials of Shore Sand, with advantage, by means of Perpetual Mineral or Great Operation of Fusion. In place of a third Supplement to his subterraneous Physics or Natural Philosophy by John Joachim Becher MD, Counsel of the King's sacred Majesty 1680. Transcribed from the Manuscript by GJW.