	On 20 May 1790, Keir communicated to the Royal Society "Experiments and Observations on the Dissolution of Metals in Acids, and their Precipitations, with an Account of a new compound Acid Menstruum, useful in some technical operations of parting metals". This paper contains suggestions which may have contributed to the discovery of the electro-plate process. It was translated into German later the same year by Augustin Gottfried Ludwig Lentin as " Versuche und Beobachtungen über die Auflösung der Metalle in Säuren ... "