An easy and very practicable method to enable deaf persons to hear Together with A brief Account of, and some Reflections and Observations upon, the several Attempts formerly made for the Benefit of such Persons. Translated from the German of Andrew Alias Buchner, Professor of Medicine and Natural Philosophy in the University of Halle - Büchner, Andreas Elias 1701-1769 (printed for Mess. Hawes, Clarke, and Collins, Booksellers in Paternoster-Row, 1770)