In large 4° (310x230 mm); pp. 120, 505, (3), portrait of Galvani engraved in copper by Marchi based on a drawing by Spagnoli, lithographic plate reproducing a facsimile of a letter from the author, with 9 plates, 4 of which are folded. Editorial printed paperback. First collective edition, which also contains some parts in the first edition, first critical edition of the “De viribus electricitatis”. Immaculate example, with burrs and uncut. Rossetti Cantoni, p. 45.