ALDINI (G). DE ANIMALI ELECTRICITATE DISSERTATIONES DUAE. Bononiae, ex typographia Instituti Scientiarum, 1794. in-4° of [2]-41-[1] pages, marbled paper boards, gilt frame on boards. (later binding). VERY RARE FIRST EDITION. It is illustrated with a vignette on the title and 2 folding plates, all engraved in bistre. "The author describes his experiments carried out in 1793 and 1794. He continued the experiments on animal electricity that his uncle Galvani had demonstrated (see Galvani). This text played an important role in the controversy between Galvani and Volta, which led to the latter's discovery of the voltaic battery. Copy with an AUTOGRAPH ENVOIR FROM THE AUTHOR. "Comiti Klenau. Invicti Austro-Rossici, Exercitus Duci / Singularis obsequii significationem exhibet Auctor. Huzard library stamp and old Alain Brieux label. Lacks to the spine of the hardback, copy with large margins.