ABSTRACT
T HE conviction to which Vannetti was led, after a minute comparison of all the evidence relative to Giuseppe Balsamo and the Marquis Pellegrini, to the orphan Acharat and the Count Alexander de Cagliostro, would have developed into
certitude if he had known the movements two years earlier, at Palermo, of the great German writer whom he had been unable to meet at Rovereto.
