L'armonica / lettera del signor Beniamino Franklin al padre Giambatista Beccaria regio professore di fisica nell' università di Torino dall' Inglese recata nell' Italiano.

Translated by G. Vernazza.
Includes poem L'armonica by P. Metastasio.
Printer's name from colophon.
"The Italian bibliography of this piece poses several problems. On 15 September 1768 the Baron Vernazza wrote to a friend: 'The Armonica has not yet been printed. But it will be printed at the beginning of next week. I have contemplated removing my name from the frontispiece for good reasons.' (see V. Armando, Bibliografia dei lavori a stamp del barone Giuseppe Vernazza, 8-9, Alba, Sansoldi, 1913). In fact, the copies of the separate publication of the armonica letter owned by the Liceo Musicale of Bologna, the Biblioteca Palatina of Parma, and by Mr. Reichner lack the phrase 'per Giuseppe Vernazza di Alba.' It is impossible to determine whether the printer had already turned out a number of copies before Vernazza could inform him of the change in his plans, or whether Vernazza changed his mind about omitting his signature after a first anonymous printing. Perhaps Vernazza authorized the publication of a few copies with his name for private distribution: the one in Truniese Academy of Sciences was his personal gift to Count Prospero Balbo."--Cf. Pace.