Italian physicist (1762–1834) and professor of physics at Bologna. ALS in Italian, signed “Gio. Aldini Ministro Academia Napoleone di Lucca,” three pages on two adjoining sheets, 7.25 x 9.5, August 21, 1812. Letter to Professor Grimaldi, Secretary of the Academy Napoleone. Aldini informs the professor that his personal “friend and colleague” Liberato Baccelli has decided to “send to Lucca” the “model of a marble saw on the principle of a hydraulic lever” invented by Aldini himself. Aldini also provides a small description of the mechanical principle of the lever. Reverse of second integral page bears an address panel and retains most of its red wax seal. Small hole to left edge of both pages, lightly affecting a few letters of text and some light show-through from writing on reverse, otherwise fine condition. RR Auction COA.
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