Nuovo Trattato sulla vera Rettificazione del Circolo Misurato esattmente con il Diametro, utile alla Trigonometria … Con una Dissertazione sul Modo di navigare sott'Acqua.
Edizione Seconda.Feliciano Campitelli, Foligno , 1817 Stock Code: 43772
NotesFirst edition to include the section on underwater navigation, illustrated with a wonderful etching of a submarine propelled by oars, including a cut-away view. Count Gaetano Marchetti Tomassi (1774-1857), a nobleman born in Foligno near Perugia, was an amateur scientist. He devised one of several methods of squaring the circle, which constitutes the first part of the first treatise of the present book, the second part containing a discussion on conical sections. The most interesting part, however, is the second treatise, where the author proposes a new model of submarine, moved by the tides and able to submerge and resurface with the use of a mechanism similar to the swimbladder of fish. Marchetti Tomassi claims to have first described this boat in a publication issued in Ancona in 1800, though in a very imperfect form. Apparently a boat built to those specifications was given a trial at Rouen, under the eye of Napoleon. Thus Marchetti Tomassi anticipated Fulton at least in the concept of a submarine, though he does not appear to have heard of him. Marchetti proposes military applications for his submarine, though he has no conception of a torpedo and only mentions the use of classical artillery kept dry in his submarine.
Quarto (204 x 144 mm). Contemporary bottle green half roan, patterned paper boards, crudely marbled edges.
6 etched plates.
A little light toning, some worming at the spine with trails penetrating through the text-block, largely marginal, but minor loss to text and plates, rear hinge cracked but holding, remains very good.
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