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Tre Discorsi sopra il Modo d'alzar Acque - [CEREDI, Giuseppe] - 1567. [1278400]
Woodcut printer's device on title, four folding woodcut plates within pagination (numbered 69, 70, 75, & 78), & 8 woodcuts in the text. 10 p.l., 100 pp. (i.e. 99). Small 4to, cont. limp vellum (faint dampstaining in upper & lower margins). Parma: S. Viotti, 1567. First edition of an uncommon and important illustrated work on the Archimedean screw and improvements made to it. Following the publication of Ceredi's book describing the screw and the granting of a patent by the Venetian Republic, these pumps became more widely used in southern Europe for drainage and irrigation. Galileo later made improvements to it. "The engineer Giuseppe Ceredi of Piacenza…published at Parma in 1567 a book called Tre Discorsi sopra il Modo d'Alzar Acque da' Luoghi Bassi (Three Discourses on Means of Raising Water from Low Places). Ceredi was interested in the construction and use of the Archimedean screw for the irrigation of fields and the draining of swamps. He had found that the devices in use were inefficient, and sought to discover the rules of design by which they might be improved. The results led him to specify a maximum length and optimum dimension for the water-channel, to suggest batteries of screws for lifts higher than the efficient maximum length, and to examine the design of cranks and other devices for turning the screws. Though not written in deductive form, Ceredi's investigations belong to theoretical mechanics; they are reminiscent of the experiential rules given by Philo of Byzantium for the construction of ballistae… "Also worthy of note, though unrelated to our subject, is Ceredi's economic analysis of the probable gain in crop yield through irrigation as compared with the operating and capital costs of machinery and the expense of labour in harvesting and hauling to market the increased yield."-Drake and Drabkin, Mechanics in Sixteenth-Century Italy, pp. 51-2. The attractive woodcut plates depict various aspects and uses of the screw. Very good copy. ? Hoover 210. Riccardi, I, 339.
      [Bookseller: Jonathan A. Hill, Bookseller, Inc.]
Last Found On: 2016-11-30           Check availability:      Biblio    

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