MERLES, Balthazar de, marquis de Beauchamp (1622-1702), Fren - Lot 298

Lot n° 298
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1500 - 2000 EUR
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Result : 1 500EUR
MERLES, Balthazar de, marquis de Beauchamp (1622-1702), Fren - Lot 298
MERLES, Balthazar de, marquis de Beauchamp (1622-1702), French geographer and astronomer. Unsigned autograph manuscript, concerning the floods of the Durance. [Second half of the 17th century - Watermark with a bell with a crowned heart cartouche and the initials VB]. Two quires of 12 pp. and 32 pp. in-folio that is 44 pp. Rare manuscript illustrated with a large folding map showing the bed of the Durance with innumerable annotations, scale, geographical markers and about 30 diagrams in the text. Beautiful manuscript in two parts: the first one begins with a large map of the Durance river bed in 1624 followed by 10 pages of calculations and trigonometric figures. The second part, entitled "Determination of the bed of the Durance according to a report made in the year 1624. Par des commissaires députés de la part de N St Père et de sa majesté très chrestienne ", " Vérification de l'endroit où furent placés les termes qui déterminent le bord du lit de le Durance [...] ", etc; counts 32 pages of texts and algebraic calculations, illustrated with diagrams. Beauchamp, who taught geography, was then looking for a way to dam the Durance, which overflowed every year. This manuscript was kept inside a folio page from the terrier of Hugues de Sade, present in this same sale (lot n° 64).
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