CASSINI DE THURY, César François [Cassini III] (1714-1784). La Meridienne de l'Observatoire Royal de Paris, verifiée dans toute l'étendue du Royaume par de nouvelles observations, Paris: chez Hippolyte-Louis Guerin, 1744, 4°, 14 folding engraved plates, including 5 maps, 3 engraved head-pieces by Moreau (plate X soiled, perforation on title and accession number on a2, stamp on verso of plates), contemporary calf (extremities worn, spine lacking) [Honeyman 616; Norman 413]; and 2 other works by Cassini (both lacking a number of plates). (3)

细节

CASSINI DE THURY, César François [Cassini III] (1714-1784). La Meridienne de l'Observatoire Royal de Paris, verifiée dans toute l'étendue du Royaume par de nouvelles observations, Paris: chez Hippolyte-Louis Guerin, 1744, 4°, 14 folding engraved plates, including 5 maps, 3 engraved head-pieces by Moreau (plate X soiled, perforation on title and accession number on a2, stamp on verso of plates), contemporary calf (extremities worn, spine lacking) [Honeyman 616; Norman 413]; and 2 other works by Cassini (both lacking a number of plates). (3)

拍品专文

Cassini de Thury learned the principles of geodesy while assisting his father, Jacques Cassini, to take measurements that would provide evidence for the Cartesian hypothesis of a terrestial globe that was elongated at the two poles. However, in the present work he corrected his father's views to conform with the Newtonian view of a globe flattened at the poles. To do this, he used new measurements of the Paris meridian, making his findings the basis for the first modern map of France.