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Csar-franois Cassini De ThuryCsar-Franois Cassini de Thury (June 17, 1714 – September 4, 1784) was a French astronomer, son of Jacques Cassini. Cassini de Thury was born at the Paris Observatory. He succeeded to his father’s official employments in 1756, continued the hereditary surveying operations, and began in 1744 the construction of a great topographical map of France. The post of director of the Paris observatory was created for his benefit in 1771, when the establishment ceased to be a dependency of the French Academy of Sciences. His chief works were: La mridienne de l’Observatoire Royal de Paris (1744), Description gometrique de la terre (1775), and Description gometrique de la France (1784).
Cassini de Thury, Cesar-Francois Cassini de Thury, Cesar-Francois Cassini de Thury, Cesar-Francois
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