Catalogue of double stars, by [Antoine-Joseph] Yvon Villarceau Handwritten catalogue of double stars presented to the Académie des sciences in 1847 by Villarceau, but not published. Enclosure removed from HS/17/418. Preamble introducing the observations of double stars by William Herschel, John Herschel, M. Struve which are used for the following tables. Table 1 giving the positions for various observations between 1782 and 1847 with orbit relative to Hercules, 1st approximation and a corrected position. Table 2 comparing the obsevations taken at different date by the astronomers and Villarceau's proposed approximations and corrections. 1 February 1849