[Ernest MOUCHEZ (1821-1892)]. Approximately 120 letters (mostly L.A.S.) to him, 1862-1892. Interesting correspondence from the admiral, astronomer and hydrographer, notably concerning the navy, his 1874 mission to Île Saint-Paul to observe Venus, and the Paris Observatory (of which he was director). P. Bert, de Besnardière, E. Boistel (14, from Senegal and Greece), J. Boullé (from Cairo), E. du Bouzet (Rio de Janeiro), G. Cloué (5), V. Considerant, E. Delacroix, Derrécagaix, H. Deslandres, F. Dieudonné, Ed. Dubois (3), J.B. Dumas, Ch. Duperré, H. Faye, S. Flammarion, C. Fleuriot de Langle, P. Fortin, P. Gautier, H. Guénaire, A. Guillaumin, Guyon, Ph. Hatt, C.A. Henderson, Hilleret, A. Hurlimann, L. Jaubert, J. Krantz, Lacaze-Duthiers, Ledieu, Lindsay, E. Maindros (6), H. Malte-Brun, E. Martin, C. Maunoir, F. Moigno, A. Monniot, Em. Nol (Melo), H. Renan, Eug. Ricard, A. Rogel, G. de Roquemaurel, A. Roussin, Ch. Rouvier, S. Santa-Cruz (de Paramé), A. Schwerer, F. Tisserand (5), L. Tissier, Ch. Trépied, G. Trouvé, Turquet de Beauregard, Vaussenat, J. Vinot, etc. We enclose 2 typewritten copies of the report on the Saint-Paul Island Mission, and 2 cardboard boxes in Mouchez's name.