SCIENCES. 32 letters or pieces (mostly L.A.S.) François Arago, Félix de Azara, Paul Marais de Beauchamp, Paul Bert, J.Y. Cousteau, Jean Dausset, Michael Davidoff, Yves Delage, Octave Duboscq (draft of article written with Pierre-Paul Grassé), Louis Isidore Duperrey, Isidore Geoffroy Saint-Hilaire, François Gros, Axel M. Hemmingsen, Hirowo Ito, Félix Jolyet, Trevor Kincaid, Henri de Lacaze-Duthiers (2), Ramon Margalet, Ernst Messerschmid, Mathieu Orfila, Émile Roux, Camille Sauvageau, Philip L. Sclater (diploma from the Societas Zoologica Londinensis for Léon Vaillant), D'Arcy W. Thompson, etc. Plus some attached documents.