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‎Fixation des images qui se forment au foyer d'une chambre obscure. (Seance du Lundi 7 Janvier 1839).‎

‎Paris, Bachelier, 1839. 4to. No wrappers. In: ""Comptes Rendus Hebdomadaires des Séances de L'Academie des Sciences"", Tome VIII No. 1. Pp. 1-36. (Entire issue offered with htitles and titlepages to volume 8). Arago's paper: Pp. 4-7. Light toning to halftitle. Stamps to title-page (one punched in lower margin). Fine and clan.‎

‎First printing of the first announcement and description of the production of Daguerreotypes made by Arago to the French Academy on January 7, 1839. The first complete report was printed on August 19, 1839. The presentation by Arago preceeded Daguerre's own publication ""Historique de description des procédés du daguerreotype et du diorama"", (1839).""Arago, himself a chemist and a member of the Chamber of Deputies, made a brief pronouncement on Daguerre's proces in the Chamber on 7 January 1839 (the paper offered). and in the following August printed the full text of his report thereon made to a joint sesion of the Chambers of Deputies and the Academy of Sciences.""(PMM: 318 (Note to).‎