François ARAGO, astronomer and physicist. He was President o - Lot 466

François ARAGO, astronomer and physicist. He was President of the Executive Commission (Head of Government) in 1848 [Estagel / Roussillon 1786 - 1853] -Letter written and signed in his own hand, 1 page in-4 plus address page with postmarks, headed "Institut de France. Académie Royale des Sciences. Le Secrétaire perpétuel de l'Académie", with engraved emblematic vignette "Minerve", Paris, December 5, 1831, to British physicist Michael FARADAY[1791-1867] inLondon: "Monsieur, l'Académie a reçu le mémoire que vous avez bien voulu lui adresser :sur une classe particulière de figures acoustiques et sur les formes qu'affectent des fluides placés sur des surfaces élastiques vibrantes. I am honored to offer you my thanks. The work has been deposited in the Bibliothèque de l'Institut."