LA ROCHEFOUCAULD D'ENVILLE (Louis Alexandre Duc de) Military - Lot 214

LA ROCHEFOUCAULD D'ENVILLE (Louis Alexandre Duc de) Military then Scientist, Member of the Academy of Sciences, Deputy of the Nobility of Paris, in the States-General of 1789; He asked for the liberation of the Blacks; after August 10, he retired to Gisors, where he was massacred. He was a friend of Franklin and La Fayette's. (1743 - 1792) Self-signed letter to Mr BANNERET D'OSTERWALD, in Neufchâtel (Switzerland) - Paris 3 April 1781 - 1p in-4°, stamp - Relating to a book shipment (volumes 9,10,11,12,16 and 17 of the Arts et Métiers and the 1st of the Russians' discoveries). He has also learned of the misfortune of several letters (books) from his correspondent and he does not see "at least some time from now in the hope that the inexorable prohibition can stop." As a scientist, the Duke of La Rochefoucauld was involved in mineralogy and geology; he was particularly interested in the constitution of diamonds.