The synthetic preparation of urea was the first occasion that an organic compound was built up from inorganic materials. Wöhler’s discovery led eventually to the brilliant results that have been achieved in attempts to synthesize other organic compounds. A French translation of this article appears in Ann. Chim. (Paris), 1828, 37, 330-34. English translation in Leicester & Klickstein (eds.), A source book in chemistry 1400-1900, Cambridge, Mass., 1952. Digital facsimile from the Internet Archive at this link.