Letter, from Nathaniel Wallich to Sir John Herschel, dated at 5 Upper Gower St., Bedford Square [Bloomsbury] Autograph letter signed by sender. Trying to produce quality flax from Bengal's china grass Urtica. John Frederick William Herschel's suggestions were helpful. Will see H. C. Oersted in Copenhagen. Account of Copenhagen festivities was bungled by editor. 27 November 1850