Trone Noe 6 in **£,191.6 Herschel, Sir John Frederick William, bart. On the separation of iron from other metals. Lond. Bulmer & N. 1821. 9 pp. 4°. From the Philosophical trans, of the Royal soc. of Lond, 1821 [¥**#B,172,.1.1821. Pt. 1].