MÜLLER, GERHARD FRIEDRICH, a German traveller and author, was born at Herford in Westphalia in 1705. By Professor Mencke, under whom he studied at Leipzig, he was recommended to the government of Russia. Having been admitted into the newly-founded Academy of St Petersburg, he taught Latin, history, and geography, and was afterwards promoted to the chair of history. His unwearied devotion to his duties, and his elegant scholarship, soon recommended him to higher appointments. Employed in 1740 to accompany De Lisle into Siberia, he spent ten toilsome years in studying the geography and antiquities of that barbarous and desert country. Soon after his return he was nominated historiographer to the Russian empire. The office of keeper of the archives was added in 1766. He was next appointed to draw up a collection of the diplomatic treaties of Russia, on the model of the Corps Diplomatique of Dumont. In the discharge of all these duties he acquired a knowledge of the history of the empire equally minute and extensive. His unflagging industry embodied that information in a number of works which have proved an inexhaustible source of information to succeeding annalists, and which entitle their author to the appellation of the "father of Russian history." Müller died in October 1783. His principal work is a Collection for the History of Russia, in 9 vols. 8vo, St Petersburg, 1722-64.