Thaddens (Polish Bulgarin, Tadeusz Bul-haetn), a Russian author, born in Lithuania in 1789, died at Dorpat, Sept. 13, 1859. His father fought under Kosciuszko in the Polish war of independence, after the close of which his mother removed to St. Petersburg, where Thaddeus was educated at the military academy. In 1805 he took part in the war against France and Sweden, subsequently left the Russian service, fought under Napoleon, and after the emperor's downfall occupied himself with literary pursuits in Warsaw. After some time he returned to St. Petersburg and devoted himself to Russian literature. In 1823 he edited the " Northern Archives," originally a historical and statistical journal, which he made popular in Russia by his humorous and satirical contributions. In 1825 he published in conjunction with his friend Gretch the " Northern Bee." He became also editor of the first Russian theatrical almanac, called the "Russian Thalia." His complete works, published at St. Petersburg in 1827, and at Leipsic, in German, in 1828, include many of his fugitive essays, and his Spanish sketches, to which he added his Turkish sketches in a separate volume. In 1829 he made his debut as novelist with "Ivan Vuizhigin, or the Russian Gil Bias," of which " Peter Ivanovitch Vuizhigin" is the continuation.

Subsequently he published three works containing pictures of Russian life, "Rostav-leff," "Demetrius," and " Mazeppa." His "Russian Gil Bias" was published in English at Aberdeen in 1831, and his "Russia from a Historical, Statistical, Geographical, and Literary Point of View," one of his most valuable works, has been translated into German. His Vospominaniya, or "Recollections" (6 vols., St. Petersburg, 1844-'9; German translation, 1859-'60), contains interesting reminiscences of his stirring life.