Besides the works already mentioned, he published _Hebräische Sprachlehre für Anfänger_ (1792); _Aramäische od. Chaldäische u. Syrische Sprachlehre für Anfänger_(1793); _Arabische Sprachlehre_ (1796); _Elementarbuch der hebr. Sprache_ (1799); _Chaldäische Chrestomathie_ (1800); _Arabische Chrestomathie_ (1802); _Lexicon arabico-latinum chrestomathiae accommodatum_ (1802); an edition of the Hebrew Bible (1806); _Grammatica linguae hebraicae_ (1809); a critical commentary on the Messianic passages of the Old Testament (_Vaticinia prophetarum de Jesu Messia_, 1815). In 1821 a collection of _Nachträge_ appeared, containing six dissertations on Biblical subjects. The English translation of the _Archaeologia_ by T. C. Upham (1840) has passed through several editions. JAHN, OTTO (1813-1869), German archaeologist, philologist, and writer on art and music, was born at Kiel on the 16th of June 1813. After the completion of his university studies at Kiel, Leipzig and Berlin, he travelled for three years in France and Italy; in 1839 he became privatdocent at Kiel, and in 1842 professor-extraordinary of archaeology and philology at Greifswald (ordinary professor 1845). In 1847 he accepted the chair of archaeology at Leipzig, of which he was deprived in 1851 for having taken part in the political movements of 1848-1849. In 1855 he was appointed professor of the science of antiquity, and director of the academical art museum at Bonn, and in 1867 he was called to succeed E. Gerhard at Berlin. He died at Göttingen, on the 9th of September 1869.