LEUSDEN, JOHN, was born at Utretcht in 1624. He studied the Oriental languages, and particularly Hebrew, with great success at the universities of Utrecht and Amsterdam. In 1649 he was appointed professor of Hebrew at Utrecht. He died in 1699. Louden was one of the beat Hebrew scholars of his age, though perhaps not equal to the Buxtorfs. Some of his works may still be consulted with advantage.
The most important of Leusden's works are :—ThilologusHobrxua; Ut., 1656, 1672, 1695, Amst, 1686; Philologns Hebrzeo-Mixtus; Ut., 1663, &o.; Philologus Hebmo•Grecus,' Ut., 1670, ttes (these three volumes contain many curious discussions on the original languages of the Bible, the state of the Hebrew and Greek text, and that of the Septuagint, as well as considerable information on Jewish rites and antiquities); 'Jonas Illustratus; TR., 1656; ' Joel Explicatus; &c.,
Ut., 1657; 'Scholia Syriaca,' 1658-72; ' Onomasticon Sacrum,' 1665; Clay's Hebraica et Philologica Veteris Teatamenti; UL,1683, a useful book for beginners; Claris Grwea Novi Testamenti; Ut, 1672; ' Compendium Grsecum Novi Testamenti,' Ut, 1674, &c.; beat edition, 1762; ' Compendium Biblieum; Ut., 1674, Halle, 1736; ' Novum Teatamentum Grtecurti; Ut., 1675. He also wrote the Preface and Introductions to Athias's ' Hebrew Bible,' Aunt. (1661.67), and gdited Pool's 'Synopsis Criticornm' (1684), and the works of Lightfoot (1699), and Bochart (1675, 1692). He published several Manuals of Hebrew Grammar, which however are almost entirely taken from Buxtorf. He had commenced an edition of the Syriac version of the New Testament, which was published after his death by Schaaf, Leyden, 1708.