 His first work, issued in 1732 (Paris), was a vocabulary of Hebrew roots, "Racines hebraïques sans points-voyelles", compiled after the manner of Lancelot's long famous "Jardin des racines grecques".In 1746 he published his "Prolegomena in Scripturam Sacram" (2 vols., 4to) and a Latin translation of the Psalms, "Psalmorum versio vulgata et versio nova ad hebraicam veritatem facta" (16mo), followed two years later (1748) by a critical edition of the Hebrew Psalter, "Psalmi hebraici mendis quam plurim is expurgati" (Leyden, l6mo).These volumes were but the forerunners of his great work, "Biblia hebraica cum notis criticis et versione latinâ ad notas criticas factâ; accedunt libri græci qui deutero-canonici vocantur in tres classes distributi" (4 vols., folio, Paris, 1753–54).