sentences:  In connection with this work he drew up a "Dizionario Storico degli Autori Ebrei e delle loro Opere" (Parma, 1802; German translation by Hamberger, Leipzig, 1839), in which he summed up in alphabetical order the bibliographical notices contained in Wolf, and, among other things, fixed the year of Rashi's birth; he also published a catalogue of his own manuscripts (1803) and books (1812).All these studies were in a measure preparatory and subsidiary to his "Variæ Lectiones Veteris Testamenti" (Parma, 1784–88), still the most complete collection of variants of the Hebrew text of the Old Testament.In order to compile it he visited all the chief libraries of Italy, and through its compilation he obtained the knighthood of St. George at the court of Parma and seductive offers from Pavia, Madrid, and Rome.