Jacopo, one of the best of modern Latin scholars, was born in 1682 at Torriggia, in the province of Padua. He published improved editions of several philological works, such as the *Thesaurus Ciceronianus* of Nizolius, the polyglot vocabulary known under the name of Calepino, and others. But his fame chiefly rests on his *Totius Latinitatis Lexicon*, 4 vols., fol., Padua 1771. In the compilation of this work the chief burden seems to have been borne by Facciolati's pupil Forcellini, to whom however the lexicographer allows a very scanty measure of justice, though the work occupied thirty years of his life. This lexicon is the best Latin dictionary that has hitherto been published in any country, and is so comprehensive that it has been remarked—that if the whole body of Latinity were now to perish, it might be restored from this work. Facciolati's mastery of Latin style as displayed in his epistles has been very much admired for its purity and grace. In 1722 Facciolati had been appointed professor of logic in the university of Padua, and despite the many flattering invitations he received to exchange this office for others still more honourable and lucrative, he continued to occupy that chair till his death in 1769, in the 88th year of his age.