Our sure and indefatigable guide in the middle ages and Byzantine history, Charles du Fresne du Cange, has treated in several places of the Greek fire, and his collections leave few gleanings behind. See particularly Glossar. Med. et Infim. Graecitat. p. 1275, sub voce Glossar. Med. et Infim. Latinitat. Ignis Graecus. Observations sur Villehardouin, p. 305, 306. Observations sur Joinville, p. 71, 72.