 Vincent of Beauvais on his turn based his "Speculum Historiale", which provided a history of the world down to his time, on the "Chronicon" of Helinand.Surviving parts of the "Chronicon" include Books 1-18, covering the period from the creation to the death of Alexander the Great; fragments from Books 19-44, surviving as copies in the "Speculum Maius" of Vincent of Beauvais; the text of books 45-49, which deal with the period from 634 to 1204.Books 45-49 of the "Chronicon" serve as a source for the chronicle by the Cistercian monk Aubri de Trois-Fontaines (Alberic of Trois-Fontaines) (c. 1241).