REV377132 Greek fire (vellum) (detail of 167117) by Byzantine; Prado, Madrid, Spain; (add.info.: flammable composition believed to have consisted of sulfur, naphtha, and quicklime; bronze tubes that emitted jets of liquid fire were mounted on the prows of their galleys and on the walls of Constantinople; Byzantines in 678 and 717-18 destroyed two Saracen fleets with Greek fire;); out of copyright.