De Lorenzo, Guiseppi. (1904). ‘the History of the Volcanic Action in the Phlegraean Fields’ extract from the QJGSDe Lorenzo, Guiseppi. (1904). the History of the Volcanic Action in the Phlegraean Fields extract from the Quarterly Journal of the Geological Society of London, v. 60. pp. 296 315. With colour printed maps: Geological Sketch [Map] of the Bay of Naples at 1: 500,000, and Geological Sketch [Map] of the Campi Phlegraei at 1: 100,000 both 14 x 21. 5cm, and colour printed sections of the Bay of Naples and of the Campi Plegraei at the same scales as the