Plate VI from "Campi Phlegraei: observations on the volcanos of the Two Sicilies as they have been communicated to the Royal society of London", 1776, by Sir William Hamilton (1730-1803). Source notes: "with 54 plates illuminated from drawings taken and colour'd after nature, under the inspection of the author, by the editor Peter Fabris". *63-415, Houghton Library, Harvard University