This document was taken from hand-written letters in the eighteenth century, and also contains quotes from other authors. As such, it's no surprise that there are many spelling and punctuation irregularities. Except where explicitly noted below, these were kept as is. Spelling variants that were preserved include: "Abbate" and "Abate;" "abovementioned" and "above-mentioned;" "AEnaria" and "Enaria;" "ancient" and "antient" (and derivatives); "Astruni" and "Astroni;" "Averno" and "Avernus;" "Giulio Cesare Bracini" and "Giulio Cesare Bruccini;" "Castel-a-Mare," "Castel-a-mare," "Castel a Mare" and "Castle-a-Mare;" "centre" and "center;" "colour" and "color" (and derivatives); "deer" and "deers" (for the plural of "deer"); "enquiry" and "inquiry;" "entirely" and "intirely;" "entituled" and "intituled;" "exteriour" and "exterior;" "honour" and "honor;" "interiour" and "interior;" "lavas" and "lava's" (for the plural of "lava"); "Mare-morto" and "Mare Morto;" "mere" and "meer;" "Mon-Gibello," "Mongibello," "Mon Gibello," "Monte Gibello" and "Mount Gibel;" "o'clock" and "a clock;" "Procida" and "Procita;" "rain water" and "rain-water;" "smoke" and "smoak" (and derivatives); "Solfaterra" and "Solfa terra;" "strata" and "stratas" (for the plural of "stratum"); "Torre dell' Annunciata," "Torre dell' Annunziata" and "Torre del Annunziata;" "Volcanos" and "Volcano's" (for the plural of "Volcano"); "Volcano's" and "Volcanos" (for the possessive of "Volcano"). Changed "that" to "than" on page 85: "on the top of Vesuvius than on that of Etna." Changed "thermomether" to "thermometer" on page 122: "Fahrenheit's thermometer." Inserted missing word "a" on page 129: "fell a great part of the night." A small right-pointing hand appeared at the beginning of the last line of the advertisement. It was replaced by two asterisks. In the text version of this book, the oe-ligature character was replaced by the separate characters, "oe."