THE 



EDINBURGH NEW 

 PHILOSOPHICAL JOURNAL. 



On the Volcanic Strata exposed by a Section made on the site of 

 the New Thermal Spring discovered near the Town of Torre 

 del Jnnnnziata, in the Bay of Naples ; with some Remarks 

 on the Gases evolved by this and other Springs, connected 

 with the Volcanos of Campania. By Charles Daubeny, 

 F. R. S. & F. G. S. Professor of Chemistry, Oxford.* Com- 

 municated by the Author. 



The discovery of a warm acidulous spring, possessing, as it 

 is said, considerable medicinal virtues, on a point of land which 

 runs into the sea near the town of Torre del Annunziata, at the 

 foot of Vesuvius, has led to the removal of a considerable por- 

 tion of the overhanging cliff, for the purpose of obtaining space 

 enough for the erection of a pump-room, baths, &c. 



A clear and distinct section has thus been exposed of the vol- 

 canic strata constituting that part of the slope of Vesuvius, of 

 which a short account may perhaps be acceptable, as supply- 

 ing evidence of two at least, if not of three, distinct eruptions of 

 volcanic matter having overspread that country, within a period 

 of history, the limits of which may be defined by the evidence 

 afforded. 



The entire height of the cliff, to which the accompanying 

 drawing refers, taken from a point immediately behind the 



* Read before the Geological Society of London, 1835. 

 VOL. XIX. NO. XXXVIII. OCTOBER 1835. Q 



