IV cotjtents. 



Page 



Chap. XX. — DigreJJhn relative to the 

 different Volcanic Producfions ef 

 the Euganean Mountains — . — 216 



Rejle^ions and Corollaries — — ^o i 



Chap, XXI. — ILxperimental Efiqtiiries 

 relative to the Nature of the Gafis 

 ofVolcanos, and the Caufes of their 

 Eruptions — — — 317 



Chap. XXII. — Difcovery that various 

 volcanic ProduBs contain Muriatic 

 Acid — Enquiry how this Acid has 

 been produced y and mixed with 

 them ' — — — 386' 



TRAVELS 



