( 22 2 ) 



better qualified to aid my refearches ; the 

 Marchefe Antonio Orologio, an accom- 

 plifhed gentleman, and well acquainted 

 with thofe mountains, as he has proved by 

 feveral Eflays replete with accurate and in- 

 terefting obiervations relative to them. 



Having made feveral excurfions with 

 this able guide, I examined the products 

 I met with at my leifure, and feledted thofe 

 that appeared moft fuitable to my purpofe : 

 feveral of which I fhall now proceed to 

 defcribe ; as they are extremely well ad- 

 apted to form a comparifon between the 

 Padaan rocks and thofe of other countries 

 equally volcanic, which I vifited ; as alfo 

 to fhew the nature of the modification3 

 caufed in both by Ere j which comparative 

 obfervations, I flatter myfelf, will not a 

 little conduce to enlarge the fphere of our 

 knowledge refpedling volcanos *. 



I repaired, 



^ At firft view, It may, perhaps, appear fuperfluous 

 that I fnould fay any thing on the Euganean produdls, 

 as a Defcriptive Catalogue has aleady been given of 

 them by Sir Jchn Strange. This naturalift has un- 

 doubtedly 



