( «il ) 



On reviewing the different volcanic bodje* 

 which I met with at Felicuda, we fhall find 

 that they confiit of giafles, pumices, tufas, 

 puzzolana, and lavas with a bafe of flioerl, 

 feltfpar in the mafs, or horn-ftone. The illand 

 ^t prefent exhibits no indication of fubter- 

 ranean fire, and even thofe figns which are 

 uncertain and equivocal are wanting; fuch, 

 for inftance, as warm fprings. 



In the various excurfions I made, I was 

 particularly attentive to obferve if by acci- 

 dent I fliould meet with any body not vol- 

 canized ; and found one only of this de- 

 fcription. This was a piece of detached gra- 

 nite, lying on the fliore near the Grotta del 

 Bove Marino. Its elements were of the moft: 

 common kind ; mica, feltfpar, and quartz. 

 The mica was partly black, and partly 

 white and filvery ; both forming groups in 

 which the black predominated. The quartz 

 was in fmall femi-tranfparent maffes, of a 

 vitreous and brilliant fradure, foft to the 

 touch, and of a colour between a blue and 

 a white. The feltfpar, which in quantity 



exceeded 



