INDEX. 



347 



berg, Hornfcls, Geftellitein, and Horn-flate, 227. 



3 2 7- 

 Granite, its conitituent parts, 226. 



" varieties, antique, oriental, and occidental, 226229. 



-- colours, grey, black and white, red, violet, green, 



226 229. 



(grey) with inclofed fragments of black porphyry, 



228. 



-- with {herl inftead of mica, 228. 



' " (grey) a fpecies refembling grey lava,, 156. 

 " - (di Cortona) feems to be grey feva, with oblong 



tranfparent fpots, 268. 



(red) with white and red coloured quartz refembling 



cornelian, 266. 



(violet) from Elba, 294. 



- furrounds the iron mountain in Elba, 294. 



" diflblved or in ilripes found in fome oriental Bafaltes, 



" is confidered by fome learned men in Italy as a fpecie* 



of lava, 



Granitello, a fpecies of Granite, 227. 

 Granitone, Italiaa name of a ftratified rock, alternating with 



Serpentine-ftone beds, and confifting of white fcld= 



{path and green mica or talcous earth, 90, 278. 

 Grifdini (Francefco) at Venice, 29, 

 Groita del cane, 176. 

 Gttaltieri (Dr.) at Florence, 290, 

 GmttareTs hypothefis on the origin of Bafaltes, 61. 



(gry) lamellous, with native fulphur and impreflions of 



plants, 70. 



