INDEX. 



ancient \-olcanos, 126. 

 B. 



Bacon-Jlone in Serpentine- ftone fifTiires, 277. See Steafilts. 



BalJaJjciri (Gluf.) at Siena, 247. 



Baldo (monte), 20, 21. 



Bardi^lio di Carrara, grey marble, 298. 



Bardclloni indurated clay beds, alternating with limeftone, 271* 



Bafaltes columnar or prifmatlcal. 



At monte Catajo near Padua, i . 



In monte Bello, 6z. 63. 



At Bolzena, 238. 



In OT0/0 ^t Diavolo, 62, 63. 



Ronca, 62, 63. 



^^, 62, 63. 



$. Lucca, 62, 63. 



Is cryftallized hard lava, 60, 61. 



Is a fpecies of fherl rock, 148. 



Contains (herl cryftallizations, 230, 231, 232, and lime- 

 {tone, 241. 



Ufed by the Ancients in ftamp-mills, 239. 



Bafaltes occidentalis 



Ufed at Rome, is a black compact lava from monie Albany 



199. 

 Bajaltes orientalis 



Is in fubftance, hardnefs, colour, and nature, entirely 

 refembling to the Italian prifmatical Bafaltes and harder 

 lavas, 230. 

 Its varieties, black, grey, green, 231 233* 



