INDEX. 361 



Pietra ligia, fpecies of limeftone, 272. 



i columbina, fpecies of macigno, 270. 



Blue limeftone, 88. 

 tTEgitto, black oriental Bafaltes, with Hornblende, 333. 



fongaja, white, calcareous, porous, 119. 

 forte, limeftone fometimes mixed with mica, 272.92. 



Breaks into rhomboi'dal forms and pentagones, 273. 

 Species, called Turcbina, contains nodules of 

 coals, 274. 



. fruticulofa, an antique Pudding-ftone, 222. 

 tTIJiria, a calcareous foft marble, 33, 34. 



Mala, a place in the Apennine mountains, flaming by 



burning Petroleum, 283. 



.. morta, the uppermoft loofe bed of macigno, 92. 270. 

 . ,. nffritica, Italian name of green Bacon-ftone, 89. 

 Black oriental Bafaltes, with Hornblende, 233. 



objidiana, black vitrification found in Lavas, 56. 



- purucbina. See Alabafter. 



-.. . qziadrata, Italian name of cubic marcafite, a 20. 



' " di Sarto, Italian name of Smectis, or white Soap-ftone, 



292. 



>- Serena, fpecies of macigno, 270. 

 Stellaria, petrified corals, 219. 

 T Tur china, fpecies of macigno, 270. 



Species of limeftone, 88. 272. 

 Pilati (Abate) at Brefcia, 320. 

 Pinna marina, and its filk, 1 19. 

 Pipcrino, petrified volcanic afhes, 63. 181. 



. mixed with merl and limeftone fragments, 235. 



, di S. Fiffra, called Pictra Salixa, 242. 



i from Viterbo, appears often m iquare columnar pieces, 



and has a natural tendency to cryftallize as many 



other volcanic productions, 236. 



Pifa, 



