INDEX. 341 



According to Mr. Arduini, produced by aqueous volcanic 

 eruptions, and confifting of fine diflblved Hate, 54. 



Commonly mixed with flints, jafpers, and agates, 55. 



According to Mr. Ferber, produced from volcanic afhes 

 and fames, faturated by fulphureous acid, 166, 



Produces flints, 313. 



China manufaftory at Venice, 32. 



At Doccia, near Florence, 264. 

 Cicercbina. 



Calcareous breccia, with lava fragments, 88, 89. 240. 



261. 

 Cinnabar 



in volcanic produftions and lava, 64. 243. 

 CipollazKo antico, marble, 216. 

 Cipollinaccio di Carrara, marble, 298. 

 ClriUo (Domingo) at Naples, 105. 



Clay, 



produced from vitrefcent earth and fulpliureous acid, 166. 

 produced from lava and fulphureous acid, 16^. 236. 

 burnt and deprived of its vifcidity, can be made vifcid 



again by fulphureous acid, 167. 

 a condiment part of Serpentine- ilone, 301. 



See argillaceous ftones. 

 Bardelloni. 

 Cicercbina. 

 Granite. 

 Macigno. 

 Mica. 

 Porplyry. 

 Slate, 



Z 3 



