1 N D E X. 365 



Difference of volcanic Sherls, Vitrifications, and the 



precious Stones, 151 53. 



. . Defcription of the Iceland Calcedonies and volcanic 

 Phenomena, 57. 



< of the Vitreous Iceland Lavas, 158. 



Remarks on fome columns of the Temple. of Serapis 



at Puzzuolo, 172,173. 



> On the flints in limeftone, 58. 69. 1 94. 



" His hypothefis on the origin of the white Saline mar- 



bles confirmed by Arduini's obfervations, 254. 

 Recoaro petrifactions and volcanic productions, 50, 51. 

 Revigliauo (Scoglio di) volcanoj 157. 

 Rczvdato autico, marble, 218. 

 JRitci, manufcripts, 86* 



Rome-, volcanic hills and productions, 189. 191. 201. 234. 

 Ronca petrifactions and marine beds alternating with volcanic 

 ilrata, 47, 48. 



Bafaltes, 63. 



Roji (Lago di monte) volcano, 235, 

 Roflb cumulato antico, marble, 218. 

 . antico, marble, 218. 



Irecclato antico , marble, 218. 



. di Pcrona, marble, 3 24. 



Rojjb (monte) Bafalt-hill, 62, 



Rubilante (CavaL), 303. 



Ruinpbius \ his cabinet at Florence, 80, 81. 



