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OF THE PAPAL STATES. 



259 



22 and 23.— Varieties 



Monte 



7 ^ — 



for the ordinary building stones of Rome. — Presented bj 



Warincrton W 



24. — Grey peperino, with augite, calc spar, mica, &c, 

 from the lower portion of the mass. — Albano. Presented 

 by Warington W. Smyth, F. G. S. 



25. — Grey peperino, with fragments of scoriaceous lava, 



>/ 



Marino 



26. — Grey peperino, with fragments of scoriaceous lava, 

 augite, mica, and large fragments of carbonate of lime 

 {metamorphic limestone). — Marino. 



27. 



Grey Peperino, with fragments of lava, augite, 



From the great cavern under Marino. 



leucite, and mica. 



28. — Greyish peperino, with mica, calc spar, and crys- 

 tals of augite. — Gensano. 



29. — Grey peperino, containing green and black mica, 

 with crystals of leucite, augite, and olivine. — From the lake 

 below Marino. 



30. — Grey peperino, with fragments of lava, augite, 

 leucite, mica, and calc spar (some in crystals). — Pantanello, 

 3 miles from Marino. 



31. — Ash-grey peperino, with fragments of lava, augite, 

 and mica, and a large crystal of the latter. — From the ascent 

 to Ariccia. 



32. — Grey peperino, with augite, small scales of mica, 

 leucite, and fragments of metamorphic limestone. — Albano. 



33. — Volcanic ash, with small fragments of augite. 

 From Tempesta, in the basin of Lake Albano. 



34. — Brick-red ashes, with fragments of augite and leu- 

 cite, forming the bed of the basaltic lava stream of Capo di 

 Bove. 



35. — *Greyish-white ashes. — Monte Artemisio, near 

 Velletri. 



* These are used, when mixed with lime, for making the cement 

 called Pozzuolana. 



I 2 



Upper 

 Galleey. 



Table-case 

 in Recess 6. 



