Ip6 TRAVELS THROUGH 



1. Grey or yellow brown tufo, with fmall whits 

 farinaceous fnerl-cryftals. 



2. Red puzzolana with red pumice-ftones. 



3. Greenim-grey ferruminated ames, with black 

 fherl-lamelles, white garnet-like fherls, and fmall 

 pumice-ftones. This tufo is called Piperino *. 



4. Spungy and compact black lava without and 

 with white garnet-lherls. 



Thefe volcanic productions alternate without any 

 order but that which accident gave them in the 

 former eruptions. The lava, as well as the Pipe- 

 rino, contain calcined fragments of limeftone ; 

 and, on the road up the hill, appear plenty 

 of large limeftone fragments, of fherl, of lamel- 

 lated fherl, and of mica; which, in former 

 times, have been thrown out by fubterranc- 

 ous force. This mews, that the volcanic pro- 

 ductions of monte Albano and of Vefuvius are 

 exactly the fame. The view from its top is very 

 extenfive and agreeable ; comprehending the beau- 

 tiful plains and the fca towards Terracing, Rome, 

 the Tiber, and its wide-ftretching claffical neigh- 

 bourhood. At the foot of monte Albano you fee 

 Lago di Nemi, and Lago di Caftello^ or d* Albano, 



* In the Piperino of monte Albano I have obferved frag- 

 ments of white quartz, with great cubic black iherl-glimmer 

 or horn-blende, which entirely refembled the antique Granito 

 ntro> except that by heat it had been cracked. 



both 



