ITALY. LETTER XII. II 



to be ftill more fo in hotter weather. The inn- 

 keeper at Sermonetta, and his whole family, have 

 a yellowifti complexion ; and generally, the inha- 

 bitants of this country are much fubjedt to agues, 

 quartan, and other fevers. 



Behind Sermonetta to Vehtri the Apennines run 

 more to the right, though ever in view ; the 

 country becomes plain, and is, half way to Fektri, 

 covered with red volcanic ames, from which a 

 heavy rain had warned a great quantity of black 

 iron-fand, or fmall magnetic fherl-cryftallizations. 

 Nearer towards Vehtri this red puzzolana is heaped 

 into fmall hills, which feem to be produced by the 

 old eruptions of the adjacent monte Albano. This 

 extinct volcano is a high mountain, with two old 

 funnels at its foot, which are funk into two lakes, 

 called Lago d'Albano and Lago di Nemi. The 

 mountain is but a refiduous part of the former 

 volcano. Having refolved to examine it in an 

 excuriion from Rome, I only obferve now, that 

 this mountain confifts of a fort of (lone, which 

 the Romans call Piperino y and is properly a green- 

 ilh-grey ferruminated volcanic cinericious ftone, 

 mixed with black merl-lamelles, and farinaceous 

 white garnet-like merls ; now and then it is per- 

 rupted by large torrents of black lava, which is 

 employed thereabout in mafonry and pavings. 



N 3 Some 



