ITALY. LETTER V. 49 



without any marks of petrifactions. Somewhat 

 lower you meet with calcareous beds, inclofing 

 petrified bivalves^ tmnMiuKriL and turbimtcs j then 

 follows black very hard lava, cracked and broken 

 into frnall pieces, which have nearly an angu- 

 lated prifmatical form; afterwards red clay 'or 

 marie with petrifactions j again lava with pumice- 

 ftones and breccia, or limeflones cemented by 

 lava ; other limeftone beds with petrifactions, and 

 fo on. This hill furnifhes plenty of very hand- 

 fome and well-p refer ved different forts of : oftracites 9 

 murices, anemia , and bones. There may be about 

 thirty different fpecies. D'drgenvitle has men- 

 tioned them in particular, p. 175. They are found 

 not only in the calcareous flrata, but likewife in the 

 lava in the volcanic fands and afhes, which, mixed 

 and coagulated with limeftones, have produced a 

 fpecies of breccia. There are different forts of 

 pumice-flones. I have been told, that fome years 

 ago there was a new eruption of fire and fmoke, 

 which has deftroyed and changed a large part of 

 this mountain. 



At S. Giovanni Bariom, in the Veronefe diflricl, 

 over-againft the houfe of Mr. Bahi, on the other 

 fide of the river, there is plenty of lenticular ti . 



Boka is a deep and barren hill, at twenty miles 



diftance from Verona, for the mod part of ftrati- 



fied lirneltonej but now and then interrupted by 



E ancient 



