ITALY. L E T T E R V. 43 



In the Alps and their ftrata many perruptions and 

 de vacations ; the former appearing at Agorth in 

 Valh Imperina near the mines, and the latter by 

 what I fhall relate. 



The fields near Gallio, Afiago> Campo.di Rovere* 

 and other places, belonging to the Sette Communi, 

 are fituated in the mountains much above the 

 level of the fea, and are covered with a great 

 many detached pieces of granite, quartz, and 

 other vein-rocks, which appear to be forced 

 from, and to belong to, the Tyrolian primitive 

 mountains, Thefe ruins appear in the fame hori- 

 zontal elevation in feveral other places of the Alps, 

 as in Feltrino (Stato Veneto) feparated by the 

 Brenta from the former; weftward on the fame 

 Alps from Aftico to the ^J/g^-river, and fo on. 

 Their quantity and variety of fizes is remarkable 

 at Tonezza and near Folgaria in the hills under the 

 Auftrian jurifdiflion ; which, being entirely calca- 

 reous, and entirely deftitute of found, primi- 

 tive flrata, prove the more that thefe forced 

 and blunted rocks, pebbles, and fands, are ad- 

 ventitious (gejfriefo.) This phenomenon is the 

 more fingular, becaufe thefe ruins are exadlly of 

 the fame kind as thofe which the Adige and 

 Brenta wafhes and carries down from the Tyro- 

 lian mountains ; and the level of thefe rivers being 

 at prefent one thoufand feet lower, it is impofiible 



to 



