Statistics for occurrence #1 of “Umbria” in book 2, chapter 7, section 1 of Vitruvius Pollio, The Ten Books on Architecture:
...i, at Amiternum, or Mt. Soracte, and in quarries of this sort; in still others it is hard, as in lava quarries. There are also numerous other kinds: for instance, in Campania, red and black tufas; in Umbria , Picenum, and Venetia, white tufa which can be cut with a toothed saw, like wood....
|Max. Freq.||Min. Freq.|
|†||Umbria (Italy)||46||2||0||0||0 user votes|
|Umbria (Ohio, United States)||4||0||0||0||0 user votes|