Marcus Vitruvius Pollio Quotes:
Ocupation: Author
Life: d. 15
Birthday: d. 15
The stone in quarries is found to be of different and unlike qualities. In some it is soft, in others it is medium, 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.
source: "De architectura". Book by Vitruvius. Book II, Chapter VII, Section 1,
topic: Cutting, Umbria, White, Lava, Quarry, Red And Black
