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Cornelius Tacitus, The History (ed. Alfred John Church, William Jackson Brodribb) 6 0 Browse Search
C. Suetonius Tranquillus, The Lives of the Caesars (ed. Alexander Thomson) 4 0 Browse Search
Sextus Propertius, Elegies (ed. Vincent Katz) 4 0 Browse Search
Polybius, Histories 4 0 Browse Search
Knight's Mechanical Encyclopedia (ed. Knight) 4 0 Browse Search
C. Suetonius Tranquillus, The Lives of the Caesars (ed. Alexander Thomson) 4 0 Browse Search
The Daily Dispatch: January 30, 1865., [Electronic resource] 2 0 Browse Search
Q. Horatius Flaccus (Horace), The Works of Horace (ed. C. Smart, Theodore Alois Buckley) 2 0 Browse Search
Vitruvius Pollio, The Ten Books on Architecture (ed. Morris Hicky Morgan) 2 0 Browse Search
C. Suetonius Tranquillus, The Lives of the Caesars (ed. Alexander Thomson) 2 0 Browse Search
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Browsing named entities in Vitruvius Pollio, The Ten Books on Architecture (ed. Morris Hicky Morgan). You can also browse the collection for Umbria (Italy) or search for Umbria (Italy) in all documents.

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Vitruvius Pollio, The Ten Books on Architecture (ed. Morris Hicky Morgan), BOOK II, CHAPTER VII: STONE (search)
to be used in building are taken and brought together. The stone in quarries is found to be of different and unlike qualities. In some it is soft: for example, in the environs of the city at the quarries of Grotta Rossa, Palla, Fidenae, and of the Alban hills; in others, it is medium, as at Tivoli, 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. 2. All these soft kinds have the advantage that they can be easily worked as soon as they have been taken from the quarries. Under cover they play their part well; but in open and exposed situations the frost and rime make them crumble, and they go to pieces. On the seacoast, too, the salt eats away and dissolves them, nor can they stand great heat either. But travertine and all stone of that class can stand in