Cornelius Tacitus, A Dialogue Concerning Oratory, or the Causes of Corrupt Eloquence
“ TIGRANOCERTA, a town of Armenia Major, built by Tigranes in the time of the Mithridatic war. The river Nicephorus washes one side of the town. Brotier says, it is now called Sert or Sered.TIGRIS, a great river bounding the country called Mesopotamia to the east, while the Euphrates incloses it to the west. Pliny gives an account of the Tigris, in its rise and progress, till it sinks under ground near Mount Taurus, and breaks forth again with a rapid current, falling at last into the Persian Gulf. ”
