οὐκ ἔστι γῆρας τοῦδε τοῦ μιάσματος → that pollution never wears out, that pollution can never grow old
prophesy: P. and V. λόγος, ὁ, λόγια, τά, Ar. also V. φάτις, ἡ; see prediction.
art of prognosticating: P. and V. μαντεία, ἡ, μαντική, ἡ.