Mediae Murus
(
τὸ Μηδίας τεῖχος). An artificial wall which ran from
the Euphrates to the Tigris, at the point where they approach nearest, and divided Mesopotamia
from Babylonia. It is described by Xenophon (
Anab. ii. 4) as being 20 parasangs long
Anab.,
100 feet high, and 20 thick, and as built of baked bricks, cemented with asphalt. Its
erection was ascribed to Semiramis.