TCD MS 10516 folio 86 verso
[12th October 1916] Pencil sketch of the confluence of the Tigris and Euphrates rivers.
Tigris coming from the North unites with the Euphrates from the west at a right angle to form the Shatt-al-Arab. Now, at this confluence, the Tigris is the greater of the two rivers, and its volume of water pouring through the left bank of the Euphrates is forcing the latter river to yield before the inflow. The Euphrates is