The course of the Euphrates, which from Hit to the mounds of Mohammed (long.

44 deg.) had been E.S.E., becomes much more southerly, while that of the Tigris--which, as we have seen, was for awhile due south--becomes once more only slightly south of east, till near Serut, where the distance between the rivers has increased from twenty to a hundred miles.

After passing respectively Serut and El Khitr, the two streams converge rapidly.

The flow of the Euphrates is at first E.S.

E., and then a little north of east to Kurnah, while that of the Tigris is S.S.E.