5', near Semiram.

Thence to the Tigris it has a course which in direct distance is 150 miles, and 200 if we include only main windings.

The whole course cannot be less than 380 miles, which is about the length of the Great Zab river.

The width attained before the confluence with the Tigris is 60 yards, or three times the width of the Greater, and seven times that of the Lesser Zab.
On the opposite side of the Tigris, the traveller comes upon a region far less favored by nature than that of which we have been lately speaking.

Western Assyria has but a scanty supply of water; and unless the labor of man is skilfully applied to compensate this natural deficiency, the greater part of the region tends to be, for ten months out of the twelve, a desert.