On the eastern side of the river, on the other hand, there are several important tributaries descending from the Persian mountains: the Khabur, a little north of 37° N., navigable for rafts; the Great Zab, at 36° N., just below Nimrud, the ancient Calah; the Little Zab, about 35° 15' N.; the 'Adhem at 34° N.
It is navigable for steamers to a point a little above the mouth of the Great Zab, about 30 m.
From a little above the confluence of the Great Zab downward, the banks of the river are absolutely uninhabited, and the river flows through a desert until Tekrit is reached.
The central part, the Zab Mountains, is of lower elevation, the Saharan Atlas reaching its culminating point, Jebel Shellia (7611 ft.
By the lower Zab river.
The kingdom of Assyria, which was the outgrowth of the primitive settlement on the site of the city of Assur, was developed by a probably gradual process of colonization in the rich vales of the middle Tigris region, a district watered by the Tigris itself and also by several tributary streams, the chief of which was the lower Zab.'
" Four-god-city"), an ancient town in Adiabene, the capital in Assyrian and pre-Assyrian times of the country between the greater and lesser Zab, and seat of an important cult of Ishtar.
CALAH (so in the Bible; Kalah in the Assyrian inscriptions), an ancient city situated in the angle formed by the Tigris and the upper Zab, 19 m.
And E., Upper Zab on the S.E.
This plain was, for those days, amply protected on three sides by the two rapid broad streams of the Tigris and its tributary Zab, by the hills on the N.E.
(Octagon Prism, 6, 40, 42 seq.) sums up the results of the military operations of his first five years as reaching from the Lower Zab Riviera to the Euphrates Riviera (ebirtan Puratti, well rendered "Parapotamia" by Winckler 4) and Ijatte-land; but this is obviously not a proper name in the same sense as Naharin.
The quarrel was taken up by his brother Abdallah, known by the name of Abu'l-Abbas as-Saffah, who after a decisive victory on the Greater Zab (750) finally crushed the Omayyads and was proclaimed caliph.
Merwan advanced to meet him, and was completely defeated near the Greater Zab, an affluent of the Tigris, in a battle which lasted eleven days.
This comprises most of the upper basin of the Great Zab, with the country of the Nestorian Christians and many districts inhabited by Kurdish tribes, some of them large nomad tribes who descend for the winter to the plains of the Tigris.
To the east of the Tigris lay two kingdoms: Gotdyene (or Cordyene), the country of the Carduchians (now Bohtan), a wild, mountainous district south of Armenia; and Adiabene (Hadyab), the ancient Assyria, on either side of the Zab (Lycus).
Above sea-level in the valley of the Great Zab river.
Biskra is the capital of the Ziban (plural of Zab), a race of mixed Berber and Arab origin, whose villages extend from the southern slopes of the Aures to the Shat Melrir.