its whole course, which may be reckoned at 100 or 120 miles.

The Khabour is a much more considerable river. It collects the waters
which flow southward from at least two-thirds of the Mons Masius, and
has, besides, an important source, which the Arabs regard as the true
"head of the spring," derived apparently from a spur of the Sinjar
range. This stream, which rises about lat. 36° 40', long. 40°, flows a
little south of east to its junction near Koukab with the Jerujer or
river Nisi-his, which comes down from Mons Masius with a course not
much west of south. Both of these branches are formed by the union of a
number of streams. Neither of them is fordable for some distance above
their junction; and below it, they constitute a river of such magnitude
as to be navigable for a considerable distance by steamers. The course
of the Khabour below Koukab is tortuous; but its general direction is
S.S.W. The entire length of the stream is certainly not less than 200
miles.

The country between the "Mons Masius" and the Sinjar range is an
undulating plain, from 60 to 70 miles in width, almost as devoid of
geographical features as the alluvium of Babylonia. From a height the
whole appears to be a dead level: but the traveller finds, on
descending, that the surface, like that of the American prairies and the
Roman Campagna, really rises and falls in a manner which offers a
decided contrast to the alluvial flats nearer the sea. Great portions of
the tract are very deficient in water. Only small streams descend from
the Sinjar range, and these are soon absorbed by the thirsty soil; so
that except in the immediate vicinity of the hills north and south, and
along the courses of the Khabour, the Belik, and their affluents, there
is little natural fertility, and cultivation is difficult. The soil too
is often gypsiferous, and its salt and nitrous exudations destroy