It is not my intention in the present work to enter into the details of
my first year's exploration on the Abyssinian frontier; that being so
extensive and so completely isolated from the grand White Nile
expedition, that an amalgamation of the two would create confusion. I
shall therefore reserve the exploration of the Abyssinian tributaries
for a future publication, and confine my present description of the
Abyssinian rivers to a general outline of the Atbara and Blue Nile,
showing the origin of their floods and their effect upon the inundations
in Lower Egypt.

I followed the banks of the Atbara to the junction of the Settite or
Taccazy river; I then followed the latter grand stream into the
Abyssinian mountains in the Base country. From thence I crossed over to
the rivers Salaam and Angrab, at the foot of the magnificent range of
mountains from which they flow direct into the Atbara. Having explored
those rivers, I passed through an extensive and beautiful tract of
country forming a portion of Abyssinia on the south bank of the river
Salaam; and again crossing the Atbara, I arrived at the frontier town of
Gellabat, known by Bruce as "Ras el Feel." Marching due west from that
point I arrived at the river Rahad, in about lat. 12 degrees 30 minutes;
descending its banks I crossed over a narrow strip of country to the
west, arriving at the river Dinder, and following these streams to their
junction with the Blue Nile, I descended that grand river to Khartoum,
having been exactly twelve months from the day I had left Berber.

The whole of the above-mentioned rivers--i.e. the Atbara, Settite,
Salaam, Angrab, Rahad, Dinder, and Blue Nile--are the great drains of
Abyssinia, all having a uniform course from southeast to northwest, and
meeting the main Nile in two mouths; by the Blue Nile at Khartoum, 15