We pushed forward at the usual rapid amble of the donkeys; and,
accompanied by Hadji Achmet upon his dromedary, with the
coffee-pot, &c. and a large Persian rug slung behind the saddle,
we quickly distanced the slower caravan under the charge of Hadji
Velli and the sullen Mahomet.

There was no difficulty in the route, as the sterile desert of
sand and pebbles was bounded by a fringe of bush amid mimosa that
marked the course of the Nile, to which our way lay parallel.
There was no object to attract particular attention, and no sound
but that of the bleating goats driven homeward by the Arab boys,
and the sharp cry of the desert sand grouse as they arrived in
flocks to drink in the welcome river. The flight of these birds
is extremely rapid, and is more like that of the pigeon than the
grouse; they inhabit the desert, but they travel great distances
both night and morning to water, as they invariably drink twice
a day. As they approach the river they utter the cry "Chuckow,
chuckow," in a loud clear note, and immediately after drinking
they return upon their long flight to the desert. There are
several varieties of the sand grouse. I have met with three, but
they are dry, tough, and worthless as game.

We slept in the desert about five miles from Berber, and on the
following day, after a scorching march of about twenty miles, we
arrived at the junction of the Atbara river with the Nile.
Throughout the route the barren sand stretched to the horizon on
the left, while on the right, within a mile of the Nile, the soil
was sufficiently rich to support a certain amount of
vegetation--chiefly dwarf mimosas and the Asclepias gigantea. The