The Anseba, at the point we crossed,
is about 4,000 feet above the level of the sea; Haboob about 4,500.]
the country is well wooded, and watered by innumerable small streams.
The soil is formed of the detritus of the volcanic rocks, specially
of feldspar; pumice abounds in the ravines. The channels of the
rivulets are the only roads for the traveller. This mountain chain
is, on the whole, a pleasant spot, more delightful for the reason
that it rises between the arid shores of the Red Sea and the flat,
hot, and level plains of the Soudan. The province of Barka is a
boundless prairie, about 2,500 feet above the level of the sea,
covered at the time of our journey with half-dried grass some five
or six feet high, and dotted here and there with small woods of
stunted mimosas.
From Barka to Metemma we find alluvium as the general formation.
Water is scarce; even a month after the rainy season all the rivers
are dried up, and water is only obtained by digging in the sand of
the dry beds of the river Barka and its tributaries. When we passed
through these plains many spots were still green; but a few months
later we should have crossed a parched-up prairie little better
than the desert itself.
Our pretty songsters of Ain were no more to be seen.
