8 SOIL AND CLIMATE.
ful storm now rages : flash upon flash, and peal suc-
ceeding peal, the lightning illumines the whole
heavens, and the thunder rolls most fearfully, as if
the sky were about to open and the earth to burst
;
streams of water pour down with violence, which
the soil is incapable of imbibing, and torrents are
thus formed, destined, however, soon to be lost in
the sands. Showers of this description generally
last over one quarter of an hour, seldom for a longer
period, and very rarely, indeed, are they repeated
on the same day. They remit frequently during
two, three, or even six days, and this is the most
unhealthy, and even dangerous time both for stran-
gers and natives ; but it is admitted by general
consent, that those of white colour suffer more than
the blacks.
As if by magic, Nature now awakes from her
sleep of death ; for, immediately after the first
shower, the earth is clad with verdure, the trees
shoot forth fresh buds, and a vesture of flowers is
spread over the whole country.
Certain districts of Kordofan, whose position
is not elevated, may, indeed, be compared with
Paradise. Everything there appears in most per-
fect luxuriance. All the trees and bushes are
covered with flowers and fruit, so that the leaves
are scarcely discernible. The grass attains a height
sufficient to cover a rider and his horse. Creeping
plants wind themselves up to the summit of the
highest trees ; in short, the force and vigour of