The high grass upon
the table lands, although yellow, would not be sufficiently
inflammable until the end of November.
The numerous watercourses that drained the table lands during the
rainy season were now dry. No sooner had the grass turned yellow,
than the pest of the country, the seroot fly, disappeared; thus
the presence of this insect may be dated from about 10th July to
10th October. As the fly vanished, the giraffes also left the
neighbourhood. By a few days' exploration, I found that the point
of land from the junction of the Settite river with the Atbara,
formed a narrow peninsula which was no wider than eight miles
across from our encampment: thus the herds of game retreating
from the south before the attacks of the seroot, found themselves
driven into a cut-de-sac upon the strip of land between the broad
and deep rivers the Settite and Atbara, which in the rainy season
they dared not cross. All this country being uninhabited, there
were several varieties of game at all seasons, but the three
rainy months insure a good supply of elephants and giraffes;
these retreat about thirty miles farther south, when permitted by
the cessation of the flies to return to their favourite haunts.
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