Summary

The Anglo-Egyptian Sudan: a compendium prepared by officers of the Sudan government…

Most of country between Omdurman and El Safia is so barren that the grazing grounds are very limited in area, and the population is so sparse that beaten tracks are only to be found in the vicinity of the watering places.
Most of the country is scattered with low samr bush, which, not being in leaf owing to the scarcity of rain this year, affords little shade. Dead trees afford an abundant supply of fuel. Many wells get partly filled up with drift sand, or with mud brought down by the infiltration of water, which may be quickly cleaned out.
Source: Gutenberg

The Anglo-Egyptian Sudan: a compendium prepared by officers of the Sudan government…

The only people who know all the small meshras off the road, and they perhaps over a limited portion of the river, are the Arabs (Hadendoas) who are grazing their flocks there. If the traveller, therefore, because he is marching with troops or for any other reason, wishes to use the less well-known meshras, he must depend on local inquiries and should, therefore, have with him men who speak Hadendoa.
Source: Gutenberg

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