Note 157 — Chapter XIX · BACK THROUGH NUBIA.

“The Nile receives its last tributary, the Atbara, in Lat. 17° 42’ north, at the northern extremity of the peninsular tract anciently called the Island of Meröe, and thence flows north (a single stream without the least accession) through twelve degrees of latitude; or, following its winding course, at least twelve hundred miles to the sea.”—“Blackie’s Imperial Gazetteer,” 1861. A careful survey of the country would probably bring to light the dry beds of many more such tributaries as the one described above.