one of the divisions of Africa, situated under the tropic of cancer, is bounded by Bildulgerid on the north, by the unknown parts of Africa on the east, by Nigritia or Negroland on the south, and by the Atlantic ocean on the west. This is a barren desert, and so destitute of water, that the camels which pass over it from Morocco to traffic with Negroland, are half loaded with water and provisions.