Cairo to Wady-el-Latron, or the Natron Valley, _about_ 19 To a sand hill, (supposed to be the ridge between the Natron Valley and the bed of the Bahr-bela-ma) 4 To Muhabag 13 Mogara 4½ Biljoradeck 16 To a station on the hills of Ummesogeir: said to be 40 hours, _or more_, say 41½ To Ummesogeir 5 Siwah 20 --- Total 123 --- ] [Footnote 16: The ordinary caravan day of 8 hours, appears to be about 20 _British_ miles, _by the road_; and in _direct_ distance across deserts, about 16¼ or 16½ _Geographic_ miles.] [Footnote 17: Siwah to the Valley of _Schiacha_ 23 hours. To Torfaue 6½ Across the Desert to a watering-place on the border of Augila 49 To Augila 9 --- Total 87½ --- ] [Footnote 18: Abulfeda and Ptolemy describe it to be so; and Ledyard was told the same at Cairo.] [Footnote 19: This is the computation: Hours. From Augila to the Mountains of _Moraije_ 26 To the Plain of Sultin 18 Across the Plain or Desert of Sultin, &c. to a woody tract, 3 journies; but no account in hours, say 34 To the entrance of the black Harutsch, about 1 day, say 10 To a watering-place in the Harutsch 4 To the end of the black Harutsch, 3½ days; say 40 Through the white Harutsch, 1½ day; say 15 To a watering-place on the borders of Fezzan 4 To Temissa 9 Zuila 6¾ Hamarra 7 Tragan 10¾ Sidi Bisher 8