[113]Part of this chapter is taken from my paper on “Desert Water Supplies” in the Cairo Scientific Journal for 1908 (Vol. II), pp. 234-242.

[114]I except the tiny spring called Megwel Hamida, which is a mere trickle of very salty water.

[115]Samples collected on two different dates; the figures show the variability of the water at the same well.

[116]Not determined.

[117]Berichte der Commission für Oceanographische Forschungen, Sechste Reihe, Wien 1898, p. 510.

[118]Cf. the Marah of the Israelites, Exodus 15, 23. “They could not drink of the waters of Marah, for they were bitter; therefore, the name of it was called Marah.”

[119]This is in latitude 27° 35′ N., and therefore outside the limits of the region specially described in this memoir, but is quoted as a useful example.

[120]Pronounced to rhyme with the English word shalt.

[121]The map of the roads and water sources on [Plate III,] p. 26, should be referred to in connexion with this list.