8 P.M. we crossed one of the numerous drains which intersect this desert--"Biya Hablod," or the Girls' Water, a fiumara running from south-west to east and north-east. Although dry, it abounded in the Marer, a tree bearing yellowish red berries full of viscous juice like green gum,--edible but not nice,--and the brighter vegetation showed that water was near the surface. About two hours afterwards, as the sun became oppressive, we unloaded in a water-course, called by my companions Adad or the Acacia Gum [42]: the distance was about twenty-five miles, and the direction S. W. 225° of Kuranyali. We spread our couches of cowhide in the midst of a green mass of tamarisk under a tall Kud tree, a bright-leaved thorn, with balls of golden gum clinging to its boughs, dry berries scattered in its shade, and armies of ants marching to and from its trunk. All slept upon the soft white sand, with arms under their hands, for our spoor across the desert was now unmistakeable. At midday rice was boiled for us by the indefatigable women, and at 3 P.M. we resumed our march towards the hills, which had exchanged their shadowy blue for a coat of pronounced brown. Journeying onwards, we reached the Barragid fiumara, and presently exchanged the plain for rolling ground covered with the remains of an extinct race, and probably alluded to by El Makrizi when he records that the Moslems of Adel had erected,
