70 THE EMPTY QUARTER tlie water. * There the guide falters, and you cannot blame,' quoted 3Ali from a poem attributed to the legendary King of Wabar. Yet as we marched we soon found ourselves in the midst of unmistakable indications of the propinquity of a watering—the almost obliterated camel-paths of an almost forgotten past, meandering apparently aimlessly across the plain. Suddenly 'Ali's quick eye perceived the strewn dung- pellets that betrayed the immediate precincts of the well and in a few moments we had dismounted at the spot we sought. The well was dead and completely buried, scarcely percep- tible indeed except as a shallow dip in the surrounding flat- ness. Long neglected, deserted and forgotten, the site alone remained as a pathetic memorial to the enterprise £Cnd in- dustry of its author, Ibn al Adham of the Buhaih Murra whose name it bears. In the now dim past he had dug out the shaft to a depth of eight fathoms, and the Murra camels had been watered here for years until a period of neglect— doubtless also a period of drought which had kept the grazing herds away—had done its inevitable work of destruction. Since then no man has had the energy to reopen the pit. As we now breasted up towards the conspicuous brown line of the Jafura dunes, the plain gradually became more sandy with long trails lying to south-eastward of the scanty 'Arrad shrubs. We passed into Jafura at the point where the low ridge already mentioned plunges into the sands and, as we stood on the crest of the first wave surveying the scene, it seemed that at intervals on either side of us the gravel desert ran into and under the sands in a series of parallel groin-like dykes. Here and there these ribs lay exposed amid the sands with a thick covering of pebbles as of some ancient beach. Elsewhere all was sand, in long monotonous waves or tumbled dunes or shallow and undulating plains. And it was all amazingly bare—such vegetation as there was in the hollows or on exposed patches of gravel or rock at the base of the dunes being dead or moribund. Animal life was correspondingly conspicuous by its absence—an occasional tiny colony of larks, once an eagle poised high above the desolation in search of game, a single dragonfly and a few