SHAK2JA 229 Sala-Ziqirt tract to Shanna. From here the line would have run east to Muqshin, whence it would have worked northward along the western foot of the Oman mountains to rejoin the present Persian Gulf in the neighbourhood of Masandam. Such a line is of course largely a matter of conjecture but may surely be regarded provisionally as being in general accord with the known facts until other sections of this vast unknown area are traversed and examined by future explorers, A gentle north-east breeze, soft and warm, breathed over us that afternoon as I wandered up the valley towards our grazing camels to seek out Muhammad, always a willing ally in my designs on the elusive lizards and birds of the desert. My shot-gun being now hopelessly out of action, I was reduced to using a pocket revolver on the tiny targets pre- sented by small birds, distant and restless. I had just missed a shrike—the only one seen during the journey—when from afar off towards the north-east a rifle-shot rang out clearly in the still air. I imagined that one of my companions had per- haps fired at a hare for the pot, but we were soon undeceived. We were about a mile from the camp, and the movements of our distant companions left little doubt that the shot had been fired as an alarm-signal. There seemed to be a general movement towards the ridge beyond our tents, and Muham- mad was able to interpret the raucous sounds emitted in our direction as orders to drive in the camels. In a moment the quiet peaceful valley seemed to be alive with human activity, and I helped Muhammad to round up the nearest camels while 'All did the same for those further away. Slowly we moved towards the tents trying to interpret, as we went, the significance of the little knots of our companions occupying scattered points of vantage some distance beyond them or moving hither and thither under cover of the dune-ridges. Leaving Muhammad to drive in the animals to camp, I struck across the valley to ascertain the cause of the commotion from a group of men occupying the summit of a great dune. The warning had, it appeared, been fired by Farraj who, as he kept watch, had spotted three men riding towards Shanna from the eastward. If only he had remained hidden and