We noted again how easy their lives were; the soft body and its unexhausted sinews helping the brain to concentrate upon an armchair work: whereas our brains and bodies lay down only for the stupor of an hour’s sleep, in the flush of dawn and the flush of sunset, the two seasons of the day unwholesome for riding. Many a day we had been twenty-two out of the twenty-four hours in the saddle, each taking it in turn to lead through the darkness while the others let their heads nod forward over the pommel in nescience.

Not that it was more than a thin nescience: for even in the deepest of such sleep the foot went on pressing the camel’s shoulder to keep it at the cross-country pace, and the rider awoke if the balance were lost ever so little at a false stride or turn. Then we had had rain, snow or sun beating upon us; little food, little water, and no security against either Turks or Arabs. Yet those forced months with the tribes had let me plan in a surety which seemed lunatic rashness to newcomers, but actually was an exact knowledge of my materials.