"The simoom," says Bruce, "with the wind at southeast, immediately follows the wind at north, and the usual despondency that always accompanies it. The blue meteor, with which it began, passed over us about twelve, and the ruffling wind that followed it continued till near two. Silence, and a desperate kind of indifference about life, were the immediate effect upon us; and I began now, seeing the condition of my camels, to fear we were all doomed to a sandy grave, and to contemplate it with some degree of resignation. At half past eight in the evening we alighted in a sandy flat, where there was great store of bent grass and trees, which had a considerable degree of verdure, a circumstance much in favour of our camels. We determined to stop here, to give them an opportunity of eating their fill where they could find it." On the 22d, at six o'clock, as they were crossing this sandy flat, one of the Tucorory was seized with phrensy or madness. He rolled upon the ground, moaned, and refused to continue his journey, or to rise from where he lay. It was death to stop with him; and as each man was barely able to support his own sufferings, and could not participate in those of others, the wretched maniac was left to die among the thirsting sands, under the scorching sun which had already deprived him of his reason. In the evening the party reached Umarack, where another of the camels died, completely worn out and exhausted. "I here began," says Bruce, "to provide for the worst. I saw the fate of our camels approaching, and that our men grew weak in proportion; our bread, too, began to fail us, although we had plenty of camel's flesh in its stead; our water, though in all appearance we were to find it more frequently than in the beginning of our journey, was nevertheless brackish, and scarcely served the purpose to quench our thirst; and, above all, the dreadful simoom had perfectly exhausted our strength, and brought upon us a degree of cowardice and languor that we struggled with in vain. I therefore, as the last effort, began to throw away everything weighty I could spare, or what was not absolutely necessary, such as all shells, fossils, minerals, and petrifactions that I could get at, the counter-cases of my quadrant, telescopes, and clock, and several such like things. "Our camels were now reduced to five, and it did not seem that these were capable of continuing their journey much longer. In that case, no remedy remained but that each man should carry his own water and provisions. Now, as no one man could carry the water he should use between well and well, and it was more than probable that that distance would be doubled by some of the wells being found dry; and, if that were not the case, yet, as it was impossible for a man to carry his provisions who could not walk without any burden at all, our situations seemed to be most desperate."