Major Burn-Murdoch determined to fall back on his infantry support and escape from the bad ground. He gave the order, and the squadrons wheeled about by troops and began to retire. Forthwith the Dervish horse charged, and, galloping furiously into the defile, attacked the cavalry in rear. Both sides were crowded in the narrow space. The wildest confusion followed, and the dust raised by the horses' hoofs hung over all like a yellow London fog, amid which the bewildered combatants discharged their pistols and thrust at random. The Egyptian cavalry, thus highly tried, showed at first no disposition to turn to meet the attack. The tumult drowned all words of command. A disaster appeared imminent. But the British officers, who had naturally been at the head of the column during its advance, were now at the rear and nearest the enemy. Collecting a score of troopers, they made such resistance with their swords and revolvers that they actually held the defile and beat back the Dervish horse, who retired on their infantry, leaving a dozen dead upon the ground. Two of the Egyptian squadrons continued to retreat until clear of the defile, a distance of 700 yards; but the third and rearmost was compelled by the British officers to face about, and, galloping with this force down the ravine, Major Burn-Murdoch drove the Arabs pell-mell out of it. The other two squadrons had now returned, and the whole force dismounted, and, taking up a position among the sandhills near the mouth of the defile, opened fire with their carbines. The repulse of their cavalry seemed to have disheartened the Dervishes, for they made no attempt to attack the dismounted troopers, and contented themselves with maintaining a desultory fire, which was so ill-aimed that but little loss was caused. The heat of the weather was terrific, and both men and horses suffered acutely from thirst. The squadron which had escorted the Sirdar had performed a long march before the reconnaissance and was exhausted. The cavalry, however, held their position among the sandhills and easily defeated a feeble attempt to turn their right. At a quarter past twelve the Dervishes began to retire slowly and deliberately, and by one o'clock, when the XIth Soudanese arrived, eager and agog, the last Arab had disappeared. The force then returned to camp, bearing many spears and leading six captured horses as trophies of victory. The intensity of the heat may be gauged by the fact that one of the Soudanese soldiers--that is to say, an African negro--died of sunstroke. Such was the affair of the 1st of May, and it is pleasing to relate that in this fierce fight the loss was not severe. One British officer, Captain Fitton, was slightly wounded. One native soldier was killed; one was mortally and eight severely wounded.