At about eleven o'clock the gunboats had ascended the Nile, and now engaged the enemy's batteries on both banks. Throughout the day the loud reports of their guns could be heard, and, looking from our position on the ridge, we could see the white vessels steaming slowly forward against the current, under clouds of black smoke from their furnaces and amid other clouds of white smoke from the artillery. The forts, which mounted nearly fifty guns, replied vigorously; but the British aim was accurate and their fire crushing. The embrasures were smashed to bits and many of the Dervish guns dismounted. The rifle trenches which flanked the forts were swept by the Maxim guns. The heavier projectiles, striking the mud walls of the works and houses, dashed the red dust high into the air and scattered destruction around. Despite the tenacity and courage of the Dervish gunners, they were driven from their defences and took refuge among the streets of the city. The great wall of Omdurman was breached in many places, and a large number of unfortunate non-combatants were killed and wounded. Meanwhile the Arab irregulars, under Major Wortley, had been sharply engaged. That officer's orders were to co-operate with the flotilla by taking in rear the forts and fortified villages on the east bank of the river. As soon as the gunboats had silenced the lower forts, Major Wortley ordered the irregulars to advance on them and on the houses. He placed the Jaalin, who were practically the only trustworthy men in his force, in reserve, and formed the tribes according to their capabilities and prejudices. On the order to attack being given, the whole force, some 3,000 strong, advanced on the buildings, from which the Dervishes at once opened fire. Arrived within 500 yards they halted, and began to discharge their rifles in the air; they also indulged in frantic dances expressive of their fury and valour, but declined to advance any further. Major Wortley then ordered the Jaalin to attack. These--formed in a long column, animated by the desire for vengeance, and being besides brave men--moved upon the village at a slow pace, and, surrounding one house after another, captured it and slew all its defenders; including the Dervish Emir and 350 of his followers. The Jaalin themselves suffered a loss of about sixty killed and wounded.