At three o'clock a tremendous roar of fire in the direction of Fort Dupres burst out, as some seven or eight thousand of the insurgents, among whom were a number of Arabs, poured out from the nearest gate to endeavour to carry the battery, while at the same moment a tremendous musketry fire from the minarets and roof of the Mosque of Hassan, and from the houses near the wall, was poured at the French artillerymen, to prevent them from working their guns upon their assailants. Gonmartin, however, had with him three battalions of infantry and 300 cavalry, and with these he charged the advancing crowd. The Arabs fought bravely, but were, for the most part, slain, and the insurgents, unable to stand the heavy volleys, followed by a bayonet charge of the infantry, fled back to the gate from which they had sallied out, 400 of them being taken prisoners and sent to the citadel.