Night had come on before all the necessary preparations were completed. Combustibles having been placed in most of the houses, and bands of men employed to set fire to them at a given signal, the conflagration began almost simultaneously on every side, and in a surprisingly short space of time the city was encompassed by a semicircle of fire. The spires and towers of the churches caught the red reflection of the flames, and a ruddy glow illumined the massive roof and tower of the cathedral. All the principal buildings were lighted up. Viewed from the heights, it seemed as if the fire, which burnt with great fierceness, was gaining upon the walls and gates; but this was not so, all needful precautions having been taken to prevent its too near approach. Luckily the night was almost calm. A gentle breeze from the south carried the flames from the city. Overhead hung a cloud of smoke. The spectacle was magnificent; the soldiers could be seen on the gates and walls, the engineers on the summit of Fort Royal and the Blockhouse, while all the troops outside the city were clearly distinguishable. The conflagration did the Royalists an unexpected service by revealing the engineers engaged in raising the breastwork in front of Perry Wood. The operations of these men were quickly stopped by the guns of Fort Royal, to which they offered an excellent mark. Two artillerymen and a matross were killed, and the rest dispersed. The defenders of the fort, having thus learnt that a detachment of the enemy was hidden in Perry Wood, continued their cannonade briskly, and sent shot into different parts of the thicket in the hope of dislodging the Parliamentarians. Little did they think that among those whom they had driven off was the Lord General himself, who chanced at the time to be superintending the construction of the breastwork. One of the artillerymen was killed close beside him. With the utmost calmness, Cromwell gave orders to the engineers to suspend their work till the fire had burnt out, and then deliberately withdrew to a place of safety, whence he watched the progress of the conflagration, the cause of which he had comprehended from the first. Several shots passed over his head and shattered the trees beyond him, as he stood behind a hedge bank with his constant attendant Dighton. His curiosity was excited, for the fortifications were more completely revealed by this fierce glare than by daylight. He could count the large guns on Fort Royal, and the sakers, demi-cannons, culverins, and falcons on the Blockhouse. "Ha!" he suddenly exclaimed. "Methinks I see the young man, Charles Stuart, on the summit of yon blustering fort, which he took from Colonel James, and which I shall soon retake from him. Were he wise, he would stop this furious and senseless cannonading. But the noise pleases him. Dost note what he has done, Dighton?" "He has fortified the city strongly, according to my opinion, your excellency."