For several nights, the works of the besiegers were eagerly pushed, but still they were not so forward, as had been expected. Some of the besieging corps began to be sickly; the King of Prussia having resolved to employ no more labourers, it was reckoned, that the soldiers, for eight-and-forty hours of work, had only eighteen of rest. On the other hand, they were assured, that the garrison must be equally fatigued, since, in such an extensive fortification, none could be left long unemployed. The French had been, for some time, busied in forming what is called a Fleche at the head of one of their forts, and this was thought necessary to be destroyed. It was attacked in the night of the 12th and 13th by the Austrians; but so much time was passed in their operations, that the French fell upon them, in great force, about two in the morning, and beat them away, with loss. The Austrians were as little employed as possible in services of this fort. On the 13th of July, another battery was stormed by the Prussians; but, as the officer, unlike the Austrians, advanced with too little caution, his party was much hurt by some pieces of concealed cannon, and the enterprise failed. The night of the 13th and 14th was passed in much agitation by the garrison and inhabitants. Several of the public buildings were set fire to and burned by grenades. The works of the besiegers were now greatly advanced. The garrison made five sorties in this night, and were repulsed in all, losing an hundred men, while the besiegers lost eight killed and one-and-thirty wounded. On the 14th of July, a cessation of arms took place from seven o'clock in the morning till one. In the city, the French celebrated their annual fête; General d'OYRÉ and the troops took the oath, and MERLIN delivered an address to them. In the Austrian camp, the Prince de CONDÉ was received with a _feu de joye_. During this cessation, the soldiers upon the different outposts entered into conversation with each other, and the French boasted of the difficulties they laboured under from the length of the siege. At night, an affair at the Fleche cost the allies, who succeeded in part, ninety men; the French confessed, that this work cost them in all three hundred. The inhabitants of the city were again greatly alarmed, their streets being covered with a shower of grenades. The laboratory and a part of the Benedictine abbey were burned, and two explosions took place at the former. The whole city shook with each report, and, in the nearer parts, all the windows were broken and the doors burst open. The remainder of the hay and straw was consumed in this fire; the whole stock of other forage was reduced to a sufficiency for four days; and the surgeon's stores were much damaged.