There was but one Sabinus in the Roman army. Cicero answered, with a spirit worthy of his country, that Romans accepted no conditions from enemies in arms. The Gauls might, if they pleased, send a deputation to Caesar, and hear what he would say to them. For himself, he had no authority to listen to them. Force and treachery being alike unavailing, they resolved to starve Cicero out. They had watched the Roman strategy. They had seen and felt the value of the entrenchments. They made a bank and ditch all round the camp, and, though they had no tools but their swords with which to dig turf and cut trees, so many there were of them that the work was completed in three hours.[1] Having thus pinned the Romans in, they slung red-hot balls and flung darts carrying lighted straw over the ramparts of the camp on the thatched roofs of the soldiers' huts. The wind was high, the fire spread, and amidst the smoke and the blaze the Gauls again rushed on from all sides to the assault. Roman discipline was never more severely tried, and never showed its excellence more signally. The houses and stores of the soldiers were in flames behind them. The enemy were pressing on the walls in front, covered by a storm of javelins and stones and arrows, but not a man left his post to save his property or to extinguish the fire. They fought as they stood, striking down rank after rank of the Gauls, who still crowded on, trampling on the bodies of their companions, as the foremost lines fell dead into the ditch. Such as reached the wall never left it alive, for they were driven forward by the throng behind on the swords of the legionaries. Thousands of them had fallen, before, in desperation, they drew back at last. But Cicero's situation was almost desperate too. The huts were destroyed. The majority of the men were wounded, and those able to bear arms were daily growing weaker in number. Caesar was 120 miles distant, and no word had reached him of the danger. Messengers were again sent off, but they were caught one after another, and were tortured to death in front of the ramparts, and the boldest men shrank from risking their lives on so hopeless an enterprise. At length a Nervian slave was found to make another adventure. He was a Gaul, and could easily disguise himself. A letter to Caesar was enclosed in the shaft of his javelin. He glided out of the camp in the dark, passed undetected among the enemies as one of themselves, and, escaping from their lines, made his way to Amiens.