9. Vespasian then set the engines for throwing stones and darts round about the city. The number of the engines was in all a hundred and sixty, and bid them fall to work, and dislodge those that were upon the wall. At the same time such engines as were intended for that purpose threw at once lances upon them with a great noise, and stones of the weight of a talent were thrown by the engines that were prepared for that purpose, together with fire, and a vast multitude of arrows, which made the wall so dangerous, that the Jews durst not only not come upon it, but durst not come to those parts within the walls which were reached by the engines; for the multitude of the Arabian archers, as well also as all those that threw darts and slung stones, fell to work at the same time with the engines. Yet did not the others lie still, when they could not throw at the Romans from a higher place; for they then made sallies out of the city, like private robbers, by parties, and pulled away the hurdles that covered the workmen, and killed them when they were thus naked; and when those workmen gave way, these cast away the earth that composed the bank, and burnt the wooden parts of it, together with the hurdles, till at length Vespasian perceived that the intervals there were between the works were of disadvantage to him; for those spaces of ground afforded the Jews a place for assaulting the Romans. So he united the hurdles, and at the same time joined one part of the army to the other, which prevented the private excursions of the Jews. 10. And when the bank was now raised, and brought nearer than ever to the battlements that belonged to the walls, Josephus thought it would be entirely wrong in him if he could make no contrivances in opposition to theirs, and that might be for the city's preservation; so he got together his workmen, and ordered them to build the wall higher; and while they said that this was impossible to be done while so many darts were thrown at them, he invented this sort of cover for them: He bid them fix piles, and expand before them the raw hides of oxen newly killed, that these hides by yielding and hollowing themselves when the stones were thrown at them might receive them, for that the other darts would slide off them, and the fire that was thrown would be quenched by the moisture that was in them. And these he set before the workmen, and under them these workmen went on with their works in safety, and raised the wall higher, and that both by day and by night, till it was twenty cubits high. He also built a good number of towers upon the wall, and fitted it to strong battlements. This greatly discouraged the Romans, who in their own opinions were already gotten within the walls, while they were now at once astonished at Josephus's contrivance, and at the fortitude of the citizens that were in the city.