marched at night when it was cooler and dug wells which had bitter water. He saved his men, but some horses and pack animals died of thirst. Then he passed through the territory of the Caucaei who had broken the treaty with Rome and declared that they could return safely to their homes. He returned to the Numantine territory and was joined by Jugurtha, the son of the king of Numidia, with archers, slingers, and twelve elephants. Eventually, Scipio prepared to besiege Numantia. He asked the allied tribes in Hispania for specified numbers of troops. He built a circuit of fortifications which was nine kilometers long. The wall was three meters high and two and a half meters wide. He built an embankment of the same dimensions as the wall around the adjoining marsh. He built two towers by the River Durius (Douro) to which he moored large timbers with ropes which were full of knives and spear heads and were constantly kept in motion by the current. This prevented the enemy from slipping through covertly. He managed to force Numantia into starvation. The Numantines surrendered. Some killed themselves. Scipio sold the rest into slavery, destroyed the city and kept fifty men for his triumph. For his success Scipio Aemilianus received the additional agnomen of "Numantinus". Political career Censorship In 142 BC Scipio Aemilianus was a censor. During his censorship, he endeavoured to check the growing luxury and immorality of the period. In 139 BC, he was unsuccessfully accused of high treason by Tiberius Claudius Asellus, whom he had degraded when censor. The speeches he gave on that occasion (now lost) were considered brilliant. Tiberius Gracchus Scipio helped his relative Tiberius Gracchus who in 137 BC had served in the Numantine War as a quaestor (treasurer) under the consul Gaius Hostilius Mancinus. The consul was pinned down by the enemy and, unable to escape, made a peace treaty. Tiberius negotiated the peace terms. The treaty was rejected by the senate as a disgrace. Plutarch wrote that "the relatives and friends of the soldiers, who formed a large part of the people" blamed this on Mancinus and insisted "that it was due to Tiberius that the lives of so many citizens had been saved". Those who disagreed with the violation of the treaty "cast forth those who had taken hand and share in the treaty, as for instance the quaestors and