this, many who were still clinging to the city, doubtful as to the side they would take, go away to Pompey. But Cæsar at last manages to make Ilerda too hot for the Pompeian generals. He takes his army over one river in coracles, such as he had seen in Britain; he turns the course of another; fords a third, breaking the course of the stream by the bulk of his horses; and bridges a fourth. Afranius and Petreius find that they must leave Ilerda, and escape over the Ebro among the half-barbarous tribe further south, and make their way, if possible, among the Celtibri,—getting out of Aragon into Castile, as the division was made in after-ages. Cæsar gives us as one reason for this intended march on the part of his enemies, that Pompey was well known by those tribes, but that the name of Cæsar was a name as yet obscure to the barbarians. It was not, however, easy for Afranius to pass over the Ebro without Cæsar's leave, and Cæsar will by no means give him leave. He intercepts the Pompeians, and now turns upon them that terrible engine of want from which he had suffered so much. He continues so to drive them about, still north of the Ebro, that they can get at no water; and at last they are compelled to surrender.
During the latter days of this contest the Afranians, as they are called—Roman legionaries, as are the soldiers of Cæsar—fraternise with their brethren in Cæsar's camp, and there is something of free intercourse between the two Roman armies. The upshot is that the soldiers of Afranius resolve to give themselves up to Cæsar, bargaining, however, that their own generals shall be secure. Afranius is willing enough; but his
