Cassius was again much dissatisfied: but he gave over advising Crassus, who was out of humour with him, though Cassius himself abused the barbarian. "What evil dæmon," he said, "vilest of men, brought you to us, and by what drugs and witchcraft have you persuaded Crassus to plunge his army into a boundless wilderness and an abyss, and to pursue a path more fit for a nomadic chief of robbers than for a Roman Imperator?" But the barbarian, who was a cunning follow, with abject servility, prayed him to endure a little longer; and, while running along with the soldiers and giving them his help, he would jeer at them in a laughing mood, and say, "I suppose you think that you are marching through Campania, and you long for the fountains, and streams, and shades, and baths, and taverns? Have you forgotten that you are crossing the confines of the Arabs and Assyrians?" Thus the barbarian amused the Romans, and before his treachery was discovered he rode off, not, however, without the knowledge of Crassus, after making him believe that he would serve the Roman army, and put the affairs of the enemy in confusion. XXIII. It is said that on that day Crassus did not appear, as is the custom of Roman generals, in a purple dress, but in black, which he immediately changed on observing what he had done: and it is also said that the men who carried the standards had much difficulty in raising some of them up, for they stuck in the ground as if they were firmly rooted there. Crassus ridiculed all these omens, and quickened his march, urging the infantry to follow after the cavalry, till at last a few of those who had been sent forward as scouts came up, and reported that the rest of them had been cut off by the enemy, and they had escaped with difficulty, and that the Parthians were advancing with a large force, and full of confidence. This threw all the army into confusion, and Crassus was completely confounded, and began to put his men in order hastily, and with no great presence of mind: at first, as Cassius recommended, he extended the line of the legionary soldiers as far as possible in the plain, and making it of small depth, in order to prevent the enemy from attacking them on the flank, he distributed the cavalry on the wings; but he changed his plan and, drawing his men together, formed them into a deep square of four fronts, with twelve cohorts on each side. By the side of each cohort he placed a body of horse, in order that no part of the army might be without the aid of the cavalry, but might make the attack equally protected on all sides. He gave one of the wings to Cassius, and the other to young Crassus; he himself took his station in the centre. Thus advancing, they came to a stream called Balissus,[70] which was neither large nor copious; but it was a joyful sight to the soldiers in the midst of the drought and heat, and by comparison with the rest of their laborious march through a country without water. Now most of the commanders thought