they granted the enjoyment of the profits of the land to the inhabitants of some of the waterless districts for five generations, on condition of their bringing fresh water in; and that, there being many large streams flowing down Mount Taurus, these people at infinite toil and expense constructed these underground channels through a long tract of country, in such a way, that the very people who now use the water are ignorant of the sources from which the channels are originally supplied.

When, however, Arsaces saw that Antiochus was determined to attempt to cross the desert, he endeavoured at once to choke up and spoil the wells.Antiochus prepares to cross it: Arsaces orders the wells to be choked. But King Antiochus, upon this being reported to him, despatched Nicomedes with a thousand horse; who found that Arsaces had retired with his main army, but came upon some of his cavalry in the act of choking up the shafts which went down into the underground channels. They promptly attacked these men, and, having routed and forced them to fly, returned back again to Antiochus.Antiochus arrives at Hecatompylos. The king, having thus accomplished the journey across the desert, arrived before the city Hecatompylos, which is situated in the centre of Parthia, and derives its name from the fact that the roads which lead to all the surrounding districts converge there.

29. Having rested his army at this place, and having convinced himself that, had Arsaces been able to give him battle, he would not have abandoned his own country, nor have sought a ground more favourable to his own armyAntiochus determines to follow Arsaces into Hyrcania. for fighting him than the district round Hecatompylos; he concluded that, since he had done so, it stood to reason that he had entirely changed his mind. He therefore decided to advance into Hyrcania. But having arrived at Tagae, he learnt from the natives that the country he had to cross, until he reached the ridges of Mount Labus sloping down into Hyrcania, was exceedingly rough and difficult, and that large numbers of barbarians were stationed at the narrowest points. He therefore resolved to divide his light-armed troops into companies, and distribute their officers among them, giving them directions as to the route they were severally to take. He did the same with the pioneers, whose business it was to make the positions occupied by the light-armed possible of approach for the phalanx and beasts of burden. Having made these arrangements, he entrusted the first division to Diogenes, strengthening him with bowmen and slingers and some mountaineers skilled in throwing javelines and stones, and who, without keeping any regular order, were always ready to skirmish at a moment’s notice, and in any direction, and rendered the most effective assistance at the narrow passes. Next to these he ordered a company of about two thousand Cretans armed with shields to advance, under the command of Polyxenidas of Rhodes. The rear was to be brought up by companies armed with breastplate and shield, and commanded by Nicomedes of Cos, and Nicolaus the Aetolian.

30. But as they advanced, the ruggedness of the ground and the narrowness of the passes were found to far exceed the king’s expectations.The ascent of Mount Labus. The length of the ascent was altogether about three hundred stades; and a great part had to be made up the bed of a winter torrent of great depth, into which numerous rocks and trees had been hurled by natural causes from the overhanging precipices, and made a passage up it difficult, to say nothing of the obstacles which the barbarians had helped to construct expressly to impede them. These latter had felled a large number of trees and piled up heaps of huge rocks; and had besides occupied all along the gully the high points, which were at once convenient for attack and capable of covering themselves; so that, if it had not been for one glaring error on their part, Antiochus would have found the attempt beyond his powers, and would have desisted from it. The error was this. They assumed that the whole army would be obliged to march the entire way up the gully, and they accordingly occupied the points of vantage. But they did not perceive this fact, that, though the phalanx and the baggage could not possibly go by any other route than the one they supposed, there was yet nothing to make it impossible for the light-armed and active troops to accomplish the ascent of the bare rocks. Consequently, as soon as Diogenes had come upon the first outpost of the enemy, he and his men began climbing out of the gully, and the affair at once took a different aspect. For no sooner had they come to close quarters, than, acting on the suggestion of the moment, Diogenes avoided the engagement by ascending the mountains that flanked the enemy’s position, and so got above him; and by pouring down volleys of darts and stones he seriously harassed the barbarians. Their most deadly weapons however proved to be the slings, which could carry a great distance; and when by these means they had dislodged the first outpost and occupied their position, an opportunity was secured for the pioneers to clear the way and level it, without being exposed to danger. Owing to the number of hands the work went on rapidly; and meanwhile the slingers, bowmen, and javelin-men advanced in skirmishing order along the higher ground, every now and then reforming and seizing on strong points of vantage; while the men with shields formed a reserve, marching in order and at a regular pace along the side of the gully itself. The barbarians thereupon abandoned their positions, and, ascending the mountain, mustered in full force on the summit.

31. Thus Antiochus effected this ascent without loss, but slowly and painfully,The battle on the summit of Mount Labus. for it was not until the eighth day that his army made the summit of Labus. The barbarians being mustered there, and resolved to dispute his passage, a severe engagement took place, in which the barbarians were eventually dislodged, and by the following manoeuvre. As long as they were engaged face to face with the phalanx, they kept well together and fought desperately; but before daybreak the light-armed troops had made a wide circuit, and seized some high ground on the rear of the enemy, and as soon as the barbarians perceived this they fled in a panic. King Antiochus exerted himself actively to prevent a pursuit, and caused a recall to be sounded, because he wished his men to make the descent into Hyrcania, without scattering, and in close order.He reaches Tambrax. He accomplished his object: reached Tambrax, an unwalled city of great size and containing a royal palace, and there encamped. Most of the natives fled from the battle-field, and its immediate neighbourhood,Capture of Sirynx. into a city called Sirynx, which was not far from Tambrax, and from its secure and convenient situation was considered as the capital of Hyrcania. Antiochus therefore determined to carry this town by assault; and having accordingly advanced thither, and pitched his camp under its walls, he commenced the assault. The operation consisted chiefly of mining under pent-houses. For the city was defended by three trenches, thirty cubits broad and fifteen deep, with a double vallum on the edge of each; and behind these there was a strong wall. Frequent struggles took place at the works, in which neither side were strong enough to carry off their killed and wounded: for these hand-to-hand battles took place, not above ground only, but underground also in the mines. However, owing to the numbers employed and the activity of the king, it