Mithridates again pursues the Greeks, but is repulsed. They reach the Tigris, encamp at Mespila, and are attacked by Tissaphernes with a numerous force. They repel him, and alter their order of march. Traversing a mountainous part of the country, they are harassed by the enemy, till, on getting possession of a height, they are enabled to reach the plain beyond it in safety.The Greeks arrive at a point where the Carduchian mountains overhang the river, and, as they are still harassed by the enemy, the generals hold a consultation, and determine to march across the mountains.CHAPTER V.