By following the course of the Tigris to its mouth it would have had to skirt the coast of Elam for a considerable distance, and would inevitably have aroused the suspicions of Khalludush; the passage of such a strong squadron must have revealed to him the importance of the enterprise, and put him on his guard. The vessels therefore stayed their course at Upi, where they were drawn ashore and transported on rollers across the narrow isthmus which separates the Tigris from the Arakhtu canal, on which they were then relaunched. Either the canal had not been well kept, or else it never had the necessary depth at certain places; but the crews managed to overcome all obstacles and rejoined their comrades in due time. Sennacherib was ready waiting for them with all his troops--foot-soldiers, charioteers, and horsemen--and with supplies of food for the men, and of barley and oats for the horses; as soon as the last contingent had arrived, he gave the signal for departure, and all advanced together, the army marching along the southern bank, the fleet descending the current, to the little port of Bab-Salimeti, some twelve miles below the mouth of the river.* * The mouth of the Euphrates being at that time not far from the site of Kornah, Bab-Salimeti, which was about twelve miles distant, must have been somewhere near the present village of Abu-Hatira, on the south bank of the river. There they halted in order to proceed to the final embarcation, but at the last moment their inexperience of the sea nearly compromised the success of the expedition. Even if they were not absolutely ignorant of the ebb and flow of the tide, they certainly did not know how dangerous the spring tide could prove at the equinox under the influence of a south wind. The rising tide then comes into conflict with the volume of water brought down by the stream, and in the encounter the banks are broken down, and sometimes large districts are inundated: this is what happened that year, to the terror of the Assyrians. Their camp was invaded and completely flooded by the waves; the king and his soldiers took refuge in haste on the galleys, where they were kept prisoners for five days "as in a huge cage." As soon as the waters abated, they completed their preparations and started on their voyage. At the point where the Euphrates enters the lagoon, Sennacherib pushed forward to the front of the line, and, standing in the bows of his flag-ship, offered a sacrifice to Ea, the god of the Ocean. Having made a solemn libation, he threw into the water a gold model of a ship, a golden fish, and an image of the god himself, likewise in gold; this ceremony performed, he returned to the port of Bab-Salimeti with his guard, while the bulk of his forces continued their voyage eastward. The passage took place without mishap, but they could not disembark on the shore of the gulf itself, which was unapproachable by reason of the deposits of