When he had made all the necessary preparations the army began to embark at the approach of the dawn; while according to custom he offered sacrifice to the gods and to the river Hydaspes, as the prophets directed.[736] When he had embarked he poured a libation into the river from the prow of the ship out of a golden goblet, invoking the Acesines as well as the Hydaspes, because he had ascertained that it is the largest of all the rivers which unite with the Hydaspes, and that their confluence was not far off. He also invoked the Indus, into which the Acesines flows after its junction with the Hydaspes. Moreover he poured out libations to his forefather Heracles, to Ammon,[737] and the other gods to whom he was in the habit of sacrificing, and then he ordered the signal for starting seawards to be given with the trumpet. As soon as the signal was given they commenced the voyage in regular order; for directions had been given at what distance apart it was necessary for the baggage vessels to be arranged, as also for the vessels conveying the horses and for the ships of war; so that they might not fall foul of each other by sailing down the channel at random. He did not allow even the fast-sailing ships to get out of rank by outstripping the rest. The noise of the rowing was never equalled on any other occasion, inasmuch as it proceeded from so many ships rowed at the same time; also the shouting of the boatswains giving the time for beginning and stopping the stroke of the oars, and the clamour of the rowers, when keeping time all together with the dashing of the oars, made a noise like a battle-cry. The banks of the river also, being in many places higher than the ships, and collecting the sound into a narrow space, sent back to each other an echo which was very much increased by its very compression. In some parts too the groves of trees on each side of the river helped to swell the sound, both from the solitude and the reverberation of the noise. The horses which were visible on the decks of the transports struck the barbarians who saw them with such surprise that those of them who were present at the starting of the fleet accompanied it a long way from the place of embarkation. For horses had never before been seen on board ships in the country of India; and the natives did not call to mind that the expedition of Dionysus into India was a naval one. The shouting of the rowers and the noise of the rowing were heard by the Indians who had already submitted to Alexander, and these came running down to the river’s bank and accompanied him singing their native songs. For the Indians have been eminently fond of singing and dancing since the time of Dionysus and those who under his bacchic inspiration traversed the land of the Indians with him.[738] CHAPTER IV. VOYAGE DOWN THE HYDASPES INTO THE ACESINES.