How the war against Pôros was conducted he has described in his own letters. He tells us that the river Hydaspês ran between the two camps, and that Pôros with his elephants which he had posted with their heads towards the stream, constantly guarded the passage. Alexander himself, day after day, caused a great noise and disturbance to be made in his camp, in order that the barbarians might be gradually led to view his movements without alarm. At last, upon a dark and stormy night, he took a part of the infantry and a choice body of cavalry, marched to a considerable distance from the enemy, and crossed over to an island of no great size. Here he was exposed with his army to the rage of a violent thunderstorm, amid which rain fell down in torrents, and though he saw some of his men struck dead with the lightning, he nevertheless advanced from the island and reached the furthermost bank of the river. The Hydaspês was now flooded by the rains, and its raging current had chosen a new channel of great width, down which a great body of water was carried. In fording this new bed, he could with difficulty keep his footing, as the bottom was very slippery and uneven. It was here that Alexander is said to have exclaimed, “O Athenians! can you believe what dangers I undergo to earn your applause?” This particular rests on the authority of Onesikritos, for Alexander himself merely says that he and his men left their rafts, and under arms waded through the second torrent with the water up to their breasts. After crossing, he himself rode forward about twenty stadia in advance of the infantry, concluding that if the enemy attacked him with their cavalry only, he could easily rout them; but if they moved forward their entire force, he could bring his infantry into the field before fighting began. He was right in both conclusions, for he fell in with 1000 horse and 60 war-chariots of the enemy, and these he routed, capturing every chariot, and slaying 400 of the horsemen. Pôros thus perceived that Alexander himself had crossed the river, and he therefore advanced against him with all his army, except some troops which he left to guard his camp, in case the Macedonians should cross from the opposite bank to attack it. Alexander, dreading the elephants and the great numbers of the enemy, did not engage with them in front, but attacked them himself on the left wing, ordering Koinos to fall upon them on the right. Both wings were broken, and the enemy, driven from their position, thronged always towards the centre where the elephants were posted. The contest, which began early in the morning, was so obstinately maintained that it was fully the eighth hour of the day before the Indians renounced all attempts at further resistance. This description of the battle is given by the chief actor in it himself in his letters. Most historians are agreed that Pôros stood four cubits and a span high, and that his gigantic form was not