Presently a Persian on horseback rode up to reconnoiter the pass. He could not see over the wall, but in front of it and on the ramparts, he saw the Spartans, some of them engaged in active sports, and others in combing their long hair. He rode back to the king, and told him what he had seen. Now Xerxes had in his camp an exiled Spartan prince, named Demaratus, who had become a traitor to his country, and was serving as counselor to the enemy. Xerxes sent for him, and asked whether his countrymen were mad to be thus employed instead of fleeing away; but Demaratus made answer that a hard fight was no doubt in preparation, and that it was the custom of the Spartans to array their hair with especial care when they were about to enter upon any great peril. Xerxes would, however, not believe that so petty a force could intend to resist him, and waited four days, probably expecting his fleet to assist him, but as it did not appear, the attack was made. The Greeks, stronger men and more heavily armed, were far better able to fight to advantage than the Persians with their short spears and wicker shields, and beat them off with great ease. It is said that Xerxes three times leapt off his throne in despair at the sight of his troops being driven backwards; and thus for two days it seemed as easy to force a way through the Spartans as through the rocks themselves. Nay, how could slavish troops, dragged from home to spread the victories of an ambitious king, fight like freemen who felt that their strokes were to defend their homes and children? That evening a wretched man, named Ephialtes, crept into the Persian camp, and offered, for a great sum of money, to show the mountain path that would enable the enemy to take the brave defenders in the rear! A Persian general, named Hydarnes, was sent off at nightfall with a detachment to secure this passage, and was guided through the thick forests that clothed the hill-side. In the stillness of the air, at daybreak, the Phocian guards of the path were startled by the crackling of the chestnut leaves under the tread of many feet. They started up, but a shower of arrows was discharged on them, and forgetting all save the present alarm, they fled to a higher part of the mountain, and the enemy, without waiting to pursue them, began to descend. As day dawned, morning light showed the watchers of the Grecian camp below a glittering and shimmering in the torrent bed where the shaggy forests opened; but it was not the sparkle of water, but the shine of gilded helmets and the gleaming of silvered spears. Moreover, a man crept over to the wall from the Persian camp with tidings that the path had been betrayed, that the enemy were climbing it, and would come down beyond the Eastern Gate. Still, the way was rugged and circuitous, the Persians would hardly descend before midday, and there was ample time for the Greeks to escape before they could thus be shut in by the enemy.