Lieut.-Colonel Baillie had passed the river in his way on the afternoon of the 5th of September, and encamped for the night. Hyder, on receiving this information, made the movement before related, and other arrangements on the following morning, the 6th of September, and Sir Hector Munro changed his own position at the same time. This change was scarcely effected when the evident bustle in the enemy’s army explained its purpose. In fact the purport of Hyder’s movement was to cover and support a great attack at that moment making on Lieut.-Colonel Baillie’s detachment. He had already sent his brother-in-law, Meer Saib, with eight thousand horse upon that service, and immediately afterwards detached his son, Tippoo Saib, with six thousand infantry, eighteen thousand cavalry, and twelve pieces of cannon, to join in a united and decisive attack. They encountered Lieut.-Colonel Baillie at a place called Perambaukum, where he made the most masterly dispositions to withstand this vast superiority of force. After an exceedingly severe and well-fought action, of several hours’ continuance, the enemy was routed, and Lieut.-Colonel Baillie gained as complete a victory as a total want of cavalry and the smallness of his numbers could possibly admit. Through these circumstances he lost his baggage. His whole force did not exceed two thousand sepoys, and from one to two companies of European artillery. This success, however, by diminishing Lieut.-Colonel Baillie’s force, only added to his distress. The British camp was within a few miles, but Hyder’s army lay full in his way, and he was, moreover, in the greatest want of provisions. Under these circumstances, Lieut.-Colonel Baillie despatched a messenger to Major-General Sir Hector Munro, with an account of his situation, stating that he had sustained a loss which rendered him incapable of advancing, while his total want of provisions rendered it equally impossible for him to remain in his present position. A council of war being held, at which Colonel Lord Macleod assisted, it was resolved to send a reinforcement to Lieut.-Colonel Baillie, to enable him to push forward in despite of the enemy. Lieut.-Colonel Fletcher, Captain Baird, and other officers were sent off with a strong detachment to the relief of Lieut.-Colonel Baillie. The main force of this detachment consisted of the flank companies of the first battalion of the _Seventy-third_, afterwards numbered the SEVENTY-FIRST regiment, the light company being commanded by Captain Baird. There were two other companies of European grenadiers, one company of sepoy marksmen, and ten companies of sepoy grenadiers. In all about a thousand men. The junction was effected with some difficulty on the 9th of September, and the following day was appointed for the march of the united detachment. Accordingly, day-light had scarcely broken when it commenced its march. By seven o’clock in the morning of the 10th of