In the meantime, Gen. Atkinson arrived with his regulars and the brigades of Generals Posey and Alexander; and on the 28th of July, took up the line of march with Gen. Atkinson at the head. Their route led through a mountainous country for several days, as the Indiana seemed to have selected the most difficult route they could find in order to gain time, and reach the river in advance, and then secure the best possible positions to defend themselves. Having learned from an old Indian that had been left behind, that the enemy was only a short distance ahead, Gen. Atkinson, on breaking camp at an early hour in the morning, gave orders for the march towards the river, with Gen. Dodge's squadron in front; Infantry next; Second brigade, under command of Gen. Alexander, next; Gen. Posey's brigade next, and Gen. Henry's in the rear. After marching a few miles Gen. Dodge's scouts discovered the rear guard of the enemy, when an express was sent immediately to Gen. Atkinson, who ordered troops to proceed at double quick. In the meantime Gen. Dodge's command pushed forward and opened a heavy fire, from which many Indians were shot down while retreating toward the Mississippi, where their main body was stationed. Dodge's squadron being in the lead, were first to open upon the main army of the Indians, whilst Gen. Henry's brigade, that had been placed in the rear in the morning, came first to his aid. The battle waged furiously for more than two hours, and until the last visible Indian warrior was killed. The Indians had commenced crossing before the battle opened, and a number took to their canoes and made good their escape as the battle progressed. The number killed was estimated at something over one hundred, but the Indians afterward reported their loss at seventy-eight killed and forty-two wounded. Our loss was seventeen killed and about the same number wounded. During the engagement several squaws were killed accidentally and a number wounded, including children, who were taken prisoners. Among the latter, Dr. Philleo reported a boy with one arm badly broken, who exhibited a greater degree of stoicism during the operation of amputation, than he had ever before witnessed. Being very hungry, they gave him a piece of bread to eat, which he ravenously masticated during the entire operation, apparently manifesting no pain whatever from the work of the surgeon. Many of the Indians who got across the river in safety were afterwards killed by the Menomonees. STEAMBOAT WARRIOR'S FIGHT.