In the years since 1862, Island No. 10, the scene of so much interest and energy, has disappeared. The river, constantly wearing at its upper end, has little by little swept away the whole, and the deep current now runs over the place where the Confederate guns stood, as well as through the channel by which the Carondelet passed. On the other shore a new No. 10 has risen, not standing as the old one, in the stream with a channel on either side, but near a point and surrounded by shoal water. It has perhaps gathered around a steamer, which was sunk by the Confederates to block the passage through a chute then existing across the opposite point. While Walke was protecting Pope's crossing, two other gunboats were rendering valuable service to another army a hundred miles away, on the Tennessee River. The United States forces at Pittsburg Landing, under General Grant, were attacked by the Confederates in force in the early morning of April 6th. The battle continued with fury all day, the enemy driving the centre of the army back half way from their camps to the river, and at a late hour in the afternoon making a desperate attempt to turn the left, so as to get possession of the landing and transports. Lieutenant Gwin, commanding the Tyler, and senior officer present, sent at 1.30 P.M. to ask permission to open fire. General Hurlburt, commanding on the left, indicated, in reply, the direction of the enemy and of his own forces, saying, at the same time, that without reinforcements he would not be able to maintain his then position for an hour. At 2.50 the Tyler opened fire as indicated, with good effect, silencing their batteries. At 3.50 the Tyler ceased firing to communicate with General Grant, who directed her commander to use his own judgment. At 4 P.M. the Lexington, Lieutenant Shirk, arrived, and the two boats began shelling from a position three-quarters of a mile above the landing, silencing the Confederate batteries in thirty minutes. At 5.30 P.M., the enemy having succeeded in gaining a position on the Union left, an eighth of a mile above the landing and half a mile from the river, both vessels opened fire upon them, in conjunction with the field batteries of the army, and drove them back in confusion. The army being largely outnumbered during the day, and forced steadily back, the presence and services of the two gunboats, when the most desperate attacks of the enemy were made, were of the utmost value, and most effectual in enabling that part of our line to be held until the arrival of the advance of Buell's army from Nashville, about 5 P.M., allowed the left to be reinforced and restored the fortunes of the day. During the night, by request of General Nelson, the gunboats threw a shell every fifteen minutes into the camp of the enemy.