In the river near Pittsburg Landing, where the Federal transports lay, were two small gunboats, and what they did during the battle of April 6th makes a separate chapter in the action. In the early morning they were out of sight, though within sound of the continuous firing. How the battle was going, however, was evident. The masses of the blue-clad troops appeared through the trees on the river bank, showing that under the continuous and fierce assaults they were falling back upon the Landing. The _Tyler_, commanded by Lieutenant Gwin, and afterward the _Lexington_, commanded by Lieutenant Shirk, which arrived at four o'clock, strove to keep the Confederate army from the Landing. After the surrender of Prentiss, General Withers set his division in motion to the right toward this point. Chalmers' and Jackson's brigades marched into the ravine of Dill's Branch and into the range of the Federal gunboats and batteries which silenced Gage's battery, the only one Withers had, and played havoc with the Confederate skirmishers. All the rest of the afternoon, until nightfall, the river sailors kept up their continuous bombardment, and in connection with the field batteries on the bank checked General Withers' desperate attempt on the Landing. The dauntless brigade of Chalmers, whose brave Southerners held their ground near the foot of the ravine and maintained the conflict after the battle was ended elsewhere, was swept by the gunboats' fire. When Buell's army, that had been hurrying up to Grant's assistance, reached the battle-field, Gwin sent a messenger ashore in the evening to General Nelson, who had just arrived, and asked in what manner he could now be of service. It was pitch dark; except for the occasional firing of the pickets the armies were resting after the terrific combat. In reply to Gwin's inquiry, General Nelson requested that the gunboats keep on firing during the night, and that every ten minutes an 8-inch shell should be launched in the direction of the Confederate camp. With great precision Gwin followed out this course. Through the forest the shells shrieked and exploded over the exhausted Confederates, showering branches and limbs upon them where they slept, and tearing great gashes in the earth. The result was that they got little rest, and rest was necessary. Slowly a certain demoralization became evident--results that bore fruit in the action that opened on the morrow. Here we see pictured--in the lower part of the page--the captain's gig and crew near the _Lexington_, ready to row their commander out into the stream. [Illustration: THE _LEXINGTON_] [Illustration] [Illustration: FOURTEENTH IOWA VETERANS AT LIBBY PRISON, RICHMOND, IN 1862, ON THEIR WAY TO FREEDOM COPYRIGHT, 1911, REVIEW OF REVIEWS CO.]