On the morning of the 16th I came over to the Yazoo to be ready to cooperate with General Grant, leaving two of the iron-clads at Red river, one at Grand Gulf, one at Carthage, three at Warrenton, and two in the Yazoo, which left me a small force. Still I disposed of them to the best advantage. On the 18th, at meridian, firing was heard in the rear of Vicksburg, which assured me that General Grant was approaching the city. The cannonading was kept up furiously for some time, when, by the aid of glasses, I discovered a company of artillery advancing, taking position, and driving the rebels before them. I immediately saw that General Sherman’s division had come on to the left of Snyder’s Bluff, and that the rebels at that place had been cut off from joining the forces in the city. I dispatched the DeKalb, Lieutenant-Commander Walker, the Choctaw, Lieutenant-Commander Ramsay, the Borneo, and Forest Rose, all under command of Lieutenant-Commander Breese, up the Yazoo, to open communication in that way with Generals Grant and Sherman. This I succeeded in doing, and in three hours received letters from Generals Grant, Sherman, and Steele, informing me of this vast success, and asking me to send up provisions, which was at once done. In the mean time, Lieutenant-Commander Walker in the DeKalb pushed on to Haines’s Bluff, which the enemy had commenced evacuating the day before, and a party remained behind in the hopes of destroying or taking away a large amount of ammunition on hand. When they saw the gunboats they ran away and left everything in good order, guns, forts, tents, and equipage of all kinds, which fell into our hands. As soon as the capture of Haines’s Bluff and the fourteen forts was reported to me, I shoved up the gunboats from below to fire on the hill batteries, which fire was kept up for two or three hours. At midnight they moved up to the town and opened on it for about an hour, and continued at intervals during the night to annoy the garrison. On the 19th I placed six mortars in position, with orders to fire night and day as rapidly as they could. The works at Haines’s Bluff are very formidable. There are fourteen of the heaviest kind of mounted eight and ten inch and seven and a half inch rifle guns, with ammunition enough to last a long siege. As the gun carriages might again fall into the hands of the enemy, I had them burned, blew up the magazine, and destroyed the works generally. I also burned up the encampments, which were permanently and remarkably well constructed, looking as though the rebels intended to stay some time. Their works and encampments covered many acres of ground, and the fortifications and rifle pits proper of Haines’s Bluff extend about a mile and a quarter. Such a network of forts I never saw.