The intention was to silence the works by the fleet, after which the army was to cross in transports, under cover of the gunboats, and carry the place by storm. The orders prescribing the manner of attack were issued by the admiral on the 27th. On the 29th, at 7 A.M., the fleet got under way, the Pittsburg leading; her commander, Lieutenant Hoel, a volunteer officer, being himself a pilot for the Mississippi, obtained the honor of leading through his local knowledge. The Louisville, Carondelet, and Mound City followed in the order named, firing upon the upper fort so long as their guns bore, but passing by it to attack the lower work, which was allotted to them. The Pittsburg rounded to as she reached her station, keeping up her fire all the time, and took position close into the bank with her head up stream. The Louisville, following the Pittsburg's motions, passed her, rounded to and took her station immediately astern. The Carondelet and Mound City successively performed the same manoeuvre. All four then went into close action with the lower fort, at the same time directing any of their guns that would bear upon other points of the works. The remaining vessels, Lafayette, Tuscumbia, and flag-ship Benton, followed the first four, but rounded to above the town to engage the upper fort; the Lafayette taking position at first in an eddy of the river, and using her two stern guns, 100-pound rifles. The Benton and Tuscumbia fought their bow and starboard guns; all the vessels keeping under way during the engagement, and being at times baffled by the eddies in the stream. At eleven o'clock, the admiral signalled the Lafayette to change her position to the lower battery, which she did. About eleven, a shot came into the Benton's pilot-house, wounding the pilot and shattering the wheel. The vessel was for a moment unmanageable, got into an eddy, and was carried down three-quarters of a mile before she could again be brought under control; but her place was promptly supplied by the Pittsburg, which had just moved up with that division of the fleet, the lower fort being silenced. The whole squadron now concentrated its fire upon the Point of Rocks battery, keeping under way, and from the difficulties of the stream and the eddying current, at varying ranges. The Lafayette took again her position in the eddy to the north of the battery. Half an hour after noon, the Tuscumbia's port engine was disabled, and being unable to stem the stream with her screws, she was compelled to drop down below Grand Gulf. The action was continued vigorously until 1 P.M., when the enemy's fire, which had not been silenced in the upper fort, slackened materially. The admiral then passed up the river to consult with Grant, who had seen the fight from the deck of a tug and realized, as did Porter, that the works had proved themselves too high and too strong to be taken from the water side. He therefore decided to land