The squadron remained at its anchorage above Profit's Island but a few hours, waiting for the cover of night. Shortly before 10 P. M. it got under way, ranged as follows: Hartford, Richmond, Monongahela, each with her consort lashed alongside, the Mississippi bringing up the rear. Just as they were fairly starting a steamer was seen approaching from down the river, flaring lights and making the loud puffing of the high-pressure engines. The flag-ship slowed down, and the new arrival came alongside with a message from the general that the army was then encamped about five miles in rear of the Port Hudson batteries. Irritated by a delay, which served only to attract the enemy's attention and to assure himself that no diversion was to be expected from the army, the admiral was heard to mutter: "He had as well be in New Orleans or at Baton Rouge for all the good he is doing us." At the same moment the east bank of the river was lit up, and on the opposite point huge bonfires kindled to illumine the scene--a wise precaution, the neglect of which by the enemy had much favored the fleet in the passage of the lower forts. The ships now moved on steadily, but very slowly, owing to the force of the current. At 11 P. M. the Hartford had already passed the lower batteries, when the enemy threw up rockets and opened fire. This was returned not only by the advancing ships, but also by the ironclad Essex and the mortar schooners, which had been stationed to cover the passage. The night was calm and damp, and the cannonade soon raised a dense smoke which settled heavily upon the water, covering the ships from sight, but embarrassing their movements far more than it disconcerted the aim of their opponents. The flag-ship, being in the advance, drew somewhat ahead of the smoke, although even she had from time to time to stop firing to enable the pilot to see. Her movements were also facilitated by placing the pilot in the mizzen-top, with a speaking tube to communicate with the deck, a precaution to which the admiral largely attributed her safety; but the vessels in the rear found it impossible to see, and groped blindly, feeling their way after their leader. Had the course to be traversed been a straight line, the difficulty would have been much less; but to make so sharp a turn as awaited them at the bend was no easy feat under the prevailing obscurity. As the Hartford attempted it the downward current caught her on the port bow, swung her head round toward the batteries, and nearly threw her on shore, her stem touching for a moment. The combined powers of her own engine and that of the Albatross, her consort, were then brought into play as an oarsman uses the oars to turn his boat, pulling one and backing the other; that of the Albatross was backed, while that of the Hartford went ahead strong. In this way their heads were pointed up stream and they went through clear; but they were the only ones who effected the passage.