d. Even spies could not get
near him, on account of the undergrowth and overflowed lands.
Suspicions of some mysterious movements were aroused. Our river guards
discovered one day a small skiff moving quietly and mysteriously up the
river near the east shore, from the direction of Vicksburg, towards the
fleet. On overhauling the boat they found a small white flag, not much
larger than a handkerchief, set up in the stern, no doubt intended as a
flag of truce in case of discovery. The boat, crew and passengers were
brought ashore to me. The chief personage aboard proved to be Jacob
Thompson, Secretary of the Interior under the administration of
President Buchanan. After a pleasant conversation of half an hour or
more I allowed the boat and crew, passengers and all, to return to
Vicksburg, without creating a suspicion that there was a doubt in my
mind as to the good faith of Mr. Thompson and his flag.

Admiral Porter proceeded with the preparation of the steamers for their
hazardous passage of the enemy's batteries. The great essential was to
protect the boilers from the enemy's shot, and to conceal the fires
under the boilers from view. This he accomplished by loading the
steamers, between the guards and boilers on the boiler deck up to the
deck above, with bales of hay and cotton, and the deck in front of the
boilers in the same way, adding sacks of grain. The hay and grain would
be wanted below, and could not be transported in sufficient quantity by
the muddy roads over which we expected to march.

Before this I had been collecting, from St. Louis and Chicago, yawls and
barges to be used as ferries when we got below. By the 16th of April
Porter was ready to start on his perilous trip. The advance, flagship
Benton, Porter commanding, started at ten o'clock at night, followed at
intervals of a few minutes by the Lafayette with a captured steamer, the
Price, lashed to her side, the Louisville, Mound City, Pittsburgh and
Carondelet--all of these being naval vessels. Next came the transports
--Forest Queen, Silver Wave and Henry Clay, each towing barges loaded
with coal to be used as fuel by the naval and transport steamers when
below the batteries. The gunboat Tuscumbia brought up the rear. Soon
after the start a battery between Vicksburg and Warrenton opened fire
across the intervening peninsula, followed by the upper batteries, and
then by batteries all along the line. The gunboats ran up close under
the b