was spanned by a boom of logs, which it was necessary to break through
that the vessels might reach the city above. This was done, Porter
protecting the expedition which effected it. When the situation of the
forts became hopeless his demand for their surrender was accepted and an
officer came on board under a flag of truce to complete the
negotiations.

While Porter and his visitor were conversing an officer came forward
with the information that the immense floating battery _Louisiana_, of
four thousand tons burden and carrying sixteen heavy guns, had been set
on fire, as Admiral Cervera did with his ships a generation later, when
his escape was cut off from Santiago.

"Such an act is anything but creditable to you," remarked Porter,
addressing the Confederate commander.

"I am not responsible for the acts of the naval officers," replied the
visitor.

The explanation was reasonable, and without any excitement, Commander
Porter renewed the conversation respecting the surrender, but a few
minutes later the officer again approached.

"The ropes which held the floating battery to the bank have been burned
and she is drifting down stream toward us."

"Are her guns loaded and is there much ammunition aboard?" asked Porter
of the Confederate commander.

"I suppose the guns are loaded, but I know nothing about naval matters