"Tell the officer of the deck to call all hands to quarters as quietly as possible," said Frank.

The officer ran below, and the young commander heard the sound again, still faint, but nearer and more distinct than the others. It was well that he had not put off his preparations to receive the rebels, for they were certainly approaching. Presently the pilots came up and took their stations at the wheel, and a moment afterward the executive officer came up and reported the crew ready for action. So quietly had the men been aroused, that Frank had not heard them as they moved to their stations. Nearer and nearer came the sound of oars, and suddenly a large flatboat, crowded with men, loomed up through the darkness.

"On deck, there!" whispered Frank, leaning over the rail and speaking to a sailor on the forecastle. "Slip that anchor."

There was the rattling of a chain as this order was executed, and as the man sprang through one of the ports, a sheet of flame covered the forecastle, and two twenty-four pound shells went crashing and shrieking among the rebels.

The pilots rang the bell for the engineers to "come ahead," and as the Boxer turned out into the river, thus bringing her broadside guns to bear on the boat, two more shells completed the ruin. The rebels were caught in their own trap. Their boat was sinking, half their number either dead or wounded, and all who were able to swim were springing into the water and making for the nearest shore.

It was so dark Frank could not see the havoc that had been made among the guerrillas, and he was about to give them another broadside, when he heard loud cries for quarter. That boat was disposed of, and he turned to look for the other, (for Captain Wilson had said there were two of them,) but it was not to be seen. As he afterward learned, the guerrillas, having been completely deceived as to the force of the Boxer, had crowded sixty men into one boat, thinking that force sufficient to insure an easy victory. After running up the river nearly a mile without seeing any signs of the boat, the Boxer returned to her station, and found the rebel craft hard and fast aground. Her deck was covered with dead and wounded, and Frank at once turned his attention to taking care of the latter. Twenty-three wounded guerrillas were conveyed on board the vessel, and delivered into the charge of the doctor and his steward, together with nearly a dozen prisoners, who, being unable to swim, had not dared to leave the boat. The dead were left where they had fallen. The Boxer then returned to her anchorage, and Frank, feeling safe for the remainder of the night, ordered hammocks to be piped, a command which the sailors gladly obeyed, for their soft mattresses were much more comfortable than the hard deck. By the time every thing had been restored to order, the quarter-master reported the Manhattan approaching. Frank answered her signals, and as she came alongside, Captain Wilson sprang on board.

"How is it, captain?" he inquired, as Frank met him at the gangway. "Mercy!" he exclaimed, as he entered the door and saw the wounded rebels lying in rows on the deck. "Lively while it lasted, wasn't it? How many men have you lost?"

"None, sir," replied Frank. "If the rebels fired a shot at us, I don't know it."

"When I heard the firing," continued the captain, "I was afraid you had neglected to make preparations to receive them, and had got yourself into a bad scrape. But I see you are able to take care of yourself."

The captain then returned on board his vessel, which moved out into the river and came to anchor at a short distance from the Boxer, while Frank retired to his room and fell asleep, well satisfied with his night's work.