"Perhaps not; the government official, with authority to act, is in New York. I shall see him at once. I have no doubt the detectives have already reported that the Ionian has moved down the river," said Captain Passford, as the tug came up to a pier, where father and son landed.

They went to an office in Battery Place, where the captain was informed that a special messenger had been sent to Bonnydale to acquaint him with the fact that the Ionian had moved down the river. Files of documents, containing reports of detectives and other papers, were examined and compared, and then the government official proceeded to finish the filling out of Captain Chantor's orders. The paper was given to Christy, with an order to deliver it to the commander of the Chateaugay. The tug had been detained for them, and they hastened on board of her.

They found the suspected steamer at her moorings still; but it was evident that she was preparing to weigh her anchor. The tug continued on her course towards the Navy Yard, and the Chateaugay was discovered in the berth she had occupied for the last two weeks. Everything looked lively on board of her, as though she were getting ready to heave up her anchor.

"Christy, you will find on board of your steamer a man by the name of Gilfleur," said Captain Passford, as the tug approached the man-of-war.

"That sounds like a French name," interposed Christy.

"It is a French name, and the owner of it is a Frenchman who has been a detective in Paris. He has accomplished more in this matter than all the others put together, and he will go with you, for you will find in the commander's instructions that you have more than one thing to do on your way to the Gulf. I gave him a letter to you."

"I shall be glad to see him."

"Now, my son, we must part, for I have business on shore, and you may have to sail at any moment," said Captain Passford, as he took the two hands of his son. "I have no advice to give you except to be prudent, and on this duty to be especially discreet. That's all—good-by."

They parted, after wringing each other's hands, as they had parted several times before. They might never meet again in this world, but both of them subdued their emotion, for they were obeying the high and solemn call of duty; both of them were fighting for the right, and the civilian as well as the naval officer felt that it was his duty to lay down his life for his suffering country. Christy mounted the gangway, and was received by Captain Chantor on the quarter-deck. He had been on board before, and had taken possession of his stateroom.

The passenger took from his pocket the files of papers given him by the official on shore; and then he noticed for the first time an envelope addressed to him. The commander retired to his cabin to read his instructions, and Christy went to his stateroom in the ward room to open the envelope directed to him. As soon as he broke the seal he realized that his father had done a great deal of writing, and he had no doubt the paper contained full instructions for him, as well as a history of the difficult case in which he was to take a part. A paper signed by the official informed him that he was expected to occupy a sort of advisory position near the commander of the Chateaugay, though of course he was in no manner to control him in regard to the management of the ship.