"Mr. Wallace," said Leroy, "this is my friend and partner, Mr. Curtis." The two men bowed and shook hands, and Wallace seating himself proved to be a pleasant and well-informed gentleman.

In the course of the conversation, Leroy asked, "What is the latest news from the front, Mr. Wallace?"

"We have nothing as yet to-day," he answered, "but yesterday it was reported that McClellan had laid siege to Yorktown; the chances are, that we shall hear of a battle, in a few days at farthest." During the interview, Curtis learned also, that the persons operating for this bureau had confederates, both at Baltimore and at Washington; these, he determined to discover, if possible, in addition to the information already gained.

To this end, he made himself very agreeable to Mr. Wallace, and in the course of the conversation, expressed his willingness to do what he could in aiding the force, and remarked that he should be passing back and forth, between Washington and Richmond, and could doubtless be of service.

Mr. Wallace thanked him heartily, and gave him a small plain badge of peculiar shape, that would at any time, if shown, admit him to the headquarters, and then taking him about the room, he introduced him to the gentlemen present, and after a short conversation with his new friends, he in company with Leroy took his departure, and together they went down to dinner.

That evening, as he was sitting in the bar-room of the hotel, one of the men he had met up-stairs in the forenoon, came to him and told him that in a day or two, he was to start for Yorktown with important dispatches for General Magruder, but that owing, to sickness in his family, he did not want to leave home, unless it was impossible for him to get some one he could trust to undertake the task for him.

He then asked Curtis if he would object to making the trip for him. The detective thought a moment, and told him he would give him an answer in the morning. The two men then indulged in a friendly glass, after which they separated. The man had no sooner gone, than Curtis made up his mind to take the dispatches, not to General Magruder, but to me at Washington.

Accordingly, the next morning he informed his friend he would undertake the task for him, as he intended returning to Baltimore at any rate.

The next morning found him, with the dispatches carefully secreted about his person, at the depot, ready to take the first train for Petersburgh.

Here he arrived about noon, and proceeded to call on General Hill. After procuring his dinner at the hotel, he ordered his horse and started on his long ride for the Union camp, where he delivered his dispatches to Mr. Bangs, the superintendent of my headquarters in the field, and forwarded copies of the same to me at Washington, together with a full account of his trip and information he had gained; not forgetting a full statement of his discovery of the "Subterranean Headquarters," and his enlistment as a member of its force of spies and agents, employed in transmitting intelligence of the movements and plans of the Union troops.