Let me throw in a word or two of explanation concerning that boy and his performances. It turned out that he was a ravenous devourer of dime novels and sensation-story papers—therefore, dark mysteries and gaudy heroisms were just in his line. Then he had read newspaper reports of the stealthy goings and comings of rebel spies in our midst, and of their lurid purposes and their two or three startling achievements, till his imagination was all aflame on that subject. His constant comrade for some months had been a Yankee youth of much tongue and lively fancy, who had served for a couple of years as “mud clerk” (that is, subordinate purser) on certain of the packet-boats plying between New Orleans and points two or three hundred miles up the Mississippi—hence his easy facility in handling the names and other details pertaining to that region. Now I had spent two or three months in that part of the country before the war; and I knew just enough about it to be easily taken in by that boy, whereas a born Louisianian would probably have caught him tripping before he had talked fifteen minutes. Do you know the reason he said he would rather die than explain certain of his treasonable enigmas? Simply because he _couldn’t_ explain them!—they had no meaning; he had fired them out of his imagination without forethought or afterthought; and so, upon sudden call, he wasn’t able to invent an explanation of them. For instance, he couldn’t reveal what was hidden in the “sympathetic ink” letter, for the ample reason that there wasn’t anything hidden in it; it was blank paper only. He hadn’t put anything into a gun, and had never intended to—for his letters were all written to imaginary persons, and when he hid one in the stable he always removed the one he had put there the day before; so he was not acquainted with that knotted string, since he was seeing it for the first time when I showed it to him; but as soon as I had let him find out where it came from, he straightway adopted it, in his romantic fashion, and got some fine effects out of it. He invented Mr. “Gaylord;” there wasn’t any 15 Bond Street, just then—it had been pulled down three months before. He invented the “Colonel;” he invented the glib histories of those unfortunates whom I captured and confronted with him; he invented “B. B.;” he even invented No. 166, one may say, for he didn’t know there _was_ such a number in the Eagle Hotel until we went there. He stood ready to invent anybody or anything whenever it was wanted. If I called for “outside” spies, he promptly described strangers whom he had seen at the hotel, and whose names he had happened to hear. Ah, he lived in a gorgeous, mysterious, romantic world during those few stirring days, and I think it was _real_ to him, and that he enjoyed it clear down to the bottom of his heart.