"I cannot tell, for I cannot perceive the subject on which you are writing. I think you are, however, for the light ahead seems so clear." After a pause she added,-- "You are making one mistake. You think that you are doing it all yourself. But you are not. You are constantly guided by a great spirit." "Who is he?" was asked, with all the greater interest because the gentleman _was_ writing a book, and, like every other author, felt that he had perceived "a great light;" moreover, if he was sure of anything connected with it, he was sure that he was doing it himself, without the aid of any spirit or spirits. "Give me the name of my spirit friend and guide," he added. "I cannot do that to-day," she replied, with the true commercial instinct of the professional medium; "come to-morrow, and I will try to give you the name." Accordingly, the same party visited her the next day, when she made every effort to obtain the name, but without success. It should be stated here that the lady was a slate-writing medium. Communication after communication was written, but without signature, and all efforts to obtain the name were futile. Finally the gentleman said, in an aside apparently not intended for the ears of the medium, "I think I know who it is. It must be either A B [naming a living friend in Washington], or my brother, C D [giving his own name]," for he had no brother, living or dead. Immediately a communication was written out, signed by the supposed spirit brother, announcing the fact that he, and he alone, was the inspiring power in charge of the literary work named, that he was the "guardian spirit" of the gentleman, over whom he was "constantly watching," etc. The emotions created by the affecting terms of the communication can be imagined when it is stated that all present, save the medium, knew that the name was that of the sitter, and that he never had a brother. But these emotions quickly gave place to wonder and admiration when it was discovered that the signature was an almost exact reproduction of his own, with all its salient peculiarities faithfully reproduced.