"SIR,--A few years ago Mr. and Mrs. Baldwin gave the following entertainment in almost every large town in the three kingdoms. The public were invited to write any question or questions they desired to have answered on a piece of paper, to place it in their pockets, and keep it there without communicating its contents to anyone, and then when they went to the hall their names were called out and their question answered without the papers leaving their possession. About fifty such inquiries were answered each evening without a single failure by Mrs. Baldwin, who sat blindfolded with her back to the audience. From my experience and that of my friends, collusion was impossible, and the only way of accounting for the performance was by thought transference or telepathy between Mrs. Baldwin and those of the audience with whom she was in mental sympathy. (Signed) "C. A. M." Commenting on this letter, I wrote to _Light_, and my communication appeared the following week. It was to this effect:-- "Under the heading of 'Thought Transference,' your correspondent, C. A. M., gives an account of some entertainments by Mr. and Mrs. Baldwin, at which he says" (I here quoted from C. A. M.'s letter, and then continued as follows):--"I never was present at entertainments given by Mr. and Mrs. Baldwin, and therefore cannot express an opinion as to the _modus operandi_ in their particular case, but I would point out that their entertainments bear a close resemblance to those given by conjurers. The explanation of the mystery in a conjurer's case is as follows:--The conjurer asks members of the audience to write their questions secretly, to sign their names at the bottom of the question, and then to fold the pieces of paper on which the questions are written and place them in their pockets. To facilitate the writing he hands pencils round and tablets upon which to rest the pieces of paper during the writing of the questions, or the members of the audience, if they so wish, can retire into an adjoining room and write their questions on a table. The tablets and pencils are then collected by an assistant who is a confederate, who then retires from the hall to the room where the table is. The tablets and table have false surfaces of leather or other material, which, on being removed by the confederate, disclose a layer of carbon paper resting on another of white paper upon which the questions have been recorded unknown to the inquirers. The confederate then proceeds to read the questions with their respective attached signatures, and to communicate them to the blindfolded medium by an electrical apparatus upon which the medium's foot rests, or by other mechanical means."