Having learned the question, of course the medium can reply to it, giving the name of the spirit addressed; but before doing so, he doubles the two folds made by the inquirer, and, for a show of consistency, again rubs his fingers over the paper. Then more folds and more rubbing--all the folding, additional to the inquirer's, being done to keep the latter from observing, when he comes to read the answer, that it was possible for the medium to read the question through the two folds of paper. The answer is written upon the same strip of paper that accompanies the question. The medium requires the investigator to write his questions each on a different strip of paper; and before answering, he every time manipulates the paper in the way I have described. When rubbing his fingers over the question, he often shuts the eye which is toward the inquirer--which prevents suspicion; but the other eye is open wide enough to enable him to read the question through the paper. Should a person write a test-question, the medium could not answer it correctly even if he did see it. In his "communications" he uses many terms of endearment, and if possible flatters the recipient out of his common-sense, and into the belief that "after all there may be something in it!" Should the inquirer "smell a rat," and take measures to prevent the medium from learning, in the way I have stated, what question is written, he (the medium) gets nervous and discontinues the "sitting," alleging that conditions are unfavorable for spirit-communication. CHAPTER XII. SPIRITUAL "LETTERS ON THE ARM."--HOW TO MAKE THEM YOURSELF.--THE TAMBOURINE AND RING FEATS.--DEXTER'S DANCING HATS.--PHOSPHORESCENT OIL.--SOME SPIRITUAL SLANG. The mediums produce "blood-red letters on the arm" in a very simple way. It is done with a pencil, or some blunt-pointed instrument, it being necessary to bear on hard while the movement of writing is being executed. The pressure, though not sufficient to abrade the skin, forces the blood from the capillary vessels over which the pencil passes, and where, when the reaction takes place, an unusual quantity of blood gathers and becomes plainly visible through the cuticle. Gradually, as an equilibrium of the circulation is restored, the letters pass away. This "manipulation" is generally produced by the medium in connection with the ballot-test. Having learned the name of an investigator's spirit-friend, in the manner stated in a previous article, the investigator is set to writing some other names. While he is thus occupied, the medium quickly slips up his sleeve under the table, and writes on his arm the name he has learned.