To play this trick, you must take one of your friends into your confidence. Borrow a watch and put it in your pocket, and then ask your audience to sit at the end of the room, blindfold your friend, and lead him outside. Now say: 'Ladies and gentlemen, if you will give me some small object to hide, I promise that the blind man will find it, although I shall not even tell him what he is to look for, and I shall lower the gas, so that if the bandage should slip, he will still be unable to see.' A key, pencil, or any small thing having been handed to you, lower the gas and proceed to hide the object, at the end of the room, mentioning where you have put it, but not mentioning that you have placed the watch close beside it. You then request 'Silence' and lead in the blind man and ask him to begin his search. He is guided, of course, by the ticking of the watch, and knows that whatever he finds close to it is the object hidden. When he calls 'Found,' he must slip the watch into his pocket. You then turn up the gas and quietly ask your audience if they do not think your friend is a very clever fellow?