You should instruct the Transmitter, along the lines indicated in a previous chapter, i.e. that he must hold the thought of _direction_, fix his eyes on the chosen spot and then _concentrate his will_ upon it, and that your success will depend materially upon _his ability to concentrate his Mind and Will upon the task_. You should explain to him that you receive your impulses through his thought-waves or vibrations, and that the stronger these are, the better you will succeed. Make this plain to him. When the Transmitter fails to concentrate his Will, you will know it at once, and should call his attention to it, saying "Concentrate, concentrate now--_harder_--use your _Will_," or words to that effect. You should impress upon the Transmitter that it is the _strength of his Will_ that produces the mental vibrations that give you the impressions. BEGINNING THE TEST. Then, take the hand of the Transmitter, in the manner already described in previous lesson, placing it to your forehead, or else holding it up high in front of you. Then begin a wavering motion, or direction, preferably describing a circle, slowly. In this meaningless wavering motion remain perfectly passive awaiting impressions. Soon you will begin to feel a mental resistance to certain directions, and a mental willingness that you move in another direction. Then move along the line of the least mental resistance. In some cases you will receive a strong _mental urge_, _pull_, or _push_, in the direction of the selected spot. Here is where your practice comes in, for in your practice experiments you have acquired the art of recognizing these impressions as they come to you, in their different forms, and so are prepared to yield to them and move accordingly. It is impossible to describe in writing just how these impressions come, and feel like, for actual experience is necessary before you will know just what is meant. But once you have accustomed yourself to receive and recognize the impressions, the rest is all a matter of practice and development. And now for the demonstrations themselves. You should begin with the simplest feats, and then work up gradually to the more complicated and difficult ones. This plan will build up your own powers, and will develop the Transmitter's. We herewith give a number of interesting feats and demonstrations, explaining the details of each. Of course, the general directions we have given regarding the receiving of impressions, etc., will apply to all of these feats, for the principle underlying them all is the same, precisely. FINDING A LOCATION. DEMONSTRATION I. Begin by having the audience select a part in the room, which may be easily reached by you. Then proceed as directed, until you feel that you have reached the right place, or location. FINDING A PERSON.