You will soon begin to notice that there is quite a difference in the power of Concentration on the part of different people acting as the Transmitter. Some will be able to Concentrate so forcibly that they will send you the message clear and sharp, while others will send only a feeble and wavering message. The more Concentration the Transmitter has the stronger will be the message. It will be very advisable for you to experiment with a number of persons acting as the Transmitter, so that you may become familiar with the different degrees of Concentration, personal characteristics of people in Transmitting, etc. This will aid you when you begin your parlor performances. When you find a lazy Transmitter who is sending only feeble messages, you must remonstrate with him, telling him that he must exercise his _Will-Power_ more. This plan will often arouse in them a desire to give a good exhibition of their Will-power, and they will begin sending you strong mental impulses. It is a good plan, when you have an unsatisfactory Projector, to extend his arm out its full length and hold it up about the height of your eyes. In this way he feels the strain, and it arouses his Will in order to hold it there, which seems to act in the direction of his sending sharper and clearer messages and impulse. In case the Transmitter proves very unsatisfactory, substitute another for him. But as a rule this unsatisfactoriness arises from the fact that he does not fully understand his duties--does not know what is required of him. A little practice and instruction will bring him out all right. It is often advisable to let the Transmitter read this book of instructions, if he happens to be a personal friend who is helping you out in your practicing and experiments. The Transmitter will find that by _looking_ toward the selected corner, he will be aided in concentrating his attention and directing his Will Power. Practice this exercise and experiment, in different rooms, and with different Transmitters, until you can go readily to the selected corner. Do not be discouraged, but remember that "practice makes perfect," and that like any other thing the art must be learned by patient practice and repetition. It is like learning to play the violin--skating--dancing, or anything else. If after a number of trials you begin to feel tired, stop practicing and adjourn the experiments until the next day. Do not unduly strain yourself, or tire out your mind. When the next day comes you will be surprised at the added proficiency you have gained. You may vary the above method by holding the Transmitter's hand out at arm's length, instead of holding it up to your head. Some find one plan more effective, and others prefer the second. The principle is the same in both cases, so adopt either plan, or any variation thereof, providing it proves effective. PRACTICE EXERCISE I. FINDING LOCATIONS.