This section is from the book "Practical Mind-Reading", by William Walker Atkinson. Also available from Amazon: Practical Mind-Reading: A Course of Lessons on Thought Transference.
After you have grown proficient in locating the corners of rooms, you may have the Transmitter select other parts of the room, such as doors, mantels, windows, alcoves, projections, etc. Try a number of these selected locations in turn, gaining a variety of experiences which will prove valuable later on. In all of these experiments the Transmitter must guard you from running into obstacles, furniture, etc., by telling you to avoid them, guiding you past them, and in other proper ways prevent you from bruising yourself or breaking or upsetting things. You must impress this upon his mind, and then you should give yourself into his care with the utmost confidence, giving yourself no further concern about these things, and keeping your mind as passive as possible. Don't allow your mind to be distracted by outside things - attend to the matter of the experiment in which you are engaged.
The next step should be the selecting and finding of large objects in the room, such as chairs, tables, etc. Proceed as in the previous exercises. Do not neglect this exercise in your desire to do more wonderful things, for you need just this training. You will realize the importance of these exercises after you begin to appear before friends and evening companies, etc., when you will be called upon to find hidden objects, selected articles secreted under tables, on persons, on furniture, etc. If you can find selected chairs you will be able to more readily find persons seated on chairs, Continue this exercise until you can readily find any and every piece of furniture in a room, and the other large objects in a room as well, when they are thought of by the Transmitter.
After mastering the above exercise have the Transmitter select some small articles, such as a book, vase, ornament, etc, on a table, mantel-piece, etc. Proceed as before, varying the objects and places, endeavoring to get as wide a range of experiences as possible along the line of Mind Reading of this kind.
After you have mastered the last mentioned exercise, have the Transmitter select a small object, such as a watch-key, match-safe, etc., and secrete it in some part of the room, you remaining out of the room until the article is selected and hidden, Proceed as before, until you find the secreted object. Your Transmitter should endeavor to give you a great variety in this exercise, in order to properly train you for the public demonstrations before companies, etc.. Have him place a key in a book, under a rug, back of a picture, and in similar difficult places. Let him exercise his ingenuity in finding strange places in which to hide the object. In the experiments in finding the hidden objects he must train himself to give you the mental messages "up"; "down"; "to the right"; "to the left," etc., just as he did his old message or impulse "this way." And you must train yourself to receive them. This training will be of the greatest possible benefit to you when you are called upon later to find objects hidden in people's pockets, etc.
 
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