This section is from the book "Hypnotism And Hypnotic Suggestion", by E. Virgil Neal, Charles S. Clark. Also available from Amazon: Hypnotism And Hypnotic Suggestion.
It is easier to create an illusion than a hallucination; that is, it is easier to give a man a cane or an umbrella and tell him it is a fishing rod and make him believe it, than it is to convince him that he holds a fishing rod in his hand when really there is nothing there.
Suppose you desire to make a man go fishing. After putting him to sleep by one of the methods described, say to him, "Now when you open your eves, you will see a beautiful stream. You will go fishing in this stream." Say this to him slowly, decidedly and convincingly. Repeat the idea to him several times, and then say, "Now open your eyes. See the water? Here is a fishing rod."
He will open his eyes, and at first may appear somewhat dazed. You point to the carpet in front of him and say, "Now you see that stream, why don't you go fishing?" In many cases the subject will accept the suggestion.
I do not intend to describe in detail the numerous illusions which may be produced by means of hypnosis. The one illustration will show the method to be employed in all cases. Suggestion is the key-note to hypnotism. The thing to be done first, is to put the subject into a deep sleep, then tell him just what you want him to do. Make your instructions brief, clear and emphatic. Almost any illusion may be produced by simply suggesting it to the subject when he is deeply asleep.
Subjects will frequently decline to do things which are opposed to their ideas of right, or to their inclination. It is sometimes almost impossible to get a hypnotized subject to take a drink of whisky. I have had difficulty in persuading a diffident man to make a speech. This element of self-suggestion is one we must consider. The subject's self-suggestion must be overcome before he will comply with your request. Sometimes these self-suggestions may be overcome by repeated suggestions on your part, but it is often impossible to persuade a man to do something to which he is strongly opposed.
 
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