EXERCISES FOR DEVELOPMENT.
He may also try the experiment of having a friend hold a certain number of small buttons, etc., in his hand, and endeavor to will that the student shall "guess" the right number. Some people attain a surprising proficiency in this work, almost from the first. A similar experiment with the pack of cards, the student endeavoring to "guess" the card drawn from the pack, naming color, suit, and number in turn, may afford successful results. A number of these experiments may be thought of by an ingenious person, remembering always that the "guess" is not a guess at all, but an attempt to register the mental impression of the Transmitter.
REPRODUCING THE SPERRY FEATS.
The student may with great profit endeavor to reproduce the experiments of the Sperry children related in [Lesson II] of this work, in our account of the experiments of the Society for Psychical Research.