A technique is given whereby unconscious material and information may be learned under hypnosis through automatic movements of the fingers, or of Chevreul's pendulum. The movements are controlled by the unconscious mind of the patient. Questions are asked which can be answered either “yes” or “No.” With most people the movements of the pendulum can even be elicited in the waking state. Essentially, the method is a variation of automatic writing with movements substituted for writing. A brief case history is given wherein knowledge was gained in this way as to the causes for severe menstrual pains.