In the case of a medium, the charge of energy increases with time and relative immobility. If by making unconscious or voluntary movements, experimenters do not allow this energy to accumulate, it will never reach the tension necessary for exteriorisation. There are, however, some reservations to be made; for I have noticed, that when the tension is sufficient, simulated or executed movements determine the production of the motor phenomenon—just as if the execution of the movement appeared to liberate a quantity of energy superior to that which was utilised by the working of the muscle; the excess of force was then apparently employed in the realisation of the telekinetic movement. I have noticed that, every time we allow voluntary or involuntary movements, telekinetic movements are difficult to obtain. One would think, that the energy which determines them can only accomplish them when it cannot find a normal outlet; it has a tendency to expend itself normally in ordinary muscular movements: this tendency is one of the most frequent causes of involuntary fraud, and the habitual occasion of voluntary fraud. We must see that this tendency be checked: this may call for some effort of attention at the beginning, but ‘habit is second nature.’ Things being thus regulated, we wait. A first seance is generally without apparent result, unless one has the good luck to meet with a medium straight away—which is not always the case. Those who seriously wish to understand these facts must have a great fund of indefatigable patience. I can guarantee them success sooner or later, but I cannot tell how many barren experiments may be made before that success comes. They must not grow weary; let them progressively modify the composition of the circle until the necessary element be met with. They will then be rewarded for their trouble. I strongly advise them to avoid professional mediums. Some of them are sincere, and I think that Eusapia Paladino is of that number. It is true that sometimes she produces suspicious phenomena, but it is puerile to conclude therefrom that she constantly cheats. The suspicious cases I have observed with Eusapia are interesting, if studied impartially. They show the rôle which the subliminal conscience—impersonal or bound to a second personality—plays in the phenomena, and give rise to attractive psychological problems.