In the third place I have verified a correlation, between the intensity of the muscular effort and the abnormal movement. This is an interesting observation, for I have not observed it when studying the phenomenon of raps. As an example, I will cite an experiment which I have often made. When the liberated energy is insufficient to provoke movements, and the existence of a certain quantity of force has, nevertheless, been ascertained, if the manœuvre of attraction does not succeed, we can sometimes provoke the movement by shaking the hand about at a certain distance above the table. This rapid movement of the hand and arm appears to me to develop a maximum of telenergy. Again, rubbing the feet on the floor, rubbing the hands, the back, the arms, in fact any quick or slightly violent movement appears to liberate this force. These manœuvres often bring about the realisation of the desired phenomenon. It is evident that such manœuvres must be employed with discernment; some of them might hamper observation: _e.g._ rubbing the feet on the floor if telekinetic movements of the table be desired, for this would render it difficult, if not impossible, to check the position of the medium’s feet. The breath appears to exercise a great influence; things happen as though in blowing on the object, the sitters emitted a quantity of energy, comparable to that which they emit, in quickly moving their limbs. This is a strange peculiarity, one which is apparently very difficult to explain. A more thorough analysis of the facts permits us to think, that the liberation of the energy employed depends upon the contraction of the muscles and not upon the executed movement. The fact which reveals this peculiarity is easily observed. When the chain round the table is formed, a movement without contact can be procured by tightly squeezing one another’s hands, or by resting the feet very firmly on the floor: the former is by far the better process. The limbs have executed an insignificant movement, and we may say that the muscular contraction is about the only physiological phenomenon visible to observers; it is nevertheless sufficient. These ascertainments all tend to show that the agent, which is the determining cause of movements without contact, has some connection with our organism and probably with our nervous system.