The attentive observation of the relation, existing between the phenomena and the will of the sitters, permits of the demonstration of other facts. Firstly, the bad effect of discord between the sitters. It often happens that one of them expresses a desire to obtain a certain given phenomenon; if the requested phenomenon be not immediately forthcoming, the same experimenter will demand a different one. Sometimes, several of the sitters ask for several contradictory things at the same time. The confusion which reigns in collectivity is generally manifested in the phenomena, which, in their turn, become vague and confused. Still, things do not altogether happen as though the phenomena were directed by a will, which was only an echo of the will of the experimenters. The phenomena often manifest great independence, and refuse decidedly to yield to the desires of the experimenters. By admitting even Janet’s hypothesis on the secondary personalities of mediums, stretching it from cases of somnambulism to cases of telekinesis, a fact which is very curious from a purely psychological point of view is to be met with occasionally: the secondary personality sometimes manifests itself at the same time as the normal personality, and a conflict between them is the result. I have seen this with Eusapia, when, for example, she wanted to drink, and the table violently opposed itself to her wishes. To sum up my observations upon the first of my conclusions: There is a close and positive connection between the movements effectuated by the medium or the sitters, and the displacement of articles of experimentation; there is a relation between these displacements and the muscular contractions of the experimenters; a probable relation, whose precise nature I am unable to state, exists between the will of the experimenters and paranormal movements. II. Certain peculiar sensations accompany the emission of the force employed. I hesitated before deciding to formulate this conclusion, because, notwithstanding the great number of observations I have made, I am only able to present this proposition with much reserve. The sensations I am going to describe are purely subjective, and may consequently give rise to all sorts of error and illusion. Some of these sensations may be explained by fatigue or prolonged immobility. In spite of these causes for error, which are, I acknowledge, very numerous and very real, it seems to me, that the impartial analysis of the facts observed tends towards showing that illusion, error, fatigue, and immobility do not explain them all. I will put aside visual, auditory, olfactory, tactile, gustatory sensations; these are, moreover, very rarely observed. I will limit myself to examining certain ill-defined sensations, which appear to depend upon the general sensitiveness, and not upon the sensory organs properly speaking. From the observations I have made, I am inclined to discern five principal sensations:—