_Conditions of the Experiments._--We must never lose out of our sight the relative importance of the moral and intellectual status of the group of experimenters. That is one of the most difficult things to seize and comprehend. But when the force is abundant, the simple manifestation of the will is sometimes able to determine the movement. For example, upon a desire to that affect being expressed by the sitters, the table moves in the way it is requested to do. The phenomena occur as if this force were guided by an Intelligence distinct from that of the experimenters. I hasten to say that I regard that only as a probability, and that I think I have observed a certain resemblance between these personifications and the secondary personalities of somnambulists. In this apparent bond between the _indirect_ will of the sitters and the phenomena there is a problem the solution of which has so far completely escaped me. I suspect that this bond has nothing supernatural about it and I realize that the Spiritualistic hypothesis is a poorer explanation and inadequate to meet the facts; but I cannot formulate any satisfactory explanation. Close observations of the relations existing between the phenomena and the will of the sitters brings out other discoveries also. I mean, in the first place, the bad affect which disagreement among the experimenters produces. It sometimes happens that one of them expresses the desire to perceive a certain phenomenon. If the thing is slow in taking place, the same experimenter, or another one, will ask for a different spectacle. Sometimes different sitters will ask for several contradictory things at the same time. The confusion which reigns in the collective thought manifests itself in the phenomena, which themselves become confused and vague.[71] However, things do not happen absolutely as if the phenomena were directed by a will which is only the shadow or the reflex of that of the sitters. It sometimes happens that they show great independence, and flatly refuse to yield to the desires expressed.