The "Seybert Commission"[3] examined every known form of spiritualistic manifestation to which they had access, and implicitly under conditions imposed by the "mediums" themselves. These conditions are everything that could be devised and plausibly used to prevent the hoped-for dupe from detecting the fraud that is practised upon him. The Commission put the indelible stamp of fraud upon all so-called spiritualistic manifestations. Of the "spiritual rappings" they say: "To the subject of 'spirit-rappings' we have devoted some time and attention, but our investigations have not been sufficiently extensive to warrant us at present in offering any positive conclusions. The difficulty attending the investigation of this mode of spiritualistic manifestation is increased by the fact, familiar to physiologists, that sounds of varying intensity may be produced in almost any portion of the human body by voluntary muscular action. To determine the exact location of this muscular activity is at times a matter of delicacy. "What we can say thus far, with assurance, is that, in the cases which have come under our observation, the theory of the purely physiological origin of the sounds has been sustained by the fact that the 'mediums' were invariably, and confessedly, cognizant of the 'rappings' whenever they occurred, and could at once detect any spurious 'rappings,' however exact and indistinguishable to all other ears might be the imitation." Mrs. Kane has expressed amusement over the manner in which she eluded the inquisitions of the grave and conscientious Commission and left them puzzled over the "rappings." Even then, however, she cared so little for the preservation of the secret, that when she declined to be further examined by the Commission, she admitted to Mr. Furness that the gentlemen had ample ground for looking upon the manifestations which she had given as unsatisfactory. Mr. Furness says: "I told her that the Commission had now had two séances with her, and that _the conclusion to which they had come is that the so-called raps are confined wholly to her person_, whether produced by her voluntarily or involuntarily they had not attempted to decide; furthermore, that although thus satisfied in their own minds they were anxious to treat her with all possible deference and consideration, and accordingly had desired me to say to her that if she thought another séance with her would or might modify or reverse their conclusion, they held themselves ready to meet her again this evening and renew the investigation of the manifestations; at the same time I felt it my duty to add that in that case the examination would necessarily be of the most searching description.