Yet, as a rule, Mediums assert that they invite investigation.  Our experience has been, as we have just said, that as soon as an investigation, worthy of the name, begins, all manifestations of Spiritualist power cease.

The bare statement of the conditions whereunder the Mediums maintain that the manifestations of Independent Slate Writing are alone possible, involves the extreme difficulty, we might almost say the impossibility, of any genuine or rational investigation.  Even the very spirit of investigation, or of incredulity, seems to exercise a chilling effect and prevents a successful manifestation.  Indeed Mr. Hazard once told us that the true spirit in which to approach the study of Spiritualism is ‘an entire willingness to be deceived.’  In Independent Slate Writing, in our experience, there is a period, of longer or shorter duration, when the slate is concealed.  During this period the investigator’s eye must not watch it.  When the slate is held under the table, knees and feet and clothing exert no deleterious effect, but the gaze of a human eye is fatal to all Spiritual manifestation; although to one of our number, on three occasions, a pocket mirror, carefully adjusted, unknown to the Medium, gave back the reflection of fingers, which were clearly not Spiritual, opening the slates and writing the answer.

There is really no step in the bare process of producing this writing, as we have observed it, which might not be accomplished by trickery or by legerdemain.  Of course, therefore, we were sincerely anxious to disprove in these experiments the presence of those discreditable elements, not only for the credit of human nature, but for the sake of the great scientific interest involved.  We are perfectly ready to accept any fact of Spiritual power; and so far from flinching from an open avowal of our belief in this revelation of a novel force in Nature, we would welcome it.  But no one, not a Spiritualist, we should suppose, can demand of us that we should accept profound mysteries with our eyes tight shut, and our hands fast closed, and with every avenue to our reasoning faculties insurmountably barred.  Yet this is precisely what is demanded of us by Mediums in regard to Independent Slate Writing.  We must sign a dispensation to forego the exercise of common sense, and accept as ‘fact’ what they choose so to term.  Few assertions by departed Spirits are more hacknied than, ‘This is a great truth,’ and yet in an honest endeavor to prove that it is a ‘great truth;’ and not a great lie, the sincere and earnest seeker is at every turn baffled and thwarted.

To eliminate from our investigations every element of distrust, or hostility, or suspicion, or chilling antagonism, we entrusted to Mr. Hazard’s friend, Mrs. Patterson, vouched for by him as one of the very best Mediums in the country, two carefully closed and sealed slates, enclosing, of course, the required piece of slate-pencil, with the earnest entreaty that the Spirits should write therein even if it were but the merest mark, sign, or scratch, therewith we would be content, and be ready to accept Independent Slate Writing with its train of consequences.  The Medium was fully impressed with the importance of the trial, and with the fame which would thereby accrue from such a wholesale conversion as that of the united Seybert Commission.