_Investigation by the Dialectical Committee._—There are many other investigators who ought to be noticed in any complete sketch of the subject, but we have now only space to allude briefly to the “Report of the Committee of the Dialectical Society.” Of this committee, consisting of thirty-three acting members, only eight were, at the commencement, believers in the reality of the phenomena, while not more than four accepted the spiritual theory. During the course of the inquiry at least twelve of the complete skeptics became convinced of the reality of many of the physical phenomena through attending the experimental sub-committees, and almost wholly by means of the mediumship of members of the committee. At least three members who were previously skeptics pursued their investigations outside the committee meetings, and in consequence have become thorough Spiritualists. My own observation as a member of the committee and of the largest and most active sub-committee, enables me to state that the degree of conviction produced in the minds of the various members was, allowing for marked differences of character, approximately proportionate to the amount of time and care bestowed on the investigation. This fact, which is what occurs in all investigations into these phenomena, is a characteristic result of the examination into any natural phenomena. The examination into an imposture or delusion has, invariably, exactly opposite results: those who have slender experience being deceived, while those who perseveringly continue the inquiry inevitably find out the source of the deception or the delusion. If this were not so, the discovery of truth and the detection of error would be alike impossible. The result of this inquiry on the members of the committee themselves is, therefore, of more importance than the actual phenomena they witnessed, since these were far less striking than many of the facts already mentioned. But they are also of importance as confirming, by a body of intelligent and unprejudiced men, the results obtained by previous individual inquirers. Before leaving this report, I must call attention to the evidence it furnishes of the state of opinion among men of education in France. M. Camille Flammarion, the well-known astronomer, sent a communication to the committee which deserves special consideration. Besides declaring his own acceptance of the objective reality of the phenomena after ten years of investigation, he makes the following statement: