Since Dr. Sexton has become a Spiritualist he has been as energetic an advocate for its truths as he had been before for the negations of secularism. His experience and ability as a lecturer, with his long schooling in every form of manifestation, render him one of the most valuable promulgators of its teachings. He has also done excellent service in exposing the pretensions of those conjurers who profess to expose Spiritualism. This he does in the most practical way, not only by explaining how the professed imitations of spiritual manifestations are performed, but by actually performing them before his audience; and at the same time pointing out the important differences between what these people do and what occurs at good séances. Any one who wishes to comprehend how Dr. Lynn, Messrs. Maskelyne and Cook, and Herr Dobler perform some of their most curious feats have only to read his lecture, entitled, “Spirit Mediums and Conjurers,” before going to witness their entertainments. We can hardly believe that the man who does this, and who during fifteen years of observation and experiment held out against the spiritual theory, is one of those who, as Lord Amberley tells us, “fall a victim to the most patent frauds, and are imposed upon by jugglery of the most vulgar order”; or who, as viewed from Prof. Tyndall’s high scientific standpoint, are in a frame of mind before which science is utterly powerless—“dupes beyond the reach of proof, who like to believe and do not like to be undeceived.” These be brave words; but we leave our readers to judge whether they come with a very good grace from men who have the most slender and inadequate knowledge of the subject they are criticising, and no knowledge at all of the long-continued and conscientious investigations of many who are included in their wholesale animadversions.