At the head of social heresies, and rapidly beginning to take rank as a religious heresy as well, I have no hesitation in placing modern Spiritualism. Those who associate this latest mystery only with gyrating articles of furniture, rapping tables, or simpering planchettes, are simply in the abyss of ignorance, and dangerously underrate the gravity of the subject. The later development of Spirit Faces and Spirit Forms, each of which I have examined thoroughly, and made the results of my observations public, fail to afford any adequate idea of the pitch to which the mania--if mania it be--has attained. To many persons Spiritualism forms the ultimatum, not only in science, but also in religion. Whatever the Spirits tell them they believe and do as devoutly as the Protestant obeys his Bible, the Catholic his Church, or the scientific man follows up the results of his demonstrations. That is, in fact, the position they assume. They claim to have attained in matters of religion to demonstration as clear and infallible as the philosopher does in pure science. They say no longer "We believe," but "We know." These people care little for the vagaries of Dark Circles, or even the doings of young ladies with "doubles." The flight of Mrs. Guppy through the air, the elongation of Mr. Home's braces, the insertion of live coals among the intricacies of Mr. S. C. Hall's exuberant locks, are but the A B C which have led them to their present advanced position. These physical "manifestations" may do for the neophytes. They are the initiated. I am the initiated; or I ought to be, if patience and perseverance constitute serving an apprenticeship. I have devoted a good portion of my late life to the study. I have given up valuable evenings through several consecutive winters to dark seances; have had my hair pulled, my head thumped with paper tubes, and suffered other indignities at the hands of the "Invisibles;" and, worse than all, my friends have looked upon me as a lunatic for my pains, and if my enemies could have wrought their will they would have incarcerated me as non compos, or made an auto-da-fe of me as a heretic years ago.