_confirmations_ of his own errors, either in doctrine or practice; and that nothing should in any case be accepted from it that is repugnant to the established principles of the Christian religion. But we are after the _science_ of the thing now, and for the present that is our only question--a question, however, which the devil theory, as will appear from the foregoing, does not seem fully to answer. THEORY OF A FLOATING, AMBIENT MENTALITY. It is supposed by those who hold this theory, or rather hypothesis, that the assumed floating, ambient mentality is an aggregate emanation from the minds of those present in the circle; that this mentality is clothed, by some mysterious process, with a force analogous to what it possesses in the living organism, by which force it is enabled, under certain conditions, to move physical bodies and write or otherwise express its thoughts; and that in its expression of the combined intelligence of the circle, it generally follows the strongest mind, or the mind that is otherwise best qualified or conditioned to give current to the thought. Although the writer of the interesting article, entitled "_Planchette in a New Character_," in _Putnam's Monthly_ for December, 1868, disclaims, at the commencement of his lucubration, all theories on the subject, yet, after collating his facts, he shows a decided leaning to the foregoing theory as the nearest approach to a satisfactory explanation. "Floating, combined intelligence brought to bear upon an inanimate object," "active intellectual principle afloat in the circumambient air," are the expressions he uses as probably affording some light on the subject. This is a thought on which, as concerns its main features, many others have rested, not only in this country but in Europe, especially in England, as I am told by a friend who recently visited several sections of Great Britain where forms of these mysterious phenomena prevail.