'The Sermon,' for December, publishes a letter from Dr. Alfred R. Wallace, written on the 6th of November last, in reply to a letter of inquiry by J. W. Ney, of Bracebridge, Canada. Dr. Wallace says:--

     'I do not feel called upon to answer T. J. Hudson's clever but one-sided article. If the facts he states were all the facts, his theory would be possibly true but very improbable. But there are hosts of other facts which this theory will not account for. Such are, the statement of facts known to no one living; the giving of facts by such means or in such a way as to temporarily deceive all present; and of facts which all present believe to be erroneous. This last is very common in messages by raps, when letters or words are given which seem to be nonsense or errors to all present; the communicating intelligence insists, and upon adding one or two words, or sometimes one or two letters, the whole becomes plain. I have witnessed this many times, and it seems to show as clearly as possible the presence of an independent mind which takes this method of showing that it is independent. Of course all the phenomena of independent writing and drawing, of spirit-photos, levitation, and materialisations of recognisable forms, receive no explanation. I myself wholly reject the theory of the "subliminal," or "second," or "unconscious" self, as being wholly unproved.'