sible to comply with his demand. Faraday also required an answer to the following questions anong others, before attending: “Would he (Mr. Home) be glad if their (the manifesta tion's) delusive character were ostablished and exposed, and would he gladly help to expose it, or would he be annoyed and personally offended? (The italics in this sentence are not in the original.) “Does he consider the effects natural or supernatural? If natural, what are the laws which govern them? or does he think that they are not subject to laws? If supernatural, does he suppose them to be miracles, or the work of spirits? If the work of spirits, would an insult to the spirits be considered as an insult to himself?" Mr. Home took no notice of the above insults, and, it is believed, never wrote Faraday in the first instance, or took any notice of him whatever. He never even saw his letters. Dr. John Tyndall, F.R.S., in a note dated May 8, 1868, commenting upon Faraday's letter just mentioned, wrote: "I hold myself in readiness to witness and investigate, in the spirit of the foregoing letter (of Faraday's), such phenomena as Mr Home may wish to reveal to me during the month of June." A few days previously Mr. Home had written in the Pall Mall Gazette: “It will give me pleasure to meet Professor Tyndall, and any two gentlemen he shall designate. On my side I shall have at least two gentlemen whose names and position place them above the suspicion of aiding or abetting a fraud. I will meet Professor Tyndall and these gentlemen when and where they please, and under such circumstances as they may decide on. must only crave their patience if nothing should occur at the first, or even the second, séance." From that day to this Dr. Tyndall has not accepted the above invitation. A demand fora programme where no programme can be given, and the writing of supercilious letters in reply to civil invitations, amounts prac tically to a refusal to observe facts. Dr. Tyndall and men who act like him, are recommended to bear in mind the following words of Galileo: “Oh, my dear Kepler, how I wish that we could have our hearty laugh together. Here, at Padua, is the prin cipal professor of philosophy, whom I have repeatedly and urgently requested to look at the moon and planets through my glass, which he pertinaciously refuses to do. Why are you not here? What shouts of laughter we should have at the glorious folly; to hear the Professor of Philosophy at Pisa, labouring before the Grand Duke with logical arguments, as if with magical incantations to charm the planets out of the sky!" A little society known as the Dialectical Society is now investigating Spiritualism. It numbers among its members many shrewd and intelligent men, belonging chiefly to the legal and medical professions. Spiritualists watch its proceeding with a moderate amount of interest; nothing that any man or body of men may say or do can alter the established phenomena and laws of nature THE LITERATURE OF SPIRITUALISM. The literature of Spiritualism now consists of several hundreds of volumes, good, bad, and indif ferent, and almost entirely of American origin. Among the best volumes on the subject are Mrs De Morgan's From Matter to Spirit (Longmans) with a preface by Professor De Morgan, President of the Mathematical Society of London; The Planchette, by Epes Sargent; Spiritualism (2 vols.) by Judge Edmonds and G. T. Dexter, of New York; a History of Spiritualism, by Emma Hard inge; and The Autobiography of Andrew Jackson Davis. An interesting book, consisting simply of narrations of facts witnessed at remarkable seances, is Incidents of My Life (Longmans), by D. D. Home. The Soul of Things, by Denton, is a curious book indirectly connected with Spiritualism, and worth reading. Those unacquainted with Spiri tualism are recommended to read these books in the order in whieh they have just been mentioned. The only large lending library of Spiritual books in Great Britain is that belonging to Mr. J. Burns 15, Southampton-row, High Holborn, London, W.C. The English periodicals on the subject are, The Spiritual Magazine, Human Nature, Day break, and The Spiritualist.