ARTICLE BY HORACE GREELEY, PUBLISHED IN THE TRIBUNE. "Mrs. Fox and her three daughters left our city yesterday on their return to Rochester, after a stay here of some weeks, during which they have freely subjected the mysterious influence by which they seem to be accompanied, to every reasonable test, and to the keen and critical scrutiny of the hundreds who have chosen to visit them, or whom they have been invited to visit. "The rooms which they occupied at the hotel have been repeatedly searched and scrutinized; they have been taken without an hour's notice, into houses they had never before entered; they have been, all unconsciously, placed on a glass surface concealed under the carpet, in order to interrupt electric vibrations; they have been disrobed by a committee of ladies, appointed without notice, and insisting that neither of them should leave the room until the investigation had been made, etc., etc., yet we believe that no one to this moment pretends that he has detected either of them in producing or causing the 'rappings;' nor do we think any of their contemners has invented a plausible theory to account for the production of these sounds, nor the singular intelligence which (certainly at times) has seemed to be manifested through them. "Some ten or twelve days since, they gave up their rooms at the hotel, and devoted the remainder of their sojourn here to visiting several families, to which they had been invited by persons interested in the subject, and subjecting the singular influence to a closer and calmer examination than could be given to it at a hotel and before casual companies of strangers, drawn together by a vague curiosity, mere rational interest, or predetermined and invincible hostility. Our own dwelling was among those thus visited, not merely submitting to but courting the fullest and keenest inquiry with regard to the alleged 'manifestations' from the Spirit world by which they were attended. We devoted what time we could spare from our duties, out of three days, to this subject, and it would be the basest cowardice not to say that we are convinced beyond a doubt of _their perfect integrity and good faith_ in the premises. Whatever may be the origin or the cause of the 'rappings,' the ladies in whose presence they occur do not make them. We tested this thoroughly and to our entire satisfaction.