Dr. Henry Slade was, of course, identified and recognized as the principal slate-writing medium, but at various times he presented other phenomena, one of which was the playing of an accordion while held in one hand under the table. The accordion was taken by him from the table with his right hand, at the end containing the strap, the keys or notes at the other end being away from him. He thus held the accordion beneath the table, and his left hand was laid on top of the table, where it was always in plain view. Nevertheless, the accordion was heard to give forth melodious tunes, and at the conclusion was brought up on top of the table as held originally; the whole dodge consisting in turning the accordion end for end as it went under the table. The strap end being now downward, and held between the legs, the medium’s hand grasped the keyboard end, and worked the bellows and keys, holding the accordion firmly with the legs and working the hand, not with an arm movement, but mostly by a simple wrist movement. Of course, at the conclusion, the hand grasped the accordion at the strap end, and brought it up in this condition. Sometimes an accordion is tied with strings and sealed so the bellows cannot be worked. This is for the dark séance. Even in this condition the accordion is played by inserting a tube in the air-hole or valve and by the medium’s using his lungs as bellows. In regard to dark séances and materializations, I would state that they are so barefaced and bold it is hardly worth while to worry about them. What cannot be done in the dark? Spirit costumes, to be donned later by the medium to impersonate people from the other world, are concealed in strange places under the very eyes of the investigators--in the body of the guitar, in a drum, about the person of one of the circle of skeptics, who is really a confederate, or behind the surface of a wall. Time and place make all the difference in the method of work used by mediums. In their homes mediums have any number of accomplices, who enter the room under cover of darkness by various means--one way, by means of a trap in the floor. This opens upwardly; the carpet does not have to be cut, and can also be well tacked down. The trap is not cut square, but triangularly, across the two sides of the room in one corner. Through this trap the confederates, disguised as spirits, enter from the cellar below and vanish. Another method is to gain admittance from an adjoining room. Between the two rooms are sliding doors, misnamed “folding” doors. The space in one of the walls is not only large enough to receive its own single door, but also a portion of the other. Before commencing the séance, the doors are locked and the key kept by a committee. The doors are also sealed with court plaster across their joints, and said court plaster sealed with sealing-wax. The confederates are not obliged to push the doors apart; they simply slide both at the same time toward the side previously mentioned.