I once gave a seance while I was touring in England. It was a dark seance and just at the psychological moment a Spirit came through the window and walked around on the wall and ceiling of the room and then out of another window. The explanation is simple. On the bill with me were two acrobats, hand to hand balancers. One took off his shoes and stockings and the other sneaked up to him. He pulled down the window and then did a hand-to-hand balance with his partner and walked around the room. He then went back to his seat, put on his shoes, and looked as innocent and meek as possible under the circumstances when the lights were turned on. I told every one present that it was only a trick but as usual they insisted that I was a medium. A rope trick which always causes astonishment and helps to create a belief in supernatural aid is done by a woman medium who enters a cabinet with a rope bound around her neck. The loose ends of the rope are forced through opposite sides of the cabinet and held tightly by two members of the committee. Nevertheless the manifestations take place just the same and when the cabinet is opened afterwards the medium is found bound just as she was before the seance. As a matter of fact when the curtains have been closed and the committee have a grip on the ends of the rope the medium cuts the specially tied loop around her neck. When she is ready to come out she simply ties another loop, using a duplicate piece of rope which she had concealed on her person. When the committee release the ends of the rope she slips the mutilated piece into her bloomers and appears with the duplicate, which looks like the original one. There are various methods of producing Spirit photographs. One is to have a table prepared so that a developing pan is placed where an X-ray penetrates to the negative. This produces a “Spirit light.” Another is to fix the side of the plate with some luminous substance, shape, or flash, and it is astonishing what these things look like. You get forms and frequently recognize faces in the splotches. Father de Heredia has palmed a figure in his hand and as the investigator signed the negative remarked: “I might as well sign it myself.” In so doing he rested the left hand over the plate while signing with his right and the phosphorous figure in his hand was photographed on the negative. A simple method is to have something concealed in the hand and hold it over the lens instead of a cap, and still another is to get the camera out of focus and snap it secretly, then when the regular exposure is made there is an additional hazy something on the plate.