During the week before Katie took her departure she gave seances at my house almost nightly, to enable me to photograph her by artificial light. Five complete sets of photographic apparatus were accordingly fitted up for the purpose, consisting of five cameras, one of the whole-plate size, one half-plate, one quarter-plate, and two binocular stereoscopic cameras, which were all brought to bear upon Katie at the same time on each occasion on which she stood for her portrait. Five sensitizing and five fixing baths were used, and plenty of plates were cleaned ready for use in advance, so that there might be no hitch or delay during the photographic operations, which were performed by myself, aided by one assistant. My library was used as a dark cabinet. It has folding doors opening into the laboratory; one of these doors was taken off its hinges, and a curtain suspended in its place to enable Katie to pass in and out easily. Those of our friends who were present were seated in the laboratory facing the curtain, and the cameras were placed a little behind them, ready to photograph Katie when she came outside, and to photograph anything also inside the cabinet, whenever the curtain was withdrawn for the purpose. Each evening there were three or four exposures of plates in the five cameras, giving at least fifteen separate pictures at each seance; some of these were spoilt in the developing, and some in regulating the amount of light. Altogether, I have forty-four negatives, some inferior, some indifferent, and some excellent. Katie instructed all the sitters but myself to keep their seats and to keep conditions; but for some time past she has given me permission to do what I liked--to touch her, and to enter and leave the cabinet almost whenever I pleased. I have frequently followed her into the cabinet, and have sometimes seen her and her medium together, but most generally I have found nobody but the entranced medium lying on the floor, Katie and her white robes having instantaneously disappeared.