For example, if a spirit wants to give the psychic medium the name Sandy, they might flash (in the psychic medium’s mind) the face of a person whom the psychic medium knows named Sandy. If they want to get the psychic medium to say the word “coffee,” they might show the psychic medium someone’s cat that had the name Coffee. This can be confusing and requires that the psychic medium interpret what they are seeing in their mind. For instance, the psychic medium might say cat rather than coffee; and to the person being read, the psychic medium might appear wrong when the psychic medium is actually just “misinterpreting” the message.
In September 1878 the British medium Charles Williams and his fellow-medium at the time, A. Rita, were detected in trickery at Amsterdam. During the séance a materialized spirit was seized and found to be Rita and a bottle of phosphorus oil, muslin and a false beard were found amongst the two mediums. In 1882 C. E. Wood was exposed in a séance in Peterborough. Her Indian spirit control "Pocka" was found to be the medium on her knees, covered in muslin.