The British direct-voice medium Frederick Tansley Munnings was exposed as a fraud when one of his séance sitters turned the lights on which revealed him to be holding a trumpet by means of a telescopic extension piece and using an angle piece to change the auditory effect of his voice.[126] Richard Hodgson held six sittings with the medium Rosina Thompson and came to the conclusion she was a fraud as he discovered Thompson had access to documents and information about her séance sitters.[127]
The first documented tarot packs were recorded between 1440 and 1450 in Milan, Ferrara, Florence and Bologna when additional trump cards with allegorical illustrations were added to the common four-suit pack. These new decks were called carte da trionfi, triumph cards, and the additional cards known simply as trionfi, which became "trumps" in English. The earliest documentation of trionfi is found in a written statement in the court records of Florence, in 1440, regarding the transfer of two decks to Sigismondo Pandolfo Malatesta.[6][7]
The illustrations of French-suited tarot trumps depart considerably from the older Italian-suited design, abandoning the Renaissance allegorical motifs. With the exception of novelty decks, French-suited tarot cards are almost exclusively used for card games. The first generation of French-suited tarots depicted scenes of animals on the trumps and were thus called "Tiertarock" ('Tier' being German for 'animal') appeared around 1740. Around 1800, a greater variety of decks were produced, mostly with genre art or veduta. Current French-suited tarot decks come in these patterns:
Ten mediums—five less expert and five experienced—were injected with a radioactive tracer to capture their brain activity during normal writing and during the practice of psychography, which involves allegedly channeling written communication from the "other side" while in a trance-like state. The subjects were scanned using SPECT (single photon emission computed tomography) to highlight the areas of the brain that are active and inactive during the practice.
The fraudulent medium Ronald Edwin confessed he had duped his séance sitters and revealed the fraudulent methods he had used in his book Clock Without Hands (1955).[164] The psychical researcher Tony Cornell investigated the mediumship of Alec Harris in 1955. During the séance "spirit" materializations emerged from a cabinet and walked around the room. Cornell wrote that a stomach rumble, nicotine smelling breath and a pulse gave it away that all the spirit figures were in fact Harris and that he had dressed up as each one behind the cabinet.[165]
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.[82] 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.[83]