14. You feel the presence of Spirits – You sense that there *could* be a spirit, but you’re not sure. Maybe you feel like someone is watching you, but it’s just you and Fido hanging out, snacking on popcorn and watching Game of Thrones. You may feel a sudden wave of emotion, such as sadness or anxiety associated with the presence. (clairsentience)
In 1910 at a séance in Grenoble, France the apport medium Charles Bailey produced two live birds in the séance room. Bailey was unaware that the dealer he had bought the birds from was present in the séance and he was exposed as a fraud. The psychical researcher Eric Dingwall observed the medium Bert Reese in New York and claimed to have discovered his billet reading tricks. The most detailed account at exposing his tricks (with diagrams) was by the magician Theodore Annemann. https://drive.google.com/file/d/1NC_exEwvIecJ9EWDa-MwzzZdzPkWWZ-H/view?usp=sharing
^ "Glossary of Key Words Frequently Used in Parapsychology" Archived 2010-12-24 at the Wayback Machine, Parapsychological Association website. "Materialization: A phenomenon of physical mediumship in which living entities or inanimate objects are caused to take form, sometimes from ectoplasm." Retrieved January 24, 2006 "Medium – Definition". Dictionary.com. Retrieved 23 March 2007.