Some believe this substance emanates from a medium during a seance
.... Spiritualists 
believe that phenomena produced by mediums (both mental and physical 
mediumship) are... [DOC] [TLE] The View from the East End - Sherlock Peoria [PAR] Apr 8, 2007 ... As I mentioned last time, there is some discussion going on about the ... to the 
Spiritualism movement, but he still wanted to believe in sances, fairies, etc.