Ectoplasm is a substance believed to exude from a medium during a séance. It can materialise in different forms, being sometimes vaporous, sometimes viscous, sometimes a mass of fine threads and sometimes a cloth-like substance. It supposedly disintegrates when exposed to light or human touch. This example was captured during a séance given by the medium Helen Duncan, one of the last people to be prosecuted under the Witchcraft Act of 1735.
For more images click ‘Open Digital Library’.
Portsmouth, ca 1950
MS SPR Mediums/Duncan/Ectoplasm
By kind permission of the Society for Psychical Research