Pic: Stanislawa is seemingly able to extrude the mysterious substance out of her mouth through the meshes of a net, that should prevent the medium to use any fabricated draperies.
Pic: Front View of Ectoplasm protrude through the net around her head.

25th of June 1913 the well-known German researcher and author of the classical “Phenomena of Materialisation” achieved to film a short sequence, where one of his subjects displayed ectoplasm in front of a historic cinematograph. Not only was it possible to show ectoplasm in light red-light-condition, but also its retreat back into the organism of the medium Stanislawa P.
That same female was also the subject that was able seemingly to protrude her ectoplasm through a fabricated net, in which her head was contained not having the possibility to bring anything fraudulently out of her mouth or her stomach outside the net into the experimnentation area – the cabinet – that was always observed from a battery of cameras, at least one inside of the cabinet.
Today that small piece of film is archived at the University of Freiburg at the institute of Parapsychology. Below you can see 20 frames, chosen by Schrenck himself that show the retreat of the substance back into the body of the medium.