Roberts, Etta
American materialization medium. After being accused of
fraud she held a remarkable test séance at Onset Grove, Onset
Bay, Massachusetts, on September 3, 1891, before sixty people.
She was enclosed in a wire cage. Phantoms not only appeared,
but the medium herself was mysteriously brought out of the
cage without disturbing the seals.
Many of the phantoms were seen to build up before the cage
and also to transform into other shapes. The full account of the
séance, signed by twelve people present, was published in the
Banner of Light (September 1891). Paul Joire wrote a brief description
of this test séance in Psychical and Supernormal Phenomena