We can confirm that this seance parlor conforms to the delicate standards outlined in Seance Parlor Feng Shui.  From Popular Mechanics, 1929.

From Popular Science Monthly, 1920.

We, too, nicknamed our planchette "the despair of science."  From Planchete, Or the Despair of Science by E. Sargent, 1869.

"Father de Heredia feels the approach of the ectoplasmic mystery; the 'ectoplasm' makes its appearance, taking on the form of a human being."  From Popular Mechanics, 1923.

A curtain blows out, the table raps three times, and a visitor from the unknown appears as a head surrounded by the curtain.  From The Annals of Psychical Science, Volume 5, 1907.

"A spirit slate-writing experiment."  From Popular Mechanics, 1918.  This should be of interest: The Care & Feeding of a Spirit Board.

Here a book on [so-called] scientific achievement is pitched as a spiritualist seance.  From an ad in Popular Mechanics, 1924.

Spiritualists tipping a table, from "Spirit-Rapping Made Easy," in Once a Week, 1860.

From "Spirit-Rapping Made Easy," in Once a Week, 1860.  This should be of interest: Seance Parlor Feng Shui.

A spirit slate message from a ghost who'll be back in two hours.  From Medical Pickwick, 1921.

"Casting out the evil spirits," plus the same scene in the ghostly realm (courtesy of the scanning process at Google Books), from The Rappers, Or, The Mysteries, Fallacies, and Absurdities of Spirit-rapping, Table-tipping, and Entrancement by A Searcher After Truth, 1854.

This recalls our repository of ghostly images that were never meant to be, entitled The Ghost in the [Scanning] Machine.  The specters were conjured unwittingly, through a mechanical process of book scanning.  Their portraits technically do not exist, except within this context.  To explain: in old books, frontispieces were typically protected by a sheet of translucent tissue paper.  So thorough is the Google Books scanning process that even this page of tissue paper is scanned.  The figure in the plate beneath the tissue—"beyond the veil,” as it were—emerges as from a foggy otherworld.  The frontispieces were never meant to be seen this way.  Their wraithlike manifestations have been artificially "fixed" in time by the scanning process. In essence, timeless phantasms of dead writers have been captured and bound into a new age.  And so we call this phenomenon "unforeseen art," as it constitutes an aesthetic expression without original intent.  Just as artists often credit their inspiration to a Muse, the accidental art herein is in the domain of real ghosts; every author here has departed to the Other Side.  We call it "necromancy by proxy," as the scanning machine serves as our "spirit medium" or shaman.

"Producing materialized forms in mediumistic seances."  From Popular Mechanics, 1918.  This should be of interest: Seance Parlor Feng Shui.

"His last mesmeric seance," from Judy, Or The London Serio-Comic Journal, 1885.  This should be of interest: Seance Parlor Feng Shui.

"The Mystic Soliman gives a private seance in a distinguished, English home. Soliman is today's most distinguished and talked about phenomenon. Soliman knows all, sees all and tells you everything."  Courtesy of the Nasjonalbiblioteket.  This should be of interest: Seance Parlor Feng Shui.

"How the spirits untie Jacoby."  From Leaves from Conjurers' Scrap Books by Hardin J. Burlingame, 1891.  This should be of interest: Seance Parlor Feng Shui.

From The Harvard Lampoon, 1921.