Note 16 — Chapter IV · AN EXPERIMENT ON THE THEORY OF PROTECTIVE VIBRATION

Capt. Hugh Pollard was the author of this theory. His monograph was never printed, but typescripts of his sensational lecture before the members of the now defunct Odic Club were circulated to certain interested parties. He tells me that he had previously spent an interesting night at a haunted house. He was in the company of Mr. Eliott O’Donell and obtained a puzzling and unsatisfactory flashlight photograph of the manifestation that occurred on that occasion.