Investigation Gallery

Helen Duncan - Ectoplasm & Teleplasmic hand

Piece of card showing two undated photographs of the Scottish medium Helen Duncan blindfolded during a sance, producing "ectoplasm" and a "hand". There are annotations to show fraudulence. This are in a series of photographs of Harry Price's investigations into the mediumship of Helen Duncan and of Esson Maule, who was involved with the exposure of Helen Duncan during a sance in Edinburgh. HPG/1/4/3 (xiii)"

© Mary Evans Picture Library/HARRY PRICE

The method of linking up hands and feet of sitting mediums

Undated photograph showing the method of linking up hands and feet of sitting mediums by means of electrical control. This is one of series of photographs documenting Harry Price's investigations into the mediumistic abilities of the brothers Rudi and Willi Schneider. HPG/1/6/2 (vi)

© Mary Evans Picture Library/HARRY PRICE

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Adams Universal Microscope

Adam's Universal Microscope - made by George Adams Snr. about 1755 for King George III, while he was still Prince of Wales. Probably the first microscope to be mounted on trunnions, an important improvement which was not persisted in. About a century later the method was revived and nowadays most microscopes are supported in this way. On display at The Science Museum in London. Date: circa 1910s

© Mary Evans / Grenville Collins Postcard Collection