A Mechanical Magic Lantern Slide of a Magician With Changing Heads

French, mid 19th Century, paper label to rear for 'EMILE LIOTARD, Pasteur, LA VERNAREDE (Grad), the slide constructed of wood with a brass top face, with lever to one side that ratchets the heads around on a glass disk, 12cm x 25cm

Note: The element of surprise was captured by magic lantern showmen using slides which when operated produced an unexpected result. The transformation of a human head to that of an animal is well illustrated in this complex slide where the head of the magician is supplanted with a dozen different heads.