[ Magic Lantern ]
Phantascope. Circa 1830. Reg. 05817
With the phantasmagorias, the projector was placed behind the screen (retro-projection) so that the public coul not see the trick. The wheels allow the lantern to be moved closer to the screen or further away from it, so that the projected image could be enlarged or reduced. It was also common to project throught smoke, to give a more unreal atmosphere to the session.