The Laboratory of Satan: Half of a stereoscopic french devil tissue view (diablerie) from the 1870s.
These tissue views are made of three layers. First is the ‘normal’ albumen photographic paper. Second is a painted tissue behind the photograph. Third is a white protection tissue. If you hold the picture against a light, the colors come through. The glowing eyes of the skulls are pinpricked and labeled with a red translucent material.
