Biunial Lantern and lantern slides
Muybridge's Biunial Lantern has several curious features. It appears to have had its footprint reduced for reasons unknown. It also has a facility for extending the two lenses and thereby allowing for a mechanism to be placed between the light source and the lenses. It is possible that this adapted lantern may have doubled-up as a second zoopraxiscope.
Lantern Slides Collection
We have over 2,000 images on glass. Most of these are Magic Lantern slides, the standard means of illustrating lectures during the 19th century up to the 1930s. Most slides are nominally 3.25 inches square (English Format) or 3.25 x 4 inches (American Format).
Slides usually consist of two pieces of glass bound together with gummed paper strips with the photographic emulsion protected by being on the inside. Some appear not to have been bound with a cover glass for projection and are consequently listed as 'unmounted. Others have evidently had their cover glass removed at some point and are listed as 'disbound'.