The Sciopticon manual : explaining lantern projections in general, and the Sciopticon apparatus in particular, including magic lantern attachments, experiments, novelties, colored and photo-transparencies, mechanical movements, etc. (1877)
Marcy, L. J. (Lorenzo J.) · Philadelphia : J.A. Moore · leaf 39
HrhNhhhHb mmSmSaUsi 30 SCIOPTICON MANUAL. thus holding the instrument firmly in place. "When a pair is used for dissolving views, the fronts are thus held in a fixed position, while the rear ends may be spread apart till the disks on the screen coincide. o o/ — Stage and spring for wooden-mounted… … Fig. 1Z. both sides of the cylinder. The picture is drawn out with the left hand, while with the right hand another is made to follow in its place, so as not to show the white disk on the screen. p q — Condensing lenses. Lenses when taken from a dump or cold place are apt to become covered with…
Lantern projection · Slides (Photography)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
