The sciopticon manual : explaining Marcy's new magic lantern, and light, including magic lantern optics, experiments, photographing and coloring slides, etc. (1874)
Marcy, L. J., author · Philadelphia : L.J. Marcy · leaf 150
140 SCIOPTICON MANUAL. “ The accompanying rude drawing will give you some idea of the plan. “The front A and the rest B are … render the image visible, like the focus¬ ing ground-glass in a photographer’s camera; this rough¬ ing also gives it a “ tooth ” to hold the markings. Ground-glass itself is sometimes used for obtaining drawings by superposition, which is rendered transparent by a coat of varnish, and it might be…
Lantern projection · Slides (Photography)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
