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 167
157 SCIOPTICON MANUAL. None of the accidents or annoyances above enumer¬ ated have ever happened with the jet herein described. Its characteristic flat mouth, small cavity, and ready adjustments are in its favor, but may not be relied on in spite of bad conditions. It will be observed that this… … No. 1. No. 2. No. 3. The Three Jets presented above, side by side, show what is peculiar to each. The oxygen tube of each is screwed down upon its lead washer, so as to present its flat mouth to the lime, as shown in No. 3. When a very strong current meets with roughness at the mouth of a jet, or…
Lantern projection · Slides (Photography)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
