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 164
154 SCIOPTICON MANUAL. While the amount of the alcohol flame depends on the height of the fountain, this flame is easily regulated by … No. 3, Fig. 38. This term applies distinctively when a collected supply of hydrogen gas, as well as of oxygen, is required, and when both are alike under heavy pres¬ sure and forced through the tubes of the blow-pipe. Oxygen and hydrogen, mixed in a common reservoir, cannot be safely used in…
Lantern projection · Slides (Photography)
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
![An illustration from [Volume I.]](https://img.insideoutlibrary.com/img/200/erara-31314765-39-1.webp)
