The book of the lantern : being a practical guide to the working of the optical (or magic) lantern : with full and precise directions for making and coloring lantern pictures (1889)
Hepworth, Thomas Cradock, -1905 · New York : E.L. Wilson · leaf 60
ch bend away from one another at their tops. One tube, A, reaches nearly to the bottom of the bottle, and it will be seen that for several inches along its lower part it is perforated with holes. It is this tube which is connected by a rubber pipe to the . retort. The dotted line shows the height… … Fig. 18. there is a thick rubber collar, which is tied on the bottle by means of a piece of strong twine. The larger sectional diagram of the bottle neck (see fig. 18) will assist the reader in noting the arrangements described. In order to prevent any chance of water being thrown up into the gas…
Lantern projection
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
