Optic projection : principles, installation and use of the magic lantern, projection microscope, reflecting lantern, moving picture machine, fully illustrated with plates and with over 400 text-figures (1914)

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CH. VIII] PREPARATION OF LANTERN SLIDES 203 § 315. Making lantern slides. — In the use of the lantern at the present day, one will find occasion to make lantern slides by all of the different ways that have ever been devised. That is, they may be drawn or painted wholly by hand ; made partly by photography FIG. 113. BRITISH LANTERN SLIDE OF FULL SIZE WITH TWO "SPOTS." The "spots" are on the upper corners in the English slides. The picture shown on the slide is of a retouching stand suitable for use in coloring slides. 5 The slide. R A reflector to throw the light up through the slide. This may be a mirror or simply white paper. and then hand-colored; made wholly by photography, or transparent natural objects may be used. Natural objects of the right transparency may be mounted on glass slides and used in the lantern. For example, seaweeds, thin leaves, skeletonized leaves, large wings of insects; crystals on