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 trans- 

 parent 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 



