54 SCIOPTICON MANUAL. 



best advantage when the rest of the slide is made 

 opaque, so that we may seem to lose sight of the screen, 

 and see the figure standing out in open space. 



The circle, including Thorwaldsen's Night (Fig. 18), 

 shows the size of the round glass, and also the appear- 

 ance of one of the most popular slides of this class. 

 A female figure is seen floating down to earth; around 

 her forehead is a wreath of poppy, indicating sleep; in 

 her arms are two sleeping children (Sleep and Death) ; 

 and in their company is the symbolic owl. 



THE SLIP SLIDE. 



Pig. 19 represents a class of movable slides most in 

 use for amusement; being cheap, easily operated, and 

 in shape to pack with ordinary slides. 



In the slide represented, a peacock without a tail is 

 painted on the immovable glass, and two tails are painted 



on the slip. Both glasses are blackened except where 

 the picture is to show; when the slip is pushed in, the 

 bird appears with a drooping tail; when the slip is drawn 

 out, then you will see him spread. 



In some of these there is a slip each side of the fixed 

 glass. In the popular slide called the rat-eater, a man 



