Fig. 151.—Slide in box.
The Slides
must be stiff and perfectly opaque, so they will appear black when held up to the light. Make them of pieces of pasteboard boxes cut to fit in the side slits and long enough to extend a trifle beyond on each side of the box ([Fig. 151]).
Fig. 152.—Cow jumps over the moon.—Front side of slide.
Draw the different designs given here on separate slides, and with a sharp penknife cut them out, leaving holes in the slides exactly the shape of the designs. The holes should appear with clean-cut edges.