Fig. 121.
Having a picture on thin cardboard or paper, representing an interior or exterior of a building, cut out three sides of a door, so that it will bend back as if on hinges; behind the opening thus made fasten a second picture, depicting a landscape, or the inside of a room, as the case requires.
SUBJECTS.
“Pity the Sorrows of a Poor Old Man.” The upper picture is that of a room with a fire in the chimney-place on one side, a well-filled supper table on the other, the door in the middle. The under picture has a background of a winter landscape, with an old blind man, leaning on his staff, and taking off his hat, so placed as to seem to be on the threshold.
“How glad they will be to see me!” The upper picture is a street, with a man about to open the door; the under picture a room, in which several children are quarrelling, amidst a chaos of broken toys, furniture, and looking-glass, with mamma upsetting the tea-table in trying to beat a bad boy teasing the cat.
THE EIDOTROPE.
Perforate two metal or board discs, and make one turnable around in front of the other, by means of a band and pulley, while both are mounted as a magic-lantern slide.
When their shadows are thrown on the screen, the effect of the revolving plate more or less eclipsing the other, is to create singular forms.
To imitate watered silk, use wire gauze. For effect, let the light pass through tinted glass.