Fig. 3 represents what is called a horizontal section; that is, the work is supposed to be cut across from front to back, a little way above the shelf just mentioned, and the observer is supposed to be looking downward at it. Fig. 4 represents the work in an upright position, and the observer sees the front of it.
From the top of the shelf to the lower outside edge of the box should be just five and one-half inches. Next come the two uprights, _a b_, _c d_, Fig. 3, and _A A_, Fig. 4. They may be made from the bottom of the box, which was taken out, it will be remembered, and let their width correspond to _a b_ and _c d_, Fig. 3. Round off the edges at _a_ and _c_, and smooth it with sand-paper, as it would soon tear the pictures if left in a rough state; place these two boards in position, and secure them by nails at the top and bottom. Now cut two oblong pieces from stiff cardboard, as long as these wooden uprights, and wide enough to cover the spaces left at _e b_ and _d f_, and tack these in position; they are shown by dotted lines in Fig. 4.
From a thin board cut two other strips to cover the spaces _g h_, but leave the placing of these till the work is nearly finished. A board two feet long and about three inches high is also necessary for the lower edge of the front, and should be put on after the other parts are in position, to hide the flame of the foot-lights (consisting of a row of short candles) from the spectator. The two pieces like Fig. 5 are made of pasteboard and are designed to furnish the upper and lower portions of the frame for the pictures. Their position is indicated by dotted lines in Fig. 4. As it is somewhat difficult to arrive at the exact proportions of these irregular pieces, without the actual box before one, it will be easier to leave this to the maker, as it is simply necessary to take a stiff piece of paper and place it in the position desired; then crease the lines so that they shall meet the proper points on the uprights; the lower piece comes up to the top of the shelf, and the upper piece comes down just below the top of the picture. After fitting this paper, it is an easy matter to trace the form on the pasteboard, taking care that all the lines are perfectly straight. The curtain should be next adjusted, and a piece of dark blue or green cambric is best suited for this purpose.