The Next Three Stories;

divide them with lines like [Figs. 316], [317], [318], [319], [320], and cut them like [Figs. 322], [323], [324]. The centres of these must each be smaller than the last, measuring respectively four, three and two inches square, but the depth of the sides remains the same. The size of your second-story paper will be ten by seven inches, the third, nine by six inches, and the fourth, having the bottom flaps, measure one instead of one and a half inches, as do the others, requires paper seven by five inches. [Figs. 321], [322], [323], [324] are given to show the relative sizes of the four stories when the paper is cut and laid out flat; the diagrams are also intended to explain the cutting of the slits on the centre squares. Notice that in the first story ([Fig. 321]), as in the additional three stories, neither of the ends of the left-hand slit reaches to the edge of the square, while the right-hand slit (H H, [Fig. 321]) touches at one edge. In the second story ([Fig. 322]) the right-hand slit not only runs to the edge of the square, but there turns at right angles and extends through the edge of the paper (G G). The right-hand slit of the third story ([Fig. 323]) differs from the other two; it runs within a short distance of the edge of the square, where it turns at right angles, making a straight line to the adjoining side of the square, there turning again at a sharp angle; the slit reaches entirely through the edge of the paper H, H ([Fig. 323]). In the fourth story ([Fig. 324]) the slits are cut like those in the first story I, I ([Fig. 324]), being the long slit. [Fig. 325] gives the diagram for the fifth story, which is the top one.

Fig. 325.—Fifth story of Pharos of Alexandria.

Fig. 326—The pitch-wood fire.

This Room

has large openings in the four sides to allow the beacon-light to shine out into the dark night. The centre of the diagram ([Fig. 325]) is one inch square; two of the sides have slits cut near each side edge of the windows; on the other sides of the squares are extending flaps. Cut all the heavy lines, and bend inward and crease all the dotted lines, then put the top story together in proper form by sliding the four side edge flaps through the slits, which will bring the edges of the sides together, forming the four corners of the room. Bend back and crease down the portion of the flaps which extend inside of the room; do this to make the fastenings secure. Use strips of bright-red and orange-colored tissue paper cut into fringe on one edge and twisted together into a bunch, as in [Fig. 326], for the