A TRIPLE BRIDGE.
This may be constructed by means of three table-knives, in the manner illustrated in the figure. Three goblets or tumblers will serve as the piers; these are to be arranged in a triangle, a little farther from each other than the length of the knives. Lay two of the knives on the table, with the blades crossing each other. Then pass the blade of the third knife over the uppermost blade of the other two, and under the undermost; then take them up and place them with the ends of the handles on the rims of the glasses. The bridge now sustains itself, and if a moderate weight be placed upon it, it will be all the firmer.
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