Cut a piece of cardboard into the form of, and of equal proportions to,
the figure given here, after which, produce, with the same, three
successive pyramidal or angular boxes, alternately bearing the
respective numbers of 7, 6, and 5 corners, still keeping the cardboard
in one piece. After cutting the card half through at the dotted lines,
so that it will bend more squarely, bring the ends of 1—2 and 3—4
together; bend the whole in the middle at 5—6: fold 1—2 and 3—4 over one
another, and the six-cornered box is formed. By again placing the
angular sections inwards, the box will be finished. If larger, gum the
parts as you fold them, and a curious box will be the result; if covered
with Dutch metal so as to conceal all the seams, it may be a puzzle-box
indeed.
[Illustration: Fig. 99.]
[Illustration]