[Illustration: CREEPING THROUGH A SMALL SPACE.]
CREEPING THROUGH A SMALL SPACE.--Double the cardboard or leather lengthways down the middle, and then cut first to the right, nearly to the end, and then to the left and so on to the end of the card; then open it and cut down the middle, except the two ends. By opening the card or leather, a person may pass through it. A tough leaf may be treated in this way.
THE CABINET-MAKER'S PROBLEM.--The cabinet-maker must find the centre of the circle, and strike another circle, half the diameter of the first, and having the same centre. Then cut the whole into four parts, by means of two lines drawn at right angles to each other, then cut along the inner circle, and put the pieces together as in the following diagram.
BUTTON PUZZLE.--Pull the narrow slip of the leather through the hole, and the string and buttons may be released.
CROSS CUTTING.--Take a piece of writing paper about three times as long as it is broad, say six inches long and two wide. Fold the upper corner down, as shown in Fig. 1; then fold the other upper corner over the first, and it will appear as in Fig. 2; you next fold the paper in half lengthwise, and it will appear as in Fig. 3. Then the last fold is made lengthwise also, in the middle of the paper, and it will exhibit the form of Fig. 4, which, when cut through with the scissors in the direction of the dotted line, will give all the forms mentioned.
CYLINDER PUZZLE.--Take a round cylinder of the diameter of the circular hole, and of the height of the square hole. Having drawn a straight line across the end, dividing it into two equal parts, cut an equal section from either side to the edge of the circular base, a figure like that represented by the woodcut in the margin would then be produced, which would fulfil the required conditions.
HALFPENCE PUZZLE.--Place the fourth on the first, seventh on the third, fifth upon the ninth, the second upon the sixth, and the eighth upon the tenth.
If your grate be (great B) empty, put coal on. When your grate is (great IS) full, stop putting coal on.
THE MISER'S RUSE.--The counting, which stopped at every seventh man, was made to begin at the sixth from the landlord, who sat at the end of the table.