With three pieces of cardboard of the shape and size of [No. 1], and one each of [No. 2] and [3], to form a cross.
13. THE FOUNTAIN PUZZLE.
A is a wall, B C D three houses, and E F G three fountains or canals It is required to bring the water from E to D, from G to B, and from F to C, without one crossing the other, or passing outside of the wall A.
14. THE CABINET-MAKER’S PUZZLE.
A cabinet-maker had a circular piece of veneering, with which he has to veneer the tops of two oval stools; but it so happens that the area of the stools, exclusive of the hand-holes in the centre, and the circular piece, are the same, (as that of the circle.) How must he cut his stuff so as to be exactly sufficient for his purpose?
15. THE STRING AND BALLS PUZZLE.
Get an oblong strip of wood or ivory, and bore three holes in it, as shown in the [cut]. Then take a piece of twine, passing the two ends through the holes at the extremities, fastening them with a knot, and thread upon it two beads or rings, as depicted above. The puzzle is to get both beads on the same side, without removing the string from the holes, or untying the knots.