To Spin a Cent Upon a Needle Point.
Bend a hair-pin as shown in our illustration. Place a cent horizontally on the right-hand hook, which should be narrow enough to clip it closely, and hang upon the left-hand hook a tolerably heavy finger-ring (or two, if one is found insufficient). Place the free edge of the coin on some upright point (that of a lady’s bonnet-pin, for example), and you will find that the combination can be made to balance itself. Furthermore, by gently blowing upon the ring, you can set the apparatus revolving rapidly, without any disturbance to its equilibrium.
If you spin the cent upon a very sharp steel needle, you will find that the needle will at length work its way completely through the coin. You may therefore, if you please, propound your puzzle in this rather striking form—How to bore a hole through a cent by merely blowing upon it.