Get a match and make a notch in the middle of it, bend it so as to
form an acute angle, and place it over the mouth of a bottle.
Now place a dime or other small coin on the match and ask any one to
get the coin into the bottle without touching either the bottle or the
match.
This is very easy to do. Dip your finger in a glass of water, hold it
over the place where the match is notched, and let one or two drops
fall on this point. The force of the water will cause the sides of the
angle to move apart, and the opening thus become large enough to let
the coin fall into the bottle.
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