propounded the theory
that matter may consist of vortex rings in a fluid that fills all space,
and by a development of the hypothesis he was able to explain chemical
combination.
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[Illustration]
164.--THE POTATO PUZZLE.
Take a circular slice of potato, place it on the table, and see into how
large a number of pieces you can divide it with six cuts of a knife. Of
course you must not readjust the pieces or pile them after a cut. What
is the greatest number of pieces you can make?
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The illustration shows how to make sixteen pieces. This can, of course,
be easily beaten.
165.--THE SEVEN PIGS.
[Illustration]
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