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Fig. 22.

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Fig. 23.

A SHEEP PEN

Arrange eight matches as shown in Fig. 24, and state that this
enclosure, formed by eight hurdles, is supposed to hold one hundred
sheep. Ask your friends how many more hurdles would be required to
enable the enclosure to contain two hundred sheep? The reply is
generally eight more, and your friends will be surprised to learn that
only two more hurdles are required--one at each end across the
enclosure. Three hurdles being moved to admit of the introduction of the
additional two, the pen will, of course, be doubled in size.

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Fig. 24.

POST AND RAIL PUZZLE

Put the following question to the company: Supposing there was a tunnel
through a hill and a post and rail fence was constructed through it, and
another fence was made exactly above it, over the hill, how many more
posts would be required for the latter route, supposing they were the
same distance apart by both routes?

After several calculations have been made you can astonish the company
by telling them that exactly the same number of posts would be required
for both routes, which you can prove by making a rough sketch of the
diagram, Fig. 25, and placing matches on it to represent the posts.

[Illustration]
Fig. 25.

SIMPLE MISCELLANEOUS TRICKS

A GOOD AFTER-DINNER TRICK

Procure an egg, an apple, an orange, and two dozen nuts. Place the
latter on a plate, and request three persons during your absence from
the room to each pocket one of the three former, asserting that you will
eventually state in whose pockets the different articles are to be
found. On returning to the room present to one of the p