414 Answers531. THE KEYS AND RING
First cut out the keys and ring in
one piece, as here shown. Now cut
only half through the cardboard along
the eight little dark lines, and similarly
cut half through on the eight little
dotted lines on the other side of the
cardboard Then insert a penknife and
split the card below the four little
squares formed by these lines, and
the three pieces will come apart with
the keys loose on the ring and no join.
- THE ENTANGLED SCISSORS
Slacken the string throughout so as to bring the scissors J.U~ar the hand of
the person holding the ends. Then work the loop, which is shown at the bot-
tom of the figure, backwards along the double cord. You must be careful to
make the loop follow the double cord on its course, in and out, until the loop
is free of the scissors. Then pass the loop right round the points of the scis-
sors and follow the double cord backwards. The string will then, if you have
been very careful, detach itself from the scissors. But it is important to avoid
twists and tangles, or you will get it in a hopeless muddle. But with a little
practice it may be easily done.
- INTELLIGENCE TESTS
What is wrong with the dream story is the obvious fact that, as the dreamer
never awoke from his dream, it is impossible that anything could be known
about it. The story must, therefore, be a pure invention.
The answer to the second question is: By immersing them in water and cal-
culating from the rise of the water in the vessel.534. AT THE MOUNTAIN TOP
The surface of water, or other liquid, is always spherical, and the greater
any sphere is the less is its convexity. The spherical surface of the water must,