Make a stand with a box upon it, having the roof and front of an ancient
temple, the front of the stand being in steps leading up to the porch.
This conceals a simple apparatus of glass tubes, receivers and siphons.
[Illustration: Fig. 104.]
The four tubes are shown just above and below the bends, so as to appear
to be solid glass pillars. The water from the upper reservoir fills them
in running to find its level in the other container. Little figures are
made of wax and pith, two having cork in their heads, two leaden feet,
and they are placed in the tubes alternately. A valve below prevents
them sinking, and a fine hair prevents them rising into the bends. On
the water being let flow, the figures are imbued with motion, and their
rising and falling will greatly puzzle the spectators, for the fluid is
not seen to run.
[Illustration: Fig. 105.]