[Illustration]
This is a rather more elaborate experiment and one of the most effective
of the whole series. The requirements are: a plate, the basting-ladle
used in previous experiments, and, in addition, a "skimmer." The handle
of the ladle is hooked over the edge of the plate and made secure by a
wedge cut from a bottle cork. The opposite edge of the plate is then
rested upon the edge of a bottle in the position shown in Fig. 18, and
the handle of the skimmer is finally hooked into the bowl of the ladle,
making the structure shown.