Experiment 40. To siphon sand or mud.
Arrange a siphon (Fig. 54),
start the water flowing, and then pour sand or mud into the upper tumbler.
Is the sand or mud siphoned over into the lower tumbler?
Attach a long tube to the outer arm of the
FIG. 55
A SQUIRT BOTTLE
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siphon and repeat the experiment. Is the sand or mud siphoned more
rapidly and more thoroughly?
Experiment 41. To make a squirt bottle.
Make a nozzle at one end of a piece of No. 2
tubing, make a bend near the nozzle, cut off the other end at such a
length that it will reach to within ¼
FIG. 56
SQUIRT BOTTLE IN ACTION
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inch of the bottom of
the bottle, smooth this end, allow it to cool, wet the tube and the
two-hole stopper, insert an elbow in the other hole, and your squirt
bottle is complete (Fig. 55).
Fill the bottle with
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