FIG. 57
TUBE FOR TRICK
SQUIRT BOTTLE
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water, and blow through the elbow. Do you get a fine long stream
from the nozzle (Fig. 56)?
Experiment 42. To make a trick squirt bottle.
You can have any amount of fun with a trick
squirt bottle. It is exactly the same as the squirt bottle described
in Experiment 41 except that it has a hole just
below the bend (Fig. 57).
To make the hole, make the long bent nozzle
as in the last experiment, then heat the tube just below the bend in
the blowpipe flame, touch a piece of glass tube to the red hot glass
FIG. 58
MAKING A SMALL HOLE
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(1, Fig. 58), and pull it away (2, Fig. 58). Do you find that the
hot glass is pulled out into a thin pointed tube? Break off the
thin tube close to the large tube, heat in the blowpipe flame until
FIG. 59
TRICK SQUIRT BOTTLE
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the edges are smooth and at the same level as the sides of the large
tube. Flare the edges of the hole, if necessary; it should be about
1/8 inch in diameter.
Now fill the bottle with water, and blow
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