Experiment 24. To make an air gun.
Take a full length piece of No. 4 tube and flare both ends slightly. This is the air gun (Fig. 37).
Now to make an arrow, cut off the lighting end of a match and insert a pin in the other end (Fig. 38).
FIG. 38
THE ARROW IS SHOT PIN-END FIRST
Insert this arrow in the air gun and blow it out. Does it come out with considerable speed?