Experiment 52. Fun with the diablo whistle.

Start with the air column long and blow the note, shorten it a little and blow the next note, continue, and try to blow the eight notes of an octave.

FIG. 72
JOINING TWO TUBES

Try to play a tune.

Try to make the most weird sound you can.

Experiment 53. To join two tubes end to end.

Take a piece of No. 2 tube about 7 inches long, close one end, smooth the other, and when cool cut the tube at the middle.

FIG. 73
WORKING THE JOINT