OEGANS OF THE VOICE DIAGRAM 2 25 



windpipe ; and it communicates with the throat by a narrow 

 opening. It is composed of several pieces jointed together, and 

 the interior is covered with a very fine skin, and furnished with 

 two folds called vocal chords. These folds produce the sound, or 

 voice, by being more or less tightened. The sound thus formed 

 is articulated by the tongue with the assistance of the palate, 

 teeth, and lips ; and then constitutes speech. 



