can blow out your breath between these folds of skin in your voice box. Blow it out in one way, and what happens? You are singing. Blow it out in another way, and you are talking; in still another way, and you are just making a noise--perhaps mewing like a kitten, or neighing like a horse. If you pull these folds of skin close together, you can close your windpipe and "hold your breath." A cough is made by filling your chest with air, holding the folds close shut, and then suddenly "letting go." How many sounds you can make from one tiny music box! Of course the muscles of the mouth and throat, and the teeth and the tongue all help the voice box as much as they can. One of the best ways to keep your voice clear and st