The control of the voice, so far as it can be a conscious physical operation, is determined chiefly by the action of the breathing muscles about the waist and the lower part of the chest. The voice may be said to have its foundation in this part of the physical man. This foundation, or center of control, will be rightly established, not by any very positive physical action; not by a decided raising of the chest; not by any such marked expansion or contraction as to bring physical discomfort or rigid muscular conditions. When the breath is taken in, by an easy, natural expansion, much as air is taken into a bellows, there is, to a certain degree, a firming of the breathing muscles; but this muscular tension is felt by the speaker or singer, if felt at all, simply as a comfortable fullness around, and slightly above, the waistline, probably more in front than elsewhere. An eminent teacher of singing tells his pupils to draw the breath into the stomach. That probably suggests the sensation. When the breath has been taken in, it is to be gently withheld,--not given up too freely,--and the tone is formed on the top, so to speak, of this body of breath, chiefly, of course, in the mouth and head. For the stronger and larger voice the breath is not driven out and dissipated, but the tone is intensified and given completer resonance within--within the nasal or head cavities, somewhat within the pharynx and chest. This body of breath, easily held in good control, by the lower breathing muscles, forms what is called the vocal "support." It is a fixed base of control. It is a fundamental condition, and is to be steadily maintained in all the varied operations of the voice.