Chapter III Breathing Considered Theoretically and Practically
Breathing the great essential—Misconceptions—Purpose of breathing as a vital process—The respiratory organs—Their nature—Relations of the lungs to the chest-wall—Expansion of the chest—Its diameters—The muscles of respiration—Personal observation—The diaphragm—Varying quantities of air breathed—Breathing when properly carried out by the singer or speaker is healthful 44