The Child-Voice in Singing

, authorities upon the subject refer only to the lack of growth and development in size of the larynx during the period; but undoubtedly, during these years, there is a constant gaining of firmness and strength, in both the cartilages and their connecting membranes and muscles. None of the books written upon the voice have even mentioned this most important fact. It bears with great significance upon questions relating to the capacities of the child's voice at different ages, and explains that phenomenon called the "movable break," which has puzzled so many in their investigations of the registers of the child's voice. The constant, though of course extremely slow, hardening of the cartilaginous portions of the larynx, and the steady increase in the strength of its muscles and ligaments is not in the least inconsistent with the previously noted fact, that the vocal bands during this time increase to no appreciable extent in length; for, it may be observed, after the change of voice, which of