History shows that it is difficult to develop equitably the mental and physical nature of human beings, and that periods noted for great bodily vigor are often deficient in corresponding mental growth. Even now, with added wisdom as to their co-relation, and the best intentions, undue stress is too often laid on one or the other. So in the recent past the mental condition of the child has received the bulk of the attention of educators and it has remained for the past decade to bring into prominence the fact that mental health and activity is not an independent entity, but is inextricably connected with the physical condition. To-day physical examinations are instituted in nearly all our colleges, in most of our preparatory schools and in many advanced private as well as public schools.
Perhaps no physical function lends itself more to mental activity than acute hearing. Whether in the