Experiment 191. “A very good illustration of the action of the vocal bands in the production of the voice may be given by means of a piece of bamboo or any hollow wooden tube, and a strip of rubber, about an inch or an inch and a half wide, cut from the pure sheet rubber used by dentists.
“One end of the tube is to be cut sloping in two directions, and the strip of sheet rubber is then to be wrapped round the tube, so as to leave a narrow slit terminating at the upper corners of the tube.
“By blowing into the other end of the tube the edges of the rubber bands will be set in vibration, and by touching the vibrating membrane at different points so as to check its movements it may be shown that the pitch of the note emitted depends upon the length and breadth of the vibrating portion of the vocal bands.”[[51]]—Dr. H. P. Bowditch.
Note. The limitations of a text-book on physiology for schools do not permit so full a description of the voice as the subject deserves. For additional details, the student is referred to Cohen’s The Throat and the Voice, a volume in the “American Health Primer Series.” Price 40 cents.
Chapter XIII.
Accidents and Emergencies.
358. Prompt Aid to the Injured. A large proportion of the accidents, emergencies, and sudden sicknesses that happen do not call for medical or surgical attention. For those that do require the services of a physician or surgeon, much can be often done before the arrival of professional help. Many a life has been saved and much suffering and anxiety prevented by the prompt and efficient help of some person with a cool head, a steady hand, and a practical knowledge of what to do first. Many of us can recall with mingled admiration and gratitude the prompt services rendered our families by some neighbor or friend in the presence of an emergency or sudden illness.
In fact, what we have studied in the preceding chapters becomes tenfold more interesting, instructive, and of value to us, if we are able to supplement such study with its practical application to the treatment of the more common and less serious accidents and emergencies.
While no book can teach one to have presence of mind, a cool head, or to restrain a more or less excitable temperament in the midst of sudden danger, yet assuredly with proper knowledge for a foundation, a certain self-confidence may be acquired which will do much to prevent hasty action, and to maintain a useful amount of self-control.
Space allows us to describe briefly in this chapter only a few of the simplest helps in the more common accidents and emergencies which are met with in everyday life.[[52]]
359. Hints as to what to Do First. Retain so far as possible your presence of mind, or, in other words, keep cool. This is an all-important direction. Act promptly and quietly, but not with haste. Whatever you do, do in earnest; and never act in a half-hearted manner in the presence of danger. Of course, a knowledge of what to-do and how to do it will contribute much towards that self-control and confidence that command success. Be sure and send for a doctor at once if the emergency calls for skilled service. All that is expected of you under such circumstances is to tide over matters until the doctor comes.
