The children of many uncivilized nations, especially in warm climates, frequent the water from an early age, and seem almost to swim by instinct. The remarkable powers of endurance, agility, and strength manifested while in the water by many individuals of savage tribes are well known,—powers which often enable them to come off victorious in struggles with some of the fiercest inhabitants of those rivers and coasts.
The art of swimming is by no means difficult of attainment, and several authors have supplied directions to facilitate its acquisition. Above all things, self-confidence (not rashness leading into danger) is required; and, when this is possessed, all difficulty soon ceases. Dr. Franklin, himself an expert swimmer, recommends that at first a familiarity with the buoyant power of water should be gained; and to acquire this, he directs the learner, after advancing into the water breast high, to turn round, so as to bring his face to the shore: he is then to let an egg fall in the water, which, being white, will be seen at the bottom. His object must now be, by diving down with his eyes open, to reach and bring up the egg. He will easily perceive that there is no danger in this experiment, as the water gets shallower, of course, towards the shore, and because whenever he likes, by depressing his feet, he can raise his head again above water.
The thing that will most strike beginners will be the great difficulty they experience in forcing themselves through the water to reach the egg, in consequence of the great resistance the water itself offers to their progress: and this is indeed the practical lesson derivable from the experiment; for the learner becomes aware of the very great sustaining or supporting power of water, and hence has confidence. This sustaining power of water is shown under many circumstances: thus, a stone which on land requires two men to remove it, might in water be easily carried by one. A man might walk without harm on broken glass in deep water, because his weight is supported by the water. This knowledge of fluid support constitutes the groundwork of all efforts in swimming, or in self-preservation from drowning.
Should a person accidentally fall into the water, provided he retained his presence of mind, a knowledge of the above facts would save him probably from a “watery grave.” The body being but very slightly heavier than the volume of water it displaces, will, with a very slight motion of the hands under water, float. When the chest is thoroughly inflated with air, it is lighter than water, and floats naturally, having half the head above water; so that the person exposed to danger has only to turn upon his back, in order that that half, consisting of his face, with the mouth and nostrils, be above the water line.
But to float thus upon the water, the greatest care must be taken not to elevate the arms or other parts above its surface; and it is in remembering this caution, that presence of mind in the time of dangers confers so much benefit; for, in the moment of terror, a person thrown into the water almost instinctively stretches out his hands aloft to grasp at some object, thereby depriving himself of a means of proceeding which would frequently keep him afloat until succour arrived. By elevating any part of the body in this way, we remove it from the support afforded by the water, and thus render sinking inevitable.
Dr. Arnot, in allusion to this subject, says that many persons are drowned who might be saved, for the following reasons:—
1. From their believing that their constant exertions are necessary to preserve the body from sinking, and their hence assuming the position of a swimmer, with the face downwards, in which the whole head must be kept out of the water, in order to enable them to breathe; whereas, when lying on the back, only the face need be above the water.
2. From the groundless fear that water entering by the ears may drown as if it entered by the mouth or nose, and their employing exertions to prevent this.
3. The keeping of the hands above water, already alluded to.
4. Neglecting to take the opportunity of the intervals of the waves passing over the head, to renew the air in their chest by an inspiration.