So slight will be the difference that the pupil will hardly notice it. As long as the back is well hollowed, the upper part of the body will float, but directly the body is doubled up the head and feet begin to sink, so that the teacher must follow close after the pupil to make the pupil keep the back well hollowed and the chest expanded. Beginners will be surprized at the ease with which back strokes propel the body through the water without any undue effort. To one who has never been used to swimming without support it gives a wonderful feeling of exhilaration to propel one's self through the water and then, when tired, to slowly bring the arms back under water until the thumbs come together behind the head and the knees are drawn up to the floating position, while the pupil inhales deep breaths through the mouth, thereby sustaining the body well up in the water.
THE BREAST STROKE
FIGURE 9
The breast stroke has been handed down from an early Roman period. It is the oldest of all strokes, but it is the hardest to learn properly, as the head has to be supported clear of the water. Any part of the body when held above water is dead weight, and as the head is all bone, muscle and brains, it is the heaviest part. This is why, in using the breast stroke, it is much harder to keep the mouth and nostrils above water. The breast stroke is so universally identified with swimming that every beginner wants to learn it. It is only on this account that I teach the breast stroke.
FIGURE 10