When the arm and leg movements are to be done together, the pupil has to concentrate his mind on the four movements. To start, one must have the legs straight behind, keeping them motionless till the pupil gets to fourth movement of the arm stroke, when the arms and legs should be the same as in Fig. 14. On the first and the second movements, which form a continuous movement for the legs, shoot the arms straight out and hold them there until the straightened out legs come together, as in Fig. 15. Then the legs should be kept rigid, while the hands are turned and the arms brought around in a straight line with the shoulders, as in Fig. 16. Finish the stroke by drawing the legs up and the hands in to the starting position, as in Fig. 14. These combined movements will be difficult at first, as the movements do not go together, as in the back stroke.
When the rhythm begins to assert itself, the best way to practise is with the head under water. Then the pupil can think of his arm and leg movements without the bother and exertion of holding his head above water.
CHANGING FROM BACK TO BREAST STROKE
The change from back to breast or vice versa is simple if done slowly. Let us assume the pupil while swimming is using the breast stroke and wishes to turn over. When in position as in Fig. 15, the pupil should roll over on the left side, lifting the right arm out of the water; he will then be in the second back stroke position, ready to continue.
To turn from the back to the breast the movement is a little quicker, to prevent the legs sinking too low. From position on the back as in Fig. 5, roll over on the right side, lifting the left arm out of the water so that the hands meet straight in front. Then quickly snap the legs straight together and bring the arms around in line with the shoulders and resume your regular breast stroke.
These turns should be practised by rolling on either side. The pupil may also bend forward when on the back, as in standing up, and continue with the breast stroke.
LOUIS C. DALTON