Do this six times, allowing the little finger to move freely.
Now repeat the exercise, only instead of allowing the little finger to move freely, try to hold it rigid and immovable. Of course the muscles of the little finger will be unable to stand the greater strength of your right hand, and it is intended that the finger should move, but in each case it should move against the resistance of the finger muscles. Repeat this exercise against resistance fourteen times.
Go through this entire process with each of the other fingers and the thumb of the left hand. Then take up the exercise with each of the fingers of the right hand, moving them with your left.
EXERCISE 4.
Lay the left hand flat palm down on a table, book, or other smooth surface. Open the thumb out of the way of the fingers.
Grasp the index finger of the left hand with the thumb and finger of the right hand. Allowing the finger to move freely, draw it along the surface as far as possible without straining the muscles. Do this five times. Now with the finger muscles resist the movement, and repeat the exercise five times more.
Allowing the finger to move freely once more, lift it from the table in a large semi-circle, and swing it over towards the thumb and down to the table again. Repeat five times.
Go through this same movement five times with muscle resistance.
Carry out these exercises on the other fingers of the left hand, and then on all of the fingers of the right hand.