CHAPTER XV.
BOARD FOR STRETCHING THE MUSCLES, ESPECIALLY
THOSE OF THE THUMB AND THE LITTLE FINGER.
Take a board, about 22 inches long, four to five inches wide, and three quarters of an inch thick, and mark out on it four or five grooves, about half an inch deep. To fix this board on the table, have a little ledge glued on to one of its sides, as in Fig. 36 and 37.
Place the outstretched hand on the board; stretch the thumb and the little finger as far as possible away from one another, into one of the grooves, place the other fingers into one of the other grooves, and set them in motion, while holding the thumb and little finger firmly in their places.