Fourth: Keeping all the loops in position on both hands, with the left hand grasp tightly all the strings where they cross in the centre of the figure, and pass this collection of strings from left to right between
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the right thumb and index, that is, from the palmar side to the back of the hand, and let them lie on the back of the hand midway between the thumb and index finger (Fig. 17). Then with the left thumb and index take hold of the two loops already on the right thumb, and, without pulling them out, draw them over the tip of the right thumb (Fig. 18). Now, still holding the loops, let the col-
lection of strings lying low down between the right index and thumb, slip over the right thumb to the palmar side. The right thumb is now entirely free. Without untwisting the two original right thumb loops, which you are still holding with the left thumb and index, replace these loops on the right thumb exactly as they were before the collected strings were placed between the right index and thumb (Fig. 19). Separate the hands, and draw the strings tight. Now repeat exactly the same movement on the left hand as follows:
Keeping all the loops in position on both hands, with the right hand grasp tightly all the strings where they cross in the centre of the figure, and pass this collection of strings from right to left between the left index and thumb, that is,
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from the palmar side to the back of the hand, and let them lie on the back of the hand midway between the index and thumb; then with the right thumb and index take hold of the two loops already on the left thumb and, without pulling them out, draw them over the tip of the left thumb. Now, still holding these loops, let the collection of strings lying low down between the left index and thumb, slip over the left thumb to the palmar side. The left thumb is now entirely free.
Without untwisting the two original left thumb loops, which you are still holding with the right thumb and index, replace these loops on the left thumb exactly as they were before the collected strings were placed between the left index and thumb. Separate the hands, and draw the strings tight.
