Mathematical recreations and essays . own) while hands are rotated. A Butterfly. As yet another of figures of this kind I willgive the formation of that known as a Butterfly—see figure is also derived from the North American Red Indians. The Butterfly is produced as follows (Jayne, pp. 219—221). Begin with theNavaho Opening, that is, make the first movements as when forming Twist each index loop by rotating each index down toward you and upagain. In all make (say) three or four such twists on each index loop. the right thumb from below into the right index lo
Mathematical recreations and essays . own) while hands are rotated. A Butterfly. As yet another of figures of this kind I willgive the formation of that known as a Butterfly—see figure is also derived from the North American Red Indians. The Butterfly is produced as follows (Jayne, pp. 219—221). Begin with theNavaho Opening, that is, make the first movements as when forming Twist each index loop by rotating each index down toward you and upagain. In all make (say) three or four such twists on each index loop. the right thumb from below into the right index loop, and, without removing CH. XVIIl] STRING FIGURES 371 the index, eepwate the thumb from the index. Make movement T on the thumbloops. Repeat the movement with the other hand. Fourth. Bring the handsclose together with the index and thumb of the one hand pointing toward theindex and thumb of the other hand; then hang the right index loop p on the tipof the left index, and the right thumb loop d on the tip of the left thumb. Thus. Figure xiv. A Butterfly,on the left index there are two loops, a and /3; on the left thumb there are twoloops, 7 and 5; and the right hand is free. Fifth. Put the tips of the rightindex and thumb against the left thumb knuckle. Take up with the right indexfrom the proximal side the loop 5 and take up with the right thumb from thedistal side the loop y. With the right thumb and index grasp the loops a and/3 where they lie on the top of the left index. Remove the left hand. Then,holding the right hand up, from the left, put the left index into the loop jS,and the left thumb into the loop a. Finally. Placing the hands withthe thumbs up and the fingers pointing away from you, draw the hands slowlyapart, and when the strings have partially rolled up in the middle of the figurepull down with the middle, the ring, and the little-fingers of each hand the farindex string and the near thumb string. The butterfly will now appear; itswings being held up by th
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