Mathematical recreations and essays . and the index-fingers pointing upwards. On separatingthe hands the Diamonds will appear. It is a matter of indifference whether thetop string is taken on the middle-fingers or on the index-fingers. If the fourthstep be taken before the third we get a form of Double Diamonds. More briefly thus. Opening A. Let go thumbs. Each thumb under 3 andtakes up one. Each thumb over one and picks up one. Release little-finger over one and picks up one. Release thumbs. Each thumbover 2 and picks up one. Near index strings on tips of thumbs. T to loop
Mathematical recreations and essays . and the index-fingers pointing upwards. On separatingthe hands the Diamonds will appear. It is a matter of indifference whether thetop string is taken on the middle-fingers or on the index-fingers. If the fourthstep be taken before the third we get a form of Double Diamonds. More briefly thus. Opening A. Let go thumbs. Each thumb under 3 andtakes up one. Each thumb over one and picks up one. Release little-finger over one and picks up one. Release thumbs. Each thumbover 2 and picks up one. Near index strings on tips of thumbs. T to loops onthumbs. Index-fingers in triangle. Release little-fingers, and extend. Multiple Diamonds. In the figures above described thediamonds are in a row. I give an instance—see figure ix—de-rived from the Natik natives, where the diamonds are in threerows. The reader will be easily able to introduce modificationsin the process of the formation of Multiple Diamonds which willlead to other figures which he can thus invent for Figure ix. Mvltiple Diamonds, Multiple Diamonds may be formed thus (Jayne, pp. 150 156). First. Take up the string in the form of Opening A. Second. With the teeth draw the farlittle-finger string towards you over all the strings. Then, bending the left 364 STRING FIGURES [CH. XVIII index over the left string of the loop held by the teeth, pick up from belowon the back of the index the right string of the loop, and return. Next bendthe right index over to the left, and pick up from below on its back the leftstring of the loop, and return. Release the loop held by the teeth. the thumbs. Fourth. Put each thumb away from you, under bothindex loops, and pick up on its back the near little-finger string, and Pass each thumb up over the lower near index string, and put itstip from below into the upper index loop. Sixth. Make movement T on thethumb loops. Seventh. Withdraw each index from the loop which passesaround both thumb
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