PHYSICAL Ai?D LITER ARY. 533 



B. The two wheels, over which the 

 ends of the thread pafs, after the fecond 

 Xioofe is made. 



CC. The under part of the cafe, open 

 as at the top, where the extremities of 

 the thread are brought out, and where 

 they are taken hold of, 



D, A fmall hole through both fides of 

 the cafe, for faltening a piece of fponge 

 to prevent the inftrument from hurt- 

 ing the throat. 



E. The handle ten inches long, bended 

 like the other one. 



Fig. 3, The waxed thread. 

 A. The noofe exad:ly adapted to the fizc 

 of the groove in the ring Fig. i. 



BB. I he extremities, or crofs ends of 

 tlie thread. 



Art. 



