Phil.Ma<5.S.5.Vol.33.H.IV 



Kg. 2. 



TtigTrib aiul Left EoaidzcL 

 Spirals vrv ParnllcJ . 

 Opposing one another. 



Fig. 4. 



Two Bight Handed Spirals 

 irvVocralleL, Assisting one 

 aswilijer. 



Fig. 5 



Two TUghb Hajuled; Spools 

 UK* Par'alleL , Opposing one 

 aju)t}uer. 



Mintern. Bros. lith. . 



