20 



100 



90 



BO 



70 



UJ 

 50 





30 



20 



10 



W64 6 3 /.47O 2468 1,480 2 -f <S 

 INDEX OF REFRflCTION-ISC. 



FIG. 10. Percentage weight-index of refraction curve for a crude steam-distillation turpentine. 

 [Cir. 152] 



