ON THE INVEKSION OF CANE SCGAE. 5 



The optical rotation of the sugar solution, not inverted, 

 corresponding to the mean dilute solution was : 



(9) 17.592^ (10) 17.572°; mean: 17.582° 



Thus the degree of the inversion in tlie original solution in 

 percentage is as follows : 



17.582 + 5.653 _ 



17.582 + 5.769 ^-^^^"^^-^^ 



III. 60 grams of cane sugar in 100 c,c, 

 of the solution, 



25 c.c. of the solution weighed : 



(a) 30.967, {b) 30.963; mean: 30.965. 



Solution taken out Rotation of the Eolation calculated for 



