6 ART. 1. — Y. OSAKA : 



The optical rotation of the sugar solution, not inverted, 

 corresponding to the mean dilute solution was : 



(9) 15.126°, (10) 15.138°; mean: 15.132.° 



Thus the degree of the inversion in the original solution in 

 percentage is as follows : 



15.132+4.926^ ^^^.^y^^^ 



15.132 + 4.998 



IV. Ô0 grams of cane sugar in 100 c,c. 

 of the solution* 



25 ce. of the solution weighed : 



{a) 30.016, {b) 30.020; mean: 30.018. 



Solution taken out Kotation of tlie Rotation calculated for 

 in grams. solution diluted the mean dilute 



to 25 c.c. solution. 



Inverted in the original solution. 



((1) 5.8721 -4.140° -4.142° 



{a) I 



«I 



(2) 5.8818 -4.140° -4.136° 



(3) 5.8721 -4.132° -4.135° 



(4) 5.8674 -4.141° -4.147° 





Mean : -4.176^ 



