From Soil to Sack 



shortened; and that when we pass 

 light through glass at an angle its 

 direction is changed. 



Similarly, sugar in solution has 

 the property of bending the rays of 

 light which it refracts; different 

 sugars have different refractive prop- 

 erties; and in actual practice sugar, 

 instead of being tasted or analyzed, 

 is examined by an instrument called 

 the polariscope, designed to measure 

 the character of this refraction. 



Fruit sugar bends the ray of light 

 to the left. Its technical name is 

 Levulose, and is, in fact, called a left- 

 hand sugar; cane sugar (sucrose), 

 and grape sugar (dextrose), bend the 

 ray of light to the right, and are 

 known as right-hand sugars. 



The polariscope readings of some 

 different commercial sugars are: 

 Black Strap 71, Cuban Molasses 

 Sugar 77, Cuban 1st Sugar 96, 

 and Java White Sugar 99.6. 

 [33] 



