World's Use and Supply of Sugar 



279 



The purity of sucrose in raw sugar from different sources 

 is given by Abel ^ as follows : 



Table XXI. — Average Percentage Composition of Raw 

 Sugar from Different Sources 



These figures would not be constant under different 

 conditions, but they show average impurities in sugar 

 from different sources before it is refined. 



SUGAR AS A FOOD 



The value of sugar as a food is discussed by Abel ^ as 

 follows : " The main function of sugar as found in the 

 blood, whether resulting from the digestion of sugar or of 

 starch, is believed to be the production of energy for in- 

 ternal and external muscular work, and, as a necessary 

 accompaniment, body heat. This has been amply demon- 

 strated by experiment. By ingenious devices the blood 

 going to and from a muscle of a living animal may be 



> Abel, Mary Hinman, "Sugar and Its Value as Food," U. S. 

 Dept. of Agr., Farmers' Bui. No. 535 (1917), p. 13. 

 * Ibid., pp. 16-18. 



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